Climate and monthly weather forecastOnalaska, WA
Climate and monthly weather forecast
Weather in January
January in Onalaska, Washington, is a chilly winter month, with temperature in the range of an average low of 33.1°F (0.6°C) and an average high of 44.2°F (6.8°C). The transition into January shows a subtle variation to a chilly 44.2°F (6.8°C) from December's 42.3°F (5.7°C) in the average high-temperature. Weather in January »Weather in February
February, the last month of the winter in Onalaska, is another chilly month, with an average temperature varying between 33.1°F (0.6°C) and 45.1°F (7.3°C). With the transition into February, Onalaska notes an average high-temperature of a still frosty 45.1°F (7.3°C), closely resembling January. Weather in February »Weather in March
March, the first month of the spring in Onalaska, is still a chilly month, with an average temperature varying between 49.8°F (9.9°C) and 34.3°F (1.3°C). The arrival of March coincides with an average high-temperature of a still chilly 49.8°F (9.9°C), indicating a minimal shift from February's 45.1°F (7.3°C). Weather in March »Weather in April
April is a mild spring month in Onalaska, Washington, with temperature in the range of an average high of 55.4°F (13°C) and an average low of 36.3°F (2.4°C). With the onset of April, Onalaska's average high-temperature sees a modest rise, moving from March's chilly 49.8°F (9.9°C) to a mild 55.4°F (13°C). Weather in April »Weather in May
May, the last month of the spring in Onalaska, is a refreshing month, with an average temperature varying between 40.3°F (4.6°C) and 63.5°F (17.5°C). May's onset brings a minor rise in the average high-temperature, moving from a moderate 55.4°F (13°C) in April to a comfortable 63.5°F (17.5°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Onalaska, Washington, with an average temperature ranging between min 43.7°F (6.5°C) and max 68.9°F (20.5°C). Onalaska in June observes a minor temperature shift, with average high-temperatures adjusting from a refreshing 63.5°F (17.5°C) in May to an agreeable 68.9°F (20.5°C). Weather in June »Weather in July
July is a moderately hot summer month in Onalaska, Washington, with an average temperature ranging between min 47.3°F (8.5°C) and max 75.7°F (24.3°C). The shift from June to July is marked by a slight increase in the average high-temperature, moving from an agreeable 68.9°F (20.5°C) to a warm 75.7°F (24.3°C). Weather in July »Weather in August
August, the last month of the summer in Onalaska, is another warm month, with an average temperature fluctuating between 76.6°F (24.8°C) and 48.6°F (9.2°C). The warmest period is August, when temperatures fluctuate between an average high of 76.6°F (24.8°C) and a low of 48.6°F (9.2°C). Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Onalaska, Washington, with an average temperature varying between 46°F (7.8°C) and 69.6°F (20.9°C). Onalaska's weather in September involves a mild decrease in the average high-temperature, moving down slightly from August's warm 76.6°F (24.8°C) to a pleasant 69.6°F (20.9°C). Weather in September »Weather in October
October, the same as September, in Onalaska, Washington, is a moderate autumn month, with an average temperature ranging between min 41.7°F (5.4°C) and max 58.3°F (14.6°C). October ushers in a slight temperature change, with average high-temperatures reducing from September's pleasant 69.6°F (20.9°C) to a mild 58.3°F (14.6°C). Weather in October »Weather in November
November, the last month of the autumn in Onalaska, is also a frosty month, with an average temperature varying between 48.2°F (9°C) and 36.9°F (2.7°C). The shift to November brings a decrease in the average high-temperature, falling from a moderate 58.3°F (14.6°C) in October to a chilly 48.2°F (9°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Onalaska, Washington, with temperature in the range of an average high of 42.3°F (5.7°C) and an average low of 32.4°F (0.2°C). December, on average, is the coldest month, registering a high temperature of 42.3°F (5.7°C) and a low of 32.4°F (0.2°C). Weather in December »Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the highest humidity in Onalaska, Washington, are January, February, November and December, with an average relative humidity of 88%.
January is the month with the most rainfall in Onalaska, Washington. Rain falls for 17.1 days and accumulates 3.54" (90mm) of precipitation.
In Onalaska, during the entire year, the rain falls for 170.1 days and collects up to 22.56" (573mm) of precipitation.
Months with snowfall are January through March, November and December.
The month with the most snowfall in Onalaska, Washington, is January, when snow falls for 2.2 days and typically aggregates up to 1.81" (46mm) of snow.
