Climate and monthly weather forecastSouth Colby, WA
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in South Colby, Washington, with an average temperature fluctuating between 36.1°F (2.3°C) and 45°F (7.2°C). As South Colby welcomes January, the average high-temperature is noted at a still chilly 45°F (7.2°C), closely aligning with the preceding month. Weather in January »Weather in February
The last month of the winter, February, is another chilly month in South Colby, Washington, with an average temperature fluctuating between 46°F (7.8°C) and 35.2°F (1.8°C). February's advent presents an average high-temperature of a still chilly 46°F (7.8°C), indicating a slight variation from the conditions of the previous month. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in South Colby, Washington, with an average temperature fluctuating between 37.2°F (2.9°C) and 50.9°F (10.5°C). During March, the average high-temperature is a cool 50.9°F (10.5°C), maintaining a close resemblance to that of the preceding month. Weather in March »Weather in April
April is a refreshing spring month in South Colby, Washington, with temperature in the range of an average low of 39.9°F (4.4°C) and an average high of 56.7°F (13.7°C). With the onset of April, the average high-temperature subtly transitions from a fresh 50.9°F (10.5°C) in March to a moderate 56.7°F (13.7°C). Weather in April »Weather in May
The last month of the spring, May, is a comfortable month in South Colby, Washington, with temperature in the range of an average low of 45°F (7.2°C) and an average high of 65.1°F (18.4°C). As May arrives, South Colby's weather shows a minor increase in high-temperatures, edging from April's mild 56.7°F (13.7°C) to a comfortable 65.1°F (18.4°C). Weather in May »Weather in June
June, the first month of the summer in South Colby, is a pleasant month, with temperature in the range of an average high of 69.4°F (20.8°C) and an average low of 48.4°F (9.1°C). South Colby transitions into June recording an average high-temperature of an agreeable 69.4°F (20.8°C), closely aligning with the preceding month's temperature. Weather in June »Weather in July
July is a moderately hot summer month in South Colby, Washington, with an average temperature fluctuating between 77°F (25°C) and 52.7°F (11.5°C). July's onset is marked by a subtle temperature increase, moving from a pleasant 69.4°F (20.8°C) in June to a moderately hot 77°F (25°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in South Colby, Washington, with temperature in the range of an average high of 77.2°F (25.1°C) and an average low of 53.6°F (12°C). South Colby experiences its highest temperatures in August, with an average peak of 77.2°F (25.1°C) and a low of 53.6°F (12°C). Weather in August »Weather in September
September, the first month of the autumn in South Colby, is also an agreeable month, with temperature in the range of an average low of 50.9°F (10.5°C) and an average high of 70°F (21.1°C). South Colby's weather subtly changes with the onset of September, barely falling from a warm 77.2°F (25.1°C) in August to a pleasant 70°F (21.1°C). Weather in September »Weather in October
October, the same as September, in South Colby, Washington, is another mild autumn month, with an average temperature varying between 58.6°F (14.8°C) and 45°F (7.2°C). A moderate decline in the average high-temperature is seen during October, decreasing from an agreeable 70°F (21.1°C) in September to a refreshing 58.6°F (14.8°C). Weather in October »Weather in November
November, the last month of the autumn in South Colby, is also a frosty month, with an average temperature varying between 48.9°F (9.4°C) and 39.6°F (4.2°C). As November begins, there is a decrease in the average high-temperature, falling from a moderate 58.6°F (14.8°C) in October to a chilly 48.9°F (9.4°C). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in South Colby, Washington, with an average temperature ranging between min 34.9°F (1.6°C) and max 43.2°F (6.2°C). With average high temperatures of 43.2°F (6.2°C) and lows of 34.9°F (1.6°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
South Colby, WA
The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).
Average pressure
South Colby, WA
- Average pressure in January:
30.09"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.05"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.03"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:
30.04"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.07"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed
South Colby, WA
- Average wind speed in January:
5.1mph - Average wind speed in February:
5mph - Average wind speed in March:
5.5mph - Average wind speed in April:
5mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4mph
- Average wind speed in July:
3.5mph - Average wind speed in August:
3.5mph - Average wind speed in September:
4.1mph - Average wind speed in October:
4.5mph - Average wind speed in November:
5.1mph - Average wind speed in December:
4.7mph
The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity
South Colby, WA
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).
Average rainfall
South Colby, WA
- Average rainfall in January:
2.05" - Average rainfall in February:
1.14" - Average rainfall in March:
1.06" - Average rainfall in April:
0.79" - Average rainfall in May:
0.83" - Average rainfall in June:
0.51"
The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days
South Colby, WA
- Average rainfall days in January:
13.4 days - Average rainfall days in February:
12.8 days - Average rainfall days in March:
15.3 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
11.8 days - Average rainfall days in June:
9.7 days
- Average rainfall days in July:
6.2 days - Average rainfall days in August:
5.4 days - Average rainfall days in September:
9.9 days - Average rainfall days in October:
11.8 days - Average rainfall days in November:
15 days - Average rainfall days in December:
14.3 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).
Average snowfall
South Colby, WA
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
South Colby, WA
- Average snowfall days in January:
1.7 days - Average snowfall days in February:
2.8 days - Average snowfall days in March:
0.8 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:
0.6 days - Average snowfall days in December:
1 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
South Colby, WA
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 18min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 6min - Average daylight in June:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 6min - Average sunshine in May:
9h and 12min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 42min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 36min - Average sunshine in November:
4h and 30min - Average sunshine in December:
4h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days
South Colby, WA
- Average sunshine days in January:
14.9 days - Average sunshine days in February:
11.8 days - Average sunshine days in March:
12.7 days - Average sunshine days in April:
13.8 days - Average sunshine days in May:
16.4 days - Average sunshine days in June:
17.3 days
- Average sunshine days in July:
22.4 days - Average sunshine days in August:
22.8 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
16.6 days - Average sunshine days in November:
12.7 days - Average sunshine days in December:
13.8 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).
Average UV index
South Colby, WA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
South Colby, WA
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility
South Colby, WA
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).





