Climate and monthly weather forecastGaston, OR
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Gaston, Oregon, with an average temperature ranging between max 44.4°F (6.9°C) and min 33.6°F (0.9°C). The transition into January is marked with an average high-temperature of a still frosty 44.4°F (6.9°C), showing an insignificant shift from December's 43°F (6.1°C). Weather in January »Weather in February
February, the last month of the winter in Gaston, is another chilly month, with temperature in the range of an average high of 46.4°F (8°C) and an average low of 34.3°F (1.3°C). The shift from January to February is characterized by an average high-temperature of a still chilly 46.4°F (8°C), not significantly different from the 44.4°F (6.9°C) of January. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Gaston, Oregon, with temperature in the range of an average low of 36.1°F (2.3°C) and an average high of 50.5°F (10.3°C). The advent of March reveals an average high-temperature of a cool 50.5°F (10.3°C), showing minimal difference from the prior month. Weather in March »Weather in April
April is a refreshing spring month in Gaston, Oregon, with temperature in the range of an average high of 56.5°F (13.6°C) and an average low of 37.9°F (3.3°C). With the onset of April, Gaston's average high-temperature sees a modest rise, moving from March's cool 50.5°F (10.3°C) to a moderate 56.5°F (13.6°C). Weather in April »Weather in May
May, the last month of the spring in Gaston, is an enjoyable month, with an average temperature fluctuating between 43°F (6.1°C) and 65.3°F (18.5°C). Gaston's transition into May brings a slight rise in the average high-temperature, moving from 56.5°F (13.6°C) in April to a still refreshing 65.3°F (18.5°C). Weather in May »Weather in June
The first month of the summer, June, is an agreeable month in Gaston, Oregon, with temperature in the range of an average high of 70.2°F (21.2°C) and an average low of 46.8°F (8.2°C). June registers an average high-temperature of a pleasant 70.2°F (21.2°C), slightly varied from May's 65.3°F (18.5°C). Weather in June »Weather in July
July is a warm summer month in Gaston, Oregon, with temperature in the range of an average high of 77.5°F (25.3°C) and an average low of 51.4°F (10.8°C). The shift from June to July is marked by a slight increase in the average high-temperature, moving from a pleasant 70.2°F (21.2°C) to a warm 77.5°F (25.3°C). Weather in July »Weather in August
August, the last month of the summer in Gaston, is also a moderately hot month, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 53.2°F (11.8°C). The warmest time of the year is August, with temperatures averaging a high of 79.3°F (26.3°C) and a low of 53.2°F (11.8°C). Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Gaston, Oregon, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 49.8°F (9.9°C). During the shift to September, Gaston records a mild decrease in average high-temperature, moving from a warm 79.3°F (26.3°C) in August to a pleasant 71.6°F (22°C). Weather in September »Weather in October
October, like September, is another refreshing autumn month in Gaston, Oregon, with temperature in the range of an average high of 59.5°F (15.3°C) and an average low of 43.9°F (6.6°C). The beginning of October involves a decrease in the average high-temperature, transitioning from an agreeable 71.6°F (22°C) in September to a mild 59.5°F (15.3°C). Weather in October »Weather in November
November, the last month of the autumn in Gaston, is another chilly month, with an average temperature varying between 38.5°F (3.6°C) and 49.3°F (9.6°C). Gaston experiences a temperature shift at the start of November, with average high-temperatures adjusting from a moderate 59.5°F (15.3°C) in October to a frosty 49.3°F (9.6°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Gaston, Oregon, with an average temperature fluctuating between 33.1°F (0.6°C) and 43°F (6.1°C). With average high temperatures of 43°F (6.1°C) and lows of 33.1°F (0.6°C), December is the coldest month. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Gaston, OR
The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (43°F).
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure
Gaston, OR
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.07"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.05"Hg
- Average pressure in July:
30.05"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed
Gaston, OR
- Average wind speed in January:
4.7mph - Average wind speed in February:
4.8mph - Average wind speed in March:
4.9mph - Average wind speed in April:
4.7mph - Average wind speed in May:
4.3mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
4mph - Average wind speed in September:
4.1mph - Average wind speed in October:
4.4mph - Average wind speed in November:
4.8mph - Average wind speed in December:
4.5mph
The windiest month (with the highest average wind speed) is March (4.9mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity
Gaston, OR
The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is August (69%).
Average rainfall
Gaston, OR
- Average rainfall in January:
5.47" - Average rainfall in February:
3.62" - Average rainfall in March:
3.9" - Average rainfall in April:
2.91" - Average rainfall in May:
2.09" - Average rainfall in June:
1.34"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.47" - Average rainfall in September:
1.57" - Average rainfall in October:
3.46" - Average rainfall in November:
3.74" - Average rainfall in December:
5.39"
The wettest month (with the highest rainfall) is January (5.47").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days
Gaston, OR
- Average rainfall days in January:
19.3 days - Average rainfall days in February:
17.6 days - Average rainfall days in March:
21.4 days - Average rainfall days in April:
19.3 days - Average rainfall days in May:
14 days - Average rainfall days in June:
12.4 days
- Average rainfall days in July:
6.5 days - Average rainfall days in August:
6.2 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
16.8 days - Average rainfall days in November:
19.2 days - Average rainfall days in December:
19.4 days
The month with the highest number of rainy days is March (21.4 days).
The month with the least rainy days is August (6.2 days).
Average snowfall
Gaston, OR
The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Gaston, OR
- Average snowfall days in January:
1.5 days - Average snowfall days in February:
2.9 days - Average snowfall days in March:
1.6 days - Average snowfall days in April:
0.1 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 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.3 days - Average snowfall days in December:
0.7 days
The month with the highest number of snowfall days is February (2.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Gaston, 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 0min - 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:
3h and 30min - Average sunshine in February:
3h and 30min - Average sunshine in March:
4h and 48min - Average sunshine in April:
6h and 18min - Average sunshine in May:
7h and 48min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 24min - Average sunshine in September:
8h and 42min - Average sunshine in October:
4h and 54min - Average sunshine in November:
4h and 0min - Average sunshine in December:
3h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 3h and 30min).
Average sunshine days
Gaston, OR
- Average sunshine days in January:
10.2 days - Average sunshine days in February:
7.8 days - Average sunshine days in March:
7.6 days - Average sunshine days in April:
9.3 days - Average sunshine days in May:
15.7 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
21.8 days - Average sunshine days in August:
22 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
13.1 days - Average sunshine days in November:
9.4 days - Average sunshine days in December:
10.1 days
The month with the most sunshine days is August (22 days).
The month with the least sunshine days is March (7.6 days).
Average UV index
Gaston, OR
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover
Gaston, OR
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Gaston, OR
The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).





