Climate and monthly weather forecastSupai, AZ
Climate and monthly weather forecast
The climate of Supai
Supai, Arizona, USA abides by the BSk Köppen climate classification, indicating a mid-latitude steppe climate. This classification signifies a dry climate with a high evaporation rate, encountered in regions situated in the interior of continents.The weather parameters throughout the year display a vast spectrum flanked by low temperatures from 26.2°F (-3.2°C) in December to highs reaching 85.6°F (29.8°C) in July. The humidity levels peak at 64% in January, gradually declining to a low of 21% in June before steadily rising again towards the end of the year. Relatively mild precipitation ranges throughout the year, from mere 0.08" (2mm) in June to a maximum of 0.51" (13mm) in March.
Snowfall is less frequent, primarily occurring from November to March with the largest quantity recorded in January at 3.11" (79mm). A unique weather pattern is the increased amount of daylight from April to August. The sunshine duration remains extensive from 11.7 hours in May up to a peak of 12.2 hours in August. Wind speed gradually intensifies through the year, starting from 6.6mph (10.6km/h) in January and culminating to 9.7mph (15.6km/h) in April and maintaining that range until June.
The best time to visit Supai
Analyzing the various weather parameters, the best time to visit Supai is between April and June. During these months, temperature highs range from 62.2°F (16.8°C) to 83.5°F (28.6°C) accompanied by lower humidity levels. Moreover, there is minimal rainfall with as low as 0.08" (2mm) in June, allowing for more outdoor activities. The daylight is also longest during these months, extending up to 14.6 hours in June.The worst time to visit Supai
Visits to Supai may be least enjoyable between December and February owing to the lowest temperature levels dropping to 26.2°F (-3.2°C) in December. Snowfall also occurs during these months, peaking at 3.11" (79mm) in January. Despite this, sunshine hours are the fewest from 6.8 hours in December to 8.6 in February, and the highest humidity level of 64% occurs in January.Spring weather in Supai
Spring in Supai is from March to May, characterized by consistently rising temperatures. The average high temperatures move from 55°F (12.8°C) in March up to 70.5°F (21.4°C) in May. Rainfall and snowfall decrease during these months, with snowfall ceasing completely by May. These months also mark an increase in daylight hours reaching a high of 14.1 hours in May.Summer weather in Supai
The summer months, from June to August, witness the warmest temperatures, reaching up to 85.6°F (29.8°C) in July. This period also experiences the lowest humidity and rainfall levels, with June recording the lowest rainfall at 0.08" (2mm). The hours of sunlight are the longest, peaking at 14.6 hours in June.Autumn weather in Supai
Autumn in Supai spans from September to November. The temperatures gradually drop from a high of 78.3°F (25.7°C) in September to 54°F (12.2°C) in November. Rainfall levels start to rise from 0.2" (5mm) in September to 0.28" (7mm) in November. Daylight hours also decrease but still remain relatively high, with 10.3 hours in November.Winter weather in Supai
Winter encompasses December through February, with the low temperatures reaching 26.2°F (-3.2°C) in December. Humidity levels are the highest during these months, peaking in January. The snowfall figures rise, peaking at 3.11" (79mm) in January. The hours of daylight are significantly reduced, dropping to 9.7 hours in December.Weather in January
The weather in January in Supai, Arizona, USA, is characterized by chilly temperatures with relatively low humidity. It sees monthly temperatures range from 26.8°F (-2.9°C) to 43.2°F (6.2°C), making it the coldest month of the year. Weather in January »Weather in February
Despite a slight increase in temperature from January, February in Supai, Arizona, USA, maintains the feel of the winter season. Uniquely, the wind speeds in February intensify from 6.6mph (10.6km/h) to 7.6mph (12.2km/h), offering a refreshing, brisk experience throughout the day. Weather in February »Weather in March
With the curtain of winter fully lifted, March ushers in the spring season in Supai, Arizona, USA. Remarkably, March brings an increased rainfall of 0.51" (13mm), higher than other preceding months and partnered with an appreciably raised temperature, setting the stage for an invigorating spring. Weather in March »Weather in April
April in Supai, Arizona, USA, greets residents with refreshing temperatures and relatively low rainfall. Interestingly, the wind speeds pick up during this month, moving from 8.6mph (13.8km/h) to 9.7mph (15.6km/h), presenting a pleasant breezy environment. Weather in April »Weather in May
May depicts an evident shift towards summer-like conditions in Supai, Arizona, USA. With the temperature soaring from 62.2°F (16.8°C) to 70.5°F (21.4°C) and maintaining minimal rainfall, the ambiance of May is thoroughly summery, distinctly different from the slightly cooler month of April. Weather in May »Weather in June
Arizona's city of Supai welcomes its summer peak in June with high temperatures and a notable drop in rainfall to 0.08" (2mm). July doesn't stray far in terms of temperature but witnesses a slight increase in humidity and rainfall, emphasizing the transition into the monsoon phase. Weather in June »Weather in July
July in Supai, Arizona, USA, is characterized by high summer temperatures matched by a higher relative humidity of 35% as compared to June. Following suit, August sustains a similar weather pattern, albeit displaying slightly lower temperatures. Weather in July »Weather in August
August introduces itself with prevailing warm temperatures in Supai, Arizona, USA, mirroring much of July's weather patterns. Intriguingly, August's nights bring cooler temperatures down to 64°F (17.8°C), providing a respite from the warmth. Weather in August »Weather in September
Supai, Arizona, USA, welcomes the fall season in September with dwindling temperatures and shorter daylight hours. A noticeable decrease in temperature becomes visible, moving down from August's high of 84.2°F (29°C) to 78.3°F (25.7°C), setting the stage for the imminent arrival of cooler temperatures. Weather in September »Weather in October
October in Supai, Arizona, USA, offers a taste of autumn with its falling temperatures and increased rainfall. November, while following this trend, brings about a more drastic shift in weather, leaning closer to winter-like conditions. Weather in October »Weather in November
November signals winter's approach in Supai, Arizona, USA, as temperatures dip further, and the crisp autumn air begins to chill. Remarkably, the temperatures range from 33.6°F (0.9°C) to 54°F (12.2°C), marking a significant dip from October's temperatures. Weather in November »Weather in December
Supai, Arizona, USA, welcomes the heart of winter in December, accompanied by moisture-rich air. The month is characterized by lower temperatures ranging from 26.2°F (-3.2°C) to 43°F (6.1°C) and increased snowfall, up to 2.44" (62mm). Weather in December »Updated: Jul 21, 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
With an average relative humidity of 64%, January is the most humid month.
