Climate and monthly weather forecastWeston, OR
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Weston, Oregon, with an average temperature varying between 36.1°F (2.3°C) and 25°F (-3.9°C). The arrival of January sees a recorded average high-temperature of a still cold 36.1°F (2.3°C), showing little divergence from the previous month's conditions. Weather in January »Weather in February
February, the last month of the winter in Weston, is also an icy month, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 26.1°F (-3.3°C). The advent of February denotes an average high-temperature of a still cold 38.3°F (3.5°C), subtly different from January's 36.1°F (2.3°C). Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Weston, Oregon, with an average temperature ranging between max 45.1°F (7.3°C) and min 30.6°F (-0.8°C). March's arrival signals a modest temperature shift, moving from an icy 38.3°F (3.5°C) in February to a chilly 45.1°F (7.3°C). Weather in March »Weather in April
April is a fresh spring month in Weston, Oregon, with an average temperature varying between 34.3°F (1.3°C) and 52.3°F (11.3°C). April comes with a subtle rise, with the average high-temperature adjusting from a frosty 45.1°F (7.3°C) in March to a cool 52.3°F (11.3°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in Weston, Oregon, with an average temperature fluctuating between 61.5°F (16.4°C) and 39.7°F (4.3°C). Weston's weather shows a temperature rise with the arrival of May, moving from a cool 52.3°F (11.3°C) in April to a refreshing 61.5°F (16.4°C). Weather in May »Weather in June
June, the first month of the summer in Weston, is an agreeable month, with temperature in the range of an average high of 68.4°F (20.2°C) and an average low of 45.1°F (7.3°C). June's onset witnesses a minor shift in the average high-temperature, moving from an enjoyable 61.5°F (16.4°C) in May to a pleasant 68.4°F (20.2°C). Weather in June »Weather in July
July is a warm summer month in Weston, Oregon, with an average temperature varying between 80.2°F (26.8°C) and 52.3°F (11.3°C). Weston's transition into July is marked by a rise in the average high-temperature, advancing from a pleasant 68.4°F (20.2°C) in June to a warm 80.2°F (26.8°C). Weather in July »Weather in August
August, the last month of the summer in Weston, is also a moderately hot month, with temperature in the range of an average low of 54.3°F (12.4°C) and an average high of 80.6°F (27°C). The average temperatures reach their apex in August, averaging 80.6°F (27°C) at the high end and 54.3°F (12.4°C) at the low end. Throughout August, the heat index is evaluated at 80.6°F (27°C). Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Weston, Oregon, with an average temperature fluctuating between 48.2°F (9°C) and 71.1°F (21.7°C). With the onset of September, Weston's average high-temperature adjusts, receding from August's warm 80.6°F (27°C) to a pleasant 71.1°F (21.7°C). Weather in September »Weather in October
October, the same as September, in Weston, Oregon, is a moderate autumn month, with an average temperature ranging between max 56.7°F (13.7°C) and min 38.7°F (3.7°C). The shift from September to October sees a distinct decrease in the average high-temperature, dropping from a pleasant 71.1°F (21.7°C) to a mild 56.7°F (13.7°C). Weather in October »Weather in November
November, the last month of the autumn in Weston, is another chilly month, with an average temperature fluctuating between 44.1°F (6.7°C) and 30.9°F (-0.6°C). A subtle decrease in the average high-temperature marks November, falling from October's moderate 56.7°F (13.7°C) to a chilly 44.1°F (6.7°C). Weather in November »Weather in December
December, the first month of the winter in Weston, is still a cold month, with an average temperature varying between 22.3°F (-5.4°C) and 34.5°F (1.4°C). Temperature records mark December as the coldest month, with highs averaging 34.5°F (1.4°C) and lows at 22.3°F (-5.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Weston, OR
The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is December (34.5°F).
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).
Average pressure
Weston, OR
- Average pressure in January:
30.21"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.03"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:
30.11"Hg - Average pressure in December:
30.18"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed
Weston, OR
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.2mph - Average wind speed in March:
6.7mph - Average wind speed in April:
6.6mph - Average wind speed in May:
5.6mph - Average wind speed in June:
5.6mph
- Average wind speed in July:
5.3mph - Average wind speed in August:
5mph - Average wind speed in September:
4.9mph - Average wind speed in October:
5.3mph - Average wind speed in November:
6.3mph - Average wind speed in December:
6.1mph
The windiest month (with the highest average wind speed) is March (6.7mph).
The calmest month (with the lowest average wind speed) is September (4.9mph).
Average humidity
Weston, OR
The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is August (44%).
Average rainfall
Weston, OR
- Average rainfall in January:
3.03" - Average rainfall in February:
3.23" - Average rainfall in March:
2.8" - Average rainfall in April:
2.64" - Average rainfall in May:
2.24" - Average rainfall in June:
1.46"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.43" - Average rainfall in September:
0.79" - Average rainfall in October:
2.09" - Average rainfall in November:
2.2" - Average rainfall in December:
3.19"
The wettest month (with the highest rainfall) is February (3.23").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days
Weston, OR
- Average rainfall days in January:
11.3 days - Average rainfall days in February:
10 days - Average rainfall days in March:
15.9 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
10.8 days
- Average rainfall days in July:
5 days - Average rainfall days in August:
4.8 days - Average rainfall days in September:
7.2 days - Average rainfall days in October:
13 days - Average rainfall days in November:
10.9 days - Average rainfall days in December:
8.5 days
The month with the highest number of rainy days is March (15.9 days).
The month with the least rainy days is August (4.8 days).
Average snowfall
Weston, OR
- Average snowfall in January:
15.08" - Average snowfall in February:
19.21" - Average snowfall in March:
10" - Average snowfall in April:
4.49" - Average snowfall in May:
0.75" - Average snowfall in June:
0"
The month with the highest snowfall is February (19.21").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Weston, OR
- Average snowfall days in January:
16.3 days - Average snowfall days in February:
16.2 days - Average snowfall days in March:
14 days - Average snowfall days in April:
6.5 days - Average snowfall days in May:
2.2 days - Average snowfall days in June:
0.1 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.3 days - Average snowfall days in October:
2 days - Average snowfall days in November:
9.5 days - Average snowfall days in December:
17.7 days
The month with the highest number of snowfall days is December (17.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Weston, 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:
15h and 0min - Average daylight in June:
15h and 42min
- 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 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 36min - Average sunshine in April:
9h and 24min - Average sunshine in May:
10h and 18min - Average sunshine in June:
10h and 48min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 18min - Average sunshine in October:
6h and 42min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 36min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 4h and 36min).
Average sunshine days
Weston, OR
- Average sunshine days in January:
11.5 days - Average sunshine days in February:
8.2 days - Average sunshine days in March:
8.2 days - Average sunshine days in April:
10.6 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
17.1 days
- Average sunshine days in July:
24.5 days - Average sunshine days in August:
24.1 days - Average sunshine days in September:
21.5 days - Average sunshine days in October:
16.2 days - Average sunshine days in November:
12.5 days - Average sunshine days in December:
11.9 days
The month with the most sunshine days is July (24.5 days).
The months with the least sunshine days are February and March (8.2 days).
Average UV index
Weston, OR
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover
Weston, OR
The month with the most cloud cover is February (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility
Weston, OR
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).





