Climate and monthly weather forecastPendleton, OR
Climate and monthly weather forecast
The climate of Pendleton
Situated in Oregon, USA, Pendleton experiences a Mediterranean type of climate, generally referred to as Csa in the Köppen climate classification system. This indicates that the area typically deals with hot summers accompanied by mild winters. An inspection of the given climatological data provides a more detailed understanding of its weather pattern throughout the year.The temperatures show a significant variation from January to December in Pendleton. The highs begin at 39.7°F (4.3°C) in January and steadily increase, topping at 84.4°F (29.1°C) in July and 84°F (28.9°C) in August before dropping back to the winter averages. In the same way, the lows range from about 28.6°F (-1.9°C) in January to a peak of 61.7°F (16.5°C) in August.
Humidity values present a similar pattern, starting at a relative humidity of 79% in January and decreasing to as low as 39% in July. The precipitation data indicates the city receives rainfall almost all year round, with the exception of July and August, where the rainfall drops to 0.24in and 0.31in respectively.
Interestingly, snowfall is only noticeable from December to February, peaking at 3.62in in February. In terms of daylight hours, Pendleton sees an increase from 9.2 hours in January up to 15.7 hours in June before it starts to reduce.
The best time to visit Pendleton
Those planning to visit Pendleton in Oregon might prefer the summer months from June to August when the temperatures are highest, ranging from 66.7°F (19.3°C) to 84.4°F (29.1°C). These months not only present the warmest weather but also the longest daylight hours, reaching a peak of 15.7 hours in June, allowing more time to explore the town.Moreover, the summer months are the driest months with July having the lowest average rainfall at 0.24in. This combination of warm temperatures and minimal rainfall generally promotes outdoor activities. Plus, with a UV index of 7 in July, there is a higher requirement for sun protection - ensuring your safety while you enjoy the sunny weather.
The worst time to visit Pendleton
Considering the climatological data, the worst time to visit Pendleton would probably be in the winter, specifically January and February. The lowest temperatures are recorded in these months with the average high and low temperatures reaching 39.7°F (4.3°C) and 28.6°F (-1.9°C) respectively in January and 42.6°F (5.9°C) and 30.6°F (-0.8°C) in February.Additionally, these months mark the presence of snow with February recording the highest snowfall at 3.62in. The winter months possess shorter daylight hours, dropping to a low of 8.8 hours in December. The colder weather conditions accompanied by limited sunlight may prove challenging for outdoor exploration.
Spring weather in Pendleton
From March to May, Pendleton witnesses warmer temperatures as spring sets in. Average highs soar from 50.4°F (10.2°C) in March, through 57.6°F (14.2°C) in April, to a comfortable 66.7°F (19.3°C) by May. The lows too see an upward trend, increasing from 35.8°F (2.1°C) in March to 46.6°F (8.1°C) by the end of May.The city's average rainfall declines marginally during these months, indicating fewer wet days. In this period, March witnesses the most rain with 1.65in, dropping to 1.18in in April, and down to 1.26in in May.
Summer weather in Pendleton
Summers in Pendleton are characterized by high temperatures, minimal rainfall, and long daylight hours. From June to August, the temperatures rise to their peak, the highest being 84.4°F (29.1°C) in July. Correspondingly, the city sees its lowest rainfall in July, with only 0.24in. The daylight hours reach a staggering 15.7 hours in June, ensuring longer hours to enjoy the sunny weather.Autumn weather in Pendleton
The Autumn months from September to November in Pendleton come with a gradual decrease in temperatures and an increase in rainfall. The highs drop from 74.1°F (23.4°C) in September to 47.3°F (8.5°C) in November, while the lows see a similar trend, dropping from 54.7°F (12.6°C) to 34.9°F (1.6°C). The city's rainfall quantity rises from 0.51in in September, through 1.18in in October, to 1.14in by November.Winter weather in Pendleton
Winter in Pendleton proves to be the coldest season, marked by low temperatures, snowfall, increased rainfall, and short daylight hours. The highest temperature drops to 37.9°F (3.3°C) in December, while the lowest sinks to 27.3°F (-2.6°C). The city also experiences an uptick in rainfall during this season, with December recording the highest rainfall at 1.57in. More noteworthy is the presence of snow, with December seeing 2.05in of snowfall. To cap it off, sunlight hours are on the lower side, registering just 8.8 hours in December.Weather in January
We begin the year in Pendleton, Oregon, with winter in full swing and a continuation of the colder climate. January has the second-lowest temperatures of the year, predominantly holding between 28.6°F (-1.9°C) and 39.7°F (4.3°C). Weather in January »Weather in February
Moving into February, Pendleton experiences a minor rise in temperature, which indicates the slow approach of spring. With average high temperature increasing, it still does not feel much different from January. The average number of rainfall days drops slightly. Weather in February »Weather in March
Spring announces its arrival in Pendleton in March, with temperatures continuing their upward trend as winter fades. The lengthening days offer more opportunities for outdoor activities. March also sees the most rainfall days of the year at 17.1. Weather in March »Weather in April
By April, the weather in Pendleton continues to tilt favorably towards spring. The temperature rise continues, becoming significantly warmer than preceding months. However, the 1.18" (30mm) average rainfall coupled with a reduced number of rainfall days compared to March indicates drier conditions. Weather in April »Weather in May
May invites warmer temperatures as Pendleton transitions further into spring. A noticeable improvement in daylight hours allows residents and visitors to partake in more daytime activities. This month's weather also greets us with less cloud cover and increased sunshine hours compared to April. Weather in May »Weather in June
June marks the start of summer in Pendleton, with temperatures spiking. Sunshine hours reach their peak, aiding outdoor enthusiasts in their activities. However, the whopping average UV index of 6 calls for ample sun protection. The cityscape also changes as gardens and open spaces bask in the glory of summer. Weather in June »Weather in July
Pendleton witnesses the hottest month of the year in July, with the mercury soaring to an average high of 84.4°F (29.1°C). With the lowest relative humidity, at 39%, and the least amount of rainfall at 0.24" (6mm), July's weather conditions are the driest. Weather in July »Weather in August