Throughout the year, there are 46.7 rainfall days, and 4.29" (109mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
January is the month with the most snowfall. Snow falls for 4.9 days and accumulates 3.11" (79mm) of snow.
In Supai, during the entire year, snow falls for 23 days and aggregates up to 10.24" (260mm) of snow.
January has the least sunshine of the year, with an average of 6.8h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most rainfall is March, when the rain falls for 5 days and typically aggregates up to 0.51" (13mm) of precipitation.
With an average relative humidity of 21%, June is the least humid month.
June is the month with the least rainfall. Rain falls for 1.9 days and accumulates 0.08" (2mm) of precipitation.
In Supai, snow does not fall in June through September.
The month with the longest days is June, with an average of 14h and 36min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
The warmest period tends to be July, when average temperatures fluctuate between a high of 85.6°F (29.8°C) and a low of 64.9°F (18.3°C).
August has the most sunshine of the year, with an average of 12.2h of sunshine.
December is the month that records the lowest temperatures, with averages ranging from a high of 43°F (6.1°C) to a low of 26.2°F (-3.2°C).
With an average of 9h and 42min of daylight, December has the shortest days of the year.
Supai does not utilize Daylight Saving Time (DST). MST timezone is used over the entire year.
Average temperature
Supai, AZ
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is December (43°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is December (26.2°F).
Average pressure
Supai, AZ
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
29.99"Hg - Average pressure in April:
29.9"Hg - Average pressure in May:
29.87"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.94"Hg - Average pressure in October:
29.98"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Supai, AZ
- Average wind speed in January:
6.6mph - Average wind speed in February:
7.6mph - Average wind speed in March:
8.6mph - Average wind speed in April:
9.7mph - Average wind speed in May:
9.4mph - Average wind speed in June:
9.4mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
6.7mph - Average wind speed in September:
6.9mph - Average wind speed in October:
7.2mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is January (6.6mph).
Average humidity
Supai, AZ
The month with the highest relative humidity is January (64%).
The month with the lowest relative humidity is June (21%).
Average rainfall
Supai, AZ
- Average rainfall in January:
0.47" - Average rainfall in February:
0.43" - Average rainfall in March:
0.51" - Average rainfall in April:
0.24" - Average rainfall in May:
0.43" - Average rainfall in June:
0.08"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.39" - Average rainfall in September:
0.2" - Average rainfall in October:
0.47" - Average rainfall in November:
0.28" - Average rainfall in December:
0.39"
The wettest month (with the highest rainfall) is March (0.51").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days
Supai, AZ
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
2.9 days - Average rainfall days in March:
5 days - Average rainfall days in April:
4.8 days - Average rainfall days in May:
4.5 days - Average rainfall days in June:
1.9 days
- Average rainfall days in July:
6 days - Average rainfall days in August:
5.7 days - Average rainfall days in September:
3.3 days - Average rainfall days in October:
4.2 days - Average rainfall days in November:
2.5 days - Average rainfall days in December:
3.1 days
The month with the highest number of rainy days is July (6 days).
The month with the least rainy days is June (1.9 days).
Average snowfall
Supai, AZ
- Average snowfall in January:
3.11" - Average snowfall in February:
2.13" - Average snowfall in March:
0.83" - Average snowfall in April:
0.63" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (3.11").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Supai, AZ
- Average snowfall days in January:
4.9 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
2.8 days - Average snowfall days in April:
1.7 days - Average snowfall days in May:
0.4 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 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
2.1 days - Average snowfall days in December:
5.3 days
The months with the highest number of snowfall days are February and December (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Supai, AZ
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
6h and 48min - Average sunshine in February:
8h and 36min - Average sunshine in March:
9h and 6min - Average sunshine in April:
10h and 48min - Average sunshine in May:
11h and 42min - Average sunshine in June:
12h and 6min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 12min - Average sunshine in September:
9h and 48min - Average sunshine in October:
8h and 6min - Average sunshine in November:
7h and 24min - Average sunshine in December:
6h and 54min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is January (Average sunshine: 6h and 48min).
Average sunshine days
Supai, AZ
- Average sunshine days in January:
24.3 days - Average sunshine days in February:
21.4 days - Average sunshine days in March:
23.8 days - Average sunshine days in April:
24 days - Average sunshine days in May:
25.1 days - Average sunshine days in June:
27.3 days
- Average sunshine days in July:
22.8 days - Average sunshine days in August:
22.7 days - Average sunshine days in September:
25.3 days - Average sunshine days in October:
26 days - Average sunshine days in November:
25.6 days - Average sunshine days in December:
23.8 days
The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is February (21.4 days).
Average UV index
Supai, AZ
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Supai, AZ
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).
Average visibility
Supai, AZ
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).
