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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January is a frosty winter month in Kelso, Washington, with an average temperature varying between 44.2°F (6.8°C) and 33.4°F (0.8°C). Kelso experiences a subtle adjustment in high-temperatures to a chilly 44.2°F (6.8°C) with the onset of January, maintaining near parity with December's 42.3°F (5.7°C). Weather in January »
Weather in February
February, the last month of the winter in Kelso, is also a frosty month, with an average temperature ranging between min 33.3°F (0.7°C) and max 45.5°F (7.5°C). The start of February sees the average high-temperature at a still chilly 45.5°F (7.5°C), showing little difference from January's 44.2°F (6.8°C). Weather in February »
Weather in March
March, the first month of the spring in Kelso, is a fresh month, with temperature in the range of an average high of 50°F (10°C) and an average low of 34.7°F (1.5°C). The average high-temperature during March registers at a fresh 50°F (10°C), maintaining a close resemblance to the previous month. Weather in March »
Weather in April
April in Kelso, Washington, is a moderate spring month, with an average temperature fluctuating between 36.7°F (2.6°C) and 55.9°F (13.3°C). Kelso's weather in April shows a minor rise in the average high-temperature, moving slightly up from March's fresh 50°F (10°C) to a mild 55.9°F (13.3°C). Weather in April »
Weather in May
May, the last month of the spring in Kelso, is a comfortable month, with temperature in the range of an average low of 40.8°F (4.9°C) and an average high of 64.8°F (18.2°C). As May arrives, Kelso's weather shows a minor increase in high-temperatures, edging from April's mild 55.9°F (13.3°C) to an enjoyable 64.8°F (18.2°C). Weather in May »
Weather in June
June, the first month of the summer in Kelso, 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 44.6°F (7°C). Kelso signifies an average high-temperature of an agreeable 69.4°F (20.8°C) in June, closely mirroring the 64.8°F (18.2°C) of May. Weather in June »
Weather in July
July in Kelso, Washington, is a warm summer month, with temperature in the range of an average high of 76.8°F (24.9°C) and an average low of 48.9°F (9.4°C). With the onset of July, the average high-temperature subtly transitions from a pleasant 69.4°F (20.8°C) in June to a warm 76.8°F (24.9°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Kelso, Washington, with temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 49.8°F (9.9°C). The warmest temperatures occur during August, when averages reach a peak of 77.9°F (25.5°C) and a low of 49.8°F (9.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Kelso, Washington, with an average temperature ranging between min 47.3°F (8.5°C) and max 70.7°F (21.5°C). The arrival of September corresponds with a minor reduction in the average high-temperature, down from August's moderately hot 77.9°F (25.5°C) to an agreeable 70.7°F (21.5°C). Weather in September »
Weather in October
October, the same as September, in Kelso, Washington, is a moderate autumn month, with an average temperature ranging between max 59°F (15°C) and min 42.3°F (5.7°C). The arrival of October corresponds with a reduction in the average high-temperature, down from September's agreeable 70.7°F (21.5°C) to a moderate 59°F (15°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Kelso, Washington, with an average temperature ranging between min 37.6°F (3.1°C) and max 48.4°F (9.1°C). In Kelso, the average high-temperature in November decreases from a refreshing 59°F (15°C) in October to a chilly 48.4°F (9.1°C). Weather in November »
Weather in December
December, the first month of the winter in Kelso, is still a cold month, with an average temperature fluctuating between 42.3°F (5.7°C) and 32.7°F (0.4°C). December is the coldest month, exhibiting average temperatures of 42.3°F (5.7°C) at the peak and 32.7°F (0.4°C) at the base. Weather in December »
Updated: Jul 3, 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
What is the most humid month?
January, February, November and December, with an average relative humidity of 88%, are most humid months.
What is the rainiest month?
January is the month with the most rainfall. Rain falls for 18.7 days and accumulates 3.9" (99mm) of precipitation.
How many days does it rain?
Throughout the year, there are 175.5 rainfall days, and 25.83" (656mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through March, November and December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 1.7 days and accumulates 1.26" (32mm) of snow.
How much does it snow?
Throughout the year, there are 6.7 snowfall days, and 3.54" (90mm) of snow is accumulated.
What are the months with the least sunshine?
The months with the least sunshine are January, February and December, with an average of 3.5h of sunshine.
