Climate and monthly weather forecastDiamond, OR
Climate and monthly weather forecast
Weather in January
January, like December, in Diamond, Oregon, is an icy winter month, with temperature in the range of an average high of 35.2°F (1.8°C) and an average low of 23.4°F (-4.8°C). The arrival of January coincides with an average high-temperature of a still cold 35.2°F (1.8°C), indicating a minimal shift from December's 33.3°F (0.7°C). Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Diamond, Oregon, with temperature in the range of an average low of 25.5°F (-3.6°C) and an average high of 37.6°F (3.1°C). January's transformation into February witnesses an average high-temperature of a still icy 37.6°F (3.1°C), noting a minor change from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Diamond, is a chilly month, with an average temperature ranging between min 31.6°F (-0.2°C) and max 45.3°F (7.4°C). As March sets, the average high-temperature shows a slight increase, moving up from an icy 37.6°F (3.1°C) in February to a frosty 45.3°F (7.4°C). Weather in March »Weather in April
April in Diamond, Oregon, is a cool spring month, with an average temperature varying between 35.6°F (2°C) and 52.9°F (11.6°C). Observing a minor shift, the average high-temperature during April adjusts from March's frosty 45.3°F (7.4°C) to a cool 52.9°F (11.6°C). Weather in April »Weather in May
May, the last month of the spring in Diamond, is an enjoyable month, with an average temperature varying between 42.8°F (6°C) and 62.4°F (16.9°C). As Diamond transitions into May, the average high-temperature shows a change, moving from a fresh 52.9°F (11.6°C) in April to an enjoyable 62.4°F (16.9°C). Weather in May »Weather in June
June, the first month of the summer in Diamond, is an agreeable month, with temperature in the range of an average low of 49.6°F (9.8°C) and an average high of 71.1°F (21.7°C). June sees a marginal temperature increase, moving from an enjoyable 62.4°F (16.9°C) in May to an agreeable 71.1°F (21.7°C). Weather in June »Weather in July
July in Diamond, Oregon, is a warm summer month, with an average temperature fluctuating between 58.3°F (14.6°C) and 82.9°F (28.3°C). In Diamond, the average temperatures in July are the highest, with a peak at 82.9°F (28.3°C) and a low of 58.3°F (14.6°C). Weather in July »Weather in August
August, the last month of the summer in Diamond, is another warm month, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 59°F (15°C). Diamond's average high-temperature in August is a still warm 81.5°F (27.5°C), marking an insignificant difference from the 82.9°F (28.3°C) of July. Weather in August »Weather in September
The first month of the autumn, September, is also an agreeable month in Diamond, Oregon, with an average temperature fluctuating between 72.5°F (22.5°C) and 52°F (11.1°C). September's arrival corresponds with a decrease in average high-temperatures, from August's moderately hot 81.5°F (27.5°C) to a pleasant 72.5°F (22.5°C). Weather in September »Weather in October
October, the same as September, in Diamond, Oregon, is another refreshing autumn month, with an average temperature varying between 56.8°F (13.8°C) and 40.6°F (4.8°C). As October begins, there is a noticeable decrease in the average high-temperature, falling from a pleasant 72.5°F (22.5°C) in September to a refreshing 56.8°F (13.8°C). Weather in October »Weather in November
November, the last month of the autumn in Diamond, is another chilly month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 44.1°F (6.7°C). As October shifts into November, a slight alteration in temperatures is observed, with average highs reducing from a refreshing 56.8°F (13.8°C) to a frosty 44.1°F (6.7°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Diamond, Oregon, with an average temperature ranging between min 22.5°F (-5.3°C) and max 33.3°F (0.7°C). With average high and low temperatures of 33.3°F (0.7°C) and 22.5°F (-5.3°C) respectively, December is Diamond's coldest month. Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Diamond, OR
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (33.3°F).
The month with the highest average low temperature is August (59°F).
The coldest month (with the lowest average low temperature) is December (22.5°F).
Average pressure
Diamond, OR
- Average pressure in January:
30.23"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.2"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed
Diamond, OR
- Average wind speed in January:
7.6mph - Average wind speed in February:
8.6mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.3mph - Average wind speed in May:
8.4mph - Average wind speed in June:
8mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6.9mph - Average wind speed in October:
7.6mph - Average wind speed in November:
8.1mph - Average wind speed in December:
7.8mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity
Diamond, OR
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall
Diamond, OR
- Average rainfall in January:
0.47" - Average rainfall in February:
0.51" - Average rainfall in March:
0.63" - Average rainfall in April:
0.67" - Average rainfall in May:
0.67" - Average rainfall in June:
0.47"
- Average rainfall in July:
0.2" - Average rainfall in August:
0.24" - Average rainfall in September:
0.39" - Average rainfall in October:
0.39" - Average rainfall in November:
0.43" - Average rainfall in December:
0.55"
The wettest months (with the highest rainfall) are April and May (0.67").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days
Diamond, OR
- Average rainfall days in January:
4.9 days - Average rainfall days in February:
5.7 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
9.6 days - Average rainfall days in May:
8.8 days - Average rainfall days in June:
6.3 days
- Average rainfall days in July:
4 days - Average rainfall days in August:
4.3 days - Average rainfall days in September:
4.6 days - Average rainfall days in October:
7.5 days - Average rainfall days in November:
4.8 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is April (9.6 days).
The month with the least rainy days is July (4 days).
Average snowfall
Diamond, OR
The month with the highest snowfall is December (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Diamond, OR
- Average snowfall days in January:
7.2 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
4.7 days - Average snowfall days in April:
1.9 days - Average snowfall days in May:
0.6 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:
0.7 days - Average snowfall days in November:
3.9 days - Average snowfall days in December:
9 days
The month with the highest number of snowfall days is December (9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Diamond, OR
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
5h and 36min - Average sunshine in February:
5h and 54min - Average sunshine in March:
8h and 0min - Average sunshine in April:
10h and 24min - Average sunshine in May:
11h and 12min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
12h and 6min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 42min - Average sunshine in October:
7h and 30min - Average sunshine in November:
6h and 36min - Average sunshine in December:
5h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days
Diamond, OR
- Average sunshine days in January:
20.7 days - Average sunshine days in February:
18.6 days - Average sunshine days in March:
17.8 days - Average sunshine days in April:
18.3 days - Average sunshine days in May:
20.3 days - Average sunshine days in June:
22.2 days
- Average sunshine days in July:
24.3 days - Average sunshine days in August:
22.8 days - Average sunshine days in September:
23.1 days - Average sunshine days in October:
22.1 days - Average sunshine days in November:
21.8 days - Average sunshine days in December:
19.5 days
The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is March (17.8 days).
Average UV index
Diamond, OR
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Diamond, OR
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility
Diamond, 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).