In August, there's a slight respite from July's peak summer heat in Pendleton, albeit temps remain high. While the daylight hours reduce, it's imperceptible and the town continues to enjoy long days. Outdoor activities continue unabated, with occasional wind gusts adding to the charm of the warm weather. Weather in August »Weather in September
September's weather showcases cooling temperatures as Pendleton transitions slowly towards autumn. With a noticeable reduction in daylight and similar decrease in sunshine hours compared to August, September marks the soft closure of the summer season. Weather in September »Weather in October
As we move into October, Pendleton experiences further drop in temperatures with autumn getting into full swing. Weather conditions transform considerably, particularly in the number of rainfall days from September's 7 to October's 12.3. Weather in October »Weather in November
November impresses with noticeably colder conditions as Pendleton leans into winter. With temperatures taking another dive and rainfall increasing, autumn beautiful colors turn into winter greys. It's the second wettest month, discretely ushering in freezing temperatures. Weather in November »Weather in December
December brings winter back to Pendleton in full force. Cold conditions persist, with an average temperature drop to 27.3°F (-2.6°C), the lowest of the year, and an increase in snowfall to 2.05" (52mm). Despite the high relative humidity at 78% and shorter daylight hours, the festive season brings a unique warmth to the month. Weather in December »Updated: Jul 17, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the most humid month, with an average relative humidity of 79%.
In Pendleton, during the entire year, the rain falls for 132.7 days and collects up to 12.91" (328mm) of precipitation.
January through April, September, November and December are months with snowfall.
Throughout the year, in Pendleton, there are 17.5 snowfall days, and 9.41" (239mm) of snow is accumulated.
January and December, with an average of 5.4h of sunshine, are months with the least sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall in Pendleton. Snow falls for 4.2 days and accumulates 3.62" (92mm) of snow.
The month with the most rainfall is March, when the rain falls for 17.1 days and typically aggregates up to 1.65" (42mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
May through August and October are months without snowfall.
June has the longest days of the year, with an average of 15h and 36min of daylight.
The warmest month is July, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 60.4°F (15.8°C).
July is the month with the least rainfall. Rain falls for 4.9 days and accumulates 0.24" (6mm) of precipitation.
July and August, with an average of 12h of sunshine, are months with the most sunshine.
July is the month with the highest UV index, with an average maximum UV index of 7.
August is the least humid month, with an average relative humidity of 38%.
Pendleton, Oregon, records the coldest temperatures in December, averaging a high of 37.9°F (3.3°C) and a low of 27.3°F (-2.6°C).
With an average of 8h and 48min of daylight, December has the shortest days of the year.
Average temperature
Pendleton, OR
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (37.9°F).
The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is December (27.3°F).
Average pressure
Pendleton, OR
- Average pressure in January:
30.2"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
30"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.17"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed
Pendleton, OR
- Average wind speed in January:
6.5mph - Average wind speed in February:
7.2mph - Average wind speed in March:
7.8mph - Average wind speed in April:
8.3mph - Average wind speed in May:
7.3mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6.2mph - Average wind speed in October:
6.5mph - Average wind speed in November:
7mph - Average wind speed in December:
6.5mph
The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).
Average humidity
Pendleton, OR
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).
Average rainfall
Pendleton, OR
- Average rainfall in January:
1.46" - Average rainfall in February:
1.5" - Average rainfall in March:
1.65" - Average rainfall in April:
1.18" - Average rainfall in May:
1.26" - Average rainfall in June:
0.91"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.31" - Average rainfall in September:
0.51" - Average rainfall in October:
1.18" - Average rainfall in November:
1.14" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is March (1.65").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days
Pendleton, OR
- Average rainfall days in January:
13.6 days - Average rainfall days in February:
11.8 days - Average rainfall days in March:
17.1 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
13.1 days - Average rainfall days in June:
9 days
- Average rainfall days in July:
4.9 days - Average rainfall days in August:
3.6 days - Average rainfall days in September:
7 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
13 days - Average rainfall days in December:
13.5 days
The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (3.6 days).
Average snowfall
Pendleton, OR
The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and October (0").
Average snowfall days
Pendleton, OR
- Average snowfall days in January:
3.7 days - Average snowfall days in February:
4.2 days - Average snowfall days in March:
2.2 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.1 days - Average snowfall days in October:
0 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight / Average sunshine
Pendleton, OR
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
5h and 24min - Average sunshine in February:
5h and 36min - Average sunshine in March:
7h and 30min - Average sunshine in April:
10h and 6min - Average sunshine in May:
11h and 0min - Average sunshine in June:
11h and 18min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 36min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 6min - Average sunshine in December:
5h and 24min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days
Pendleton, OR
- Average sunshine days in January:
14.3 days - Average sunshine days in February:
12 days - Average sunshine days in March:
11.7 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
18.8 days
- Average sunshine days in July:
24.4 days - Average sunshine days in August:
22.9 days - Average sunshine days in September:
21.1 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
14.9 days - Average sunshine days in December:
13.8 days
The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (11.7 days).
Average UV index
Pendleton, OR
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Pendleton, OR
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility
Pendleton, OR
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