When is Daylight Saving Time (DST) in Kelso?
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.
When it does not snow?
In Kelso, snow does not fall in April through October.
When are the longest days?
With an average of 15h and 42min of daylight, June has the longest days of the year.
When is the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 5.
What is the least humid month?
With an average relative humidity of 72%, July is the least humid month.
What is the warmest month?
Kelso's temperature records reveal August as the warmest month, marked by average highs of 77.9°F (25.5°C) and lows of 49.8°F (9.9°C).
What is the driest month?
August is the month with the least rainfall. Rain falls for 6.3 days and accumulates 0.39" (10mm) of precipitation.
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10.4h of sunshine.
What is the month with the lowest UV index?
November is the month with the lowest UV index, with an average maximum UV index of 1.
What month is the coldest?
The coldest month is December, with an average high-temperature of 42.3°F (5.7°C) and an average low-temperature of 32.7°F (0.4°C).
What is the month with the shortest days in Kelso?
December has the shortest days of the year, with an average of 8h and 42min of daylight.
Average temperature
Kelso, WA
The warmest month (with the highest average high temperature) is August (77.9°F).
The month with the lowest average high temperature is December (42.3°F).
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure
Kelso, WA
- 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:
30.06"Hg - Average pressure in May:
30.04"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
Kelso, WA
- Average wind speed in January:
4.8mph - Average wind speed in February:
4.5mph - Average wind speed in March:
4.7mph - Average wind speed in April:
4.4mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4.1mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
4mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.1mph - Average wind speed in November:
4.7mph - Average wind speed in December:
4.7mph
The windiest month (with the highest average wind speed) is January (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.9mph).
Average humidity
Kelso, WA
The months with the highest relative humidity are January, February, November and December (88%).
The month with the lowest relative humidity is July (72%).
Average rainfall
Kelso, WA
- Average rainfall in January:
3.9" - Average rainfall in February:
2.8" - Average rainfall in March:
2.83" - Average rainfall in April:
2.28" - Average rainfall in May:
1.61" - Average rainfall in June:
1.26"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.39" - Average rainfall in September:
1.26" - Average rainfall in October:
2.83" - Average rainfall in November:
2.64" - Average rainfall in December:
3.58"
The wettest month (with the highest rainfall) is January (3.9").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days
Kelso, WA
- Average rainfall days in January:
18.7 days - Average rainfall days in February:
16.7 days - Average rainfall days in March:
20.3 days - Average rainfall days in April:
18.8 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
12 days
- Average rainfall days in July:
6.1 days - Average rainfall days in August:
6.3 days - Average rainfall days in September:
10.8 days - Average rainfall days in October:
15.9 days - Average rainfall days in November:
17.5 days - Average rainfall days in December:
18.5 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is July (6.1 days).
Average snowfall
Kelso, WA
The month with the highest snowfall is January (1.26").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Kelso, WA
- Average snowfall days in January:
1.7 days - Average snowfall days in February:
2.2 days - Average snowfall days in March:
1.4 days - Average snowfall days in April:
0 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:
0.5 days - Average snowfall days in December:
0.9 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Kelso, WA
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 3min - Average daylight in December:
8h and 4min
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:
3h and 3min - Average sunshine in February:
3h and 3min - Average sunshine in March:
4h and 5min - Average sunshine in April:
6h and 2min - Average sunshine in May:
7h and 5min - Average sunshine in June:
8h and 3min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 2min - Average sunshine in September:
8h and 2min - Average sunshine in October:
4h and 5min - Average sunshine in November:
3h and 4min - Average sunshine in December:
3h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 30min).
Average sunshine days
Kelso, WA
- Average sunshine days in January:
10.6 days - Average sunshine days in February:
9.1 days - Average sunshine days in March:
8.9 days - Average sunshine days in April:
9.3 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
15.4 days
- Average sunshine days in July:
22 days - Average sunshine days in August:
21.3 days - Average sunshine days in September:
17 days - Average sunshine days in October:
13.7 days - Average sunshine days in November:
10.5 days - Average sunshine days in December:
10.2 days
The month with the most sunshine days is July (22 days).
The month with the least sunshine days is March (8.9 days).
Average UV index
Kelso, WA
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
Kelso, WA
The months with the most cloud cover are February and March (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Kelso, WA
The month with the highest visibility is August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (4mi).
Kelso, Washington, USA
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