Throughout the year, there are 10 snowfall days, and 5.31" (135mm) of snow is accumulated.
The months with the least sunshine are January, February and December, with an average of 3.7h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
In Onalaska, snow does not fall in April through October.
With an average of 15h and 48min of daylight, June has the longest days of the year.
With an average relative humidity of 73%, July is the least humid month in Onalaska.
July and August are months with the least rain in Onalaska, Washington, when the rain falls for 6.4 days and typically aggregates up to 0.39" (10mm) of rain.
July is the month with the highest UV index in Onalaska, Washington, with an average maximum UV index of 5.
Onalaska's warmest month, August, registers temperatures that range from a high of 76.6°F (24.8°C) to a low of 48.6°F (9.2°C).
August has the most sunshine of the year in Onalaska, Washington, with an average of 10.3h of sunshine.
December is the coldest month in Onalaska, Washington, exhibiting average temperatures of 42.3°F (5.7°C) at the peak and 32.4°F (0.2°C) at the base.
The month with the shortest days is December, with an average of 8h and 36min of daylight.
Average temperature
Onalaska, WA
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (42.3°F).
The month with the highest average low temperature is August (48.6°F).
The coldest month (with the lowest average low temperature) is December (32.4°F).
Average pressure
Onalaska, WA
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.04"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:
30.05"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
Onalaska, WA
- Average wind speed in January:
4.8mph - Average wind speed in February:
4.5mph - Average wind speed in March:
4.6mph - Average wind speed in April:
4.2mph - Average wind speed in May:
3.9mph - Average wind speed in June:
3.8mph
- Average wind speed in July:
3.8mph - Average wind speed in August:
3.5mph - Average wind speed in September:
3.5mph - Average wind speed in October:
4mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.6mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest months (with the lowest average wind speed) are August and September (3.5mph).
Average humidity
Onalaska, WA
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (73%).
Average rainfall
Onalaska, WA
- Average rainfall in January:
3.54" - Average rainfall in February:
2.24" - Average rainfall in March:
2.4" - Average rainfall in April:
1.93" - Average rainfall in May:
1.57" - Average rainfall in June:
1.14"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.39" - Average rainfall in September:
1.18" - Average rainfall in October:
2.44" - Average rainfall in November:
2.2" - Average rainfall in December:
3.11"
The wettest month (with the highest rainfall) is January (3.54").
The driest months (with the least rainfall) are July and August (0.39").
Average rainfall days
Onalaska, WA
- Average rainfall days in January:
17.1 days - Average rainfall days in February:
16.7 days - Average rainfall days in March:
19.4 days - Average rainfall days in April:
18.2 days - Average rainfall days in May:
13.6 days - Average rainfall days in June:
11.6 days
- Average rainfall days in July:
6.4 days - Average rainfall days in August:
6.1 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
15.5 days - Average rainfall days in November:
16.6 days - Average rainfall days in December:
18.3 days
The month with the highest number of rainy days is March (19.4 days).
The month with the least rainy days is August (6.1 days).
Average snowfall
Onalaska, WA
The month with the highest snowfall is January (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Onalaska, WA
- Average snowfall days in January:
2.2 days - Average snowfall days in February:
3.4 days - Average snowfall days in March:
1.9 days - Average snowfall days in April:
0.3 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:
0.7 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Onalaska, WA
- Average daylight in January:
9h and 6min - 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 48min
- Average daylight in July:
15h and 24min - 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 24min - Average daylight in December:
8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
3h and 42min - Average sunshine in February:
3h and 42min - Average sunshine in March:
4h and 54min - Average sunshine in April:
6h and 30min - Average sunshine in May:
7h and 48min - Average sunshine in June:
8h and 24min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
5h and 0min - Average sunshine in November:
3h and 54min - Average sunshine in December:
3h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 42min).
Average sunshine days
Onalaska, WA
- Average sunshine days in January:
11.3 days - Average sunshine days in February:
9 days - Average sunshine days in March:
9.3 days - Average sunshine days in April:
9.5 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
15.1 days
- Average sunshine days in July:
22 days - Average sunshine days in August:
22.1 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
14.5 days - Average sunshine days in November:
11.5 days - Average sunshine days in December:
10.2 days
The month with the most sunshine days is August (22.1 days).
The month with the least sunshine days is February (9 days).
Average UV index
Onalaska, WA
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Onalaska, WA
The months with the most cloud cover are February and March (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility
Onalaska, WA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
