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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, like December, in Ahtanum, Washington, is an icy winter month, with an average temperature ranging between min 26.6°F (-3°C) and max 37.6°F (3.1°C). In January, Ahtanum experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 36.9°F (2.7°C) in December to a still icy 37.6°F (3.1°C). Weather in January »
Weather in February
February, the last month of the winter in Ahtanum, is also a wintry month, with an average temperature varying between 28.9°F (-1.7°C) and 41.5°F (5.3°C). Ahtanum's weather in February, with an average high-temperature of a still icy 41.5°F (5.3°C), subtly shifts from January's 37.6°F (3.1°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Ahtanum, Washington, with an average temperature fluctuating between 34.7°F (1.5°C) and 49.5°F (9.7°C). As March arrives, a slight rise in the average high-temperature is observed, moving from an icy 41.5°F (5.3°C) in February to a chilly 49.5°F (9.7°C). Weather in March »
Weather in April
April in Ahtanum, Washington, is a mild spring month, with temperature in the range of an average high of 59.2°F (15.1°C) and an average low of 40.1°F (4.5°C). The shift into April is accompanied by a temperature increase, with the average high-temperature rising from a frosty 49.5°F (9.7°C) in March to a moderate 59.2°F (15.1°C). Weather in April »
Weather in May
May, the last month of the spring in Ahtanum, is an agreeable month, with an average temperature varying between 69.3°F (20.7°C) and 47.5°F (8.6°C). May's onset is marked by a temperature increase, moving from a moderate 59.2°F (15.1°C) in April to a pleasant 69.3°F (20.7°C). Weather in May »
Weather in June
June, the first month of the summer in Ahtanum, is a warm month, with an average temperature ranging between max 76.5°F (24.7°C) and min 52.3°F (11.3°C). June marks a minor ascent in the average high-temperature, adjusting from May's pleasant 69.3°F (20.7°C) to a warm 76.5°F (24.7°C). Weather in June »
Weather in July
July is a tropical summer month in Ahtanum, Washington, with an average temperature fluctuating between 59.2°F (15.1°C) and 86.2°F (30.1°C). Ahtanum's transition into July is marked by a temperature shift, moving from a warm 76.5°F (24.7°C) in June to a tropical 86.2°F (30.1°C). Weather in July »
Weather in August
August, the last month of the summer in Ahtanum, is another tropical month, with an average temperature ranging between min 60.3°F (15.7°C) and max 86.5°F (30.3°C). August is the month when Ahtanum sees the highest average temperatures, with a high of 86.5°F (30.3°C) and a low of 60.3°F (15.7°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Ahtanum, Washington, with an average temperature varying between 74.8°F (23.8°C) and 53.4°F (11.9°C). With September's arrival, Ahtanum sees a decrease in average high-temperatures, moving from a hot 86.5°F (30.3°C) in August to a moderately hot 74.8°F (23.8°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Ahtanum, Washington, with an average temperature varying between 60.1°F (15.6°C) and 42.6°F (5.9°C). In Ahtanum, stepping into October signifies a significant temperature decrement, moving down from September's warm 74.8°F (23.8°C) to a mild 60.1°F (15.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Ahtanum, Washington, with temperature in the range of an average high of 46.8°F (8.2°C) and an average low of 32.7°F (0.4°C). In Ahtanum, the beginning of November is marked by a lowered average high-temperature, shifting from October's refreshing 60.1°F (15.6°C) to a frosty 46.8°F (8.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Ahtanum, Washington, with an average temperature ranging between max 36.9°F (2.7°C) and min 25.5°F (-3.6°C). December, with average temperatures reaching a high of 36.9°F (2.7°C) and a low of 25.5°F (-3.6°C), is the coldest month. Weather in December »
[Resources]Frequently asked questions
What is the most humid month in Ahtanum?
The most humid month in Ahtanum, Washington, is January, with an average relative humidity of 81%.
What is the rainiest month in Ahtanum?
January is the month with the most rainfall in Ahtanum. Rain falls for 10.3 days and accumulates 0.87" (22mm) of precipitation.
How much does it rain in Ahtanum?
Throughout the year, there are 82.2 rainfall days, and 5.43" (138mm) of precipitation is accumulated.
When does it snow in Ahtanum?
January through March, September, November and December are months with snowfall.
How much does it snow in Ahtanum?
In Ahtanum, Washington, during the entire year, snow falls for 18.5 days and aggregates up to 7.8" (198mm) of snow.
What is the month with the least sunshine in Ahtanum?
With an average of 5.6h of sunshine, January has the least sunshine of the year in Ahtanum, Washington.
What are the months with the lowest UV index in Ahtanum?
The months with the lowest UV index in Ahtanum, Washington, are January, February, November and December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST) in Ahtanum?
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 Ahtanum?
April through August and October are months without snowfall in Ahtanum.
When are the longest days in Ahtanum?
June has the longest days of the year in Ahtanum, with an average of 15h and 48min of daylight.
What are the least humid months in Ahtanum?
The months with the lowest humidity are July and August, with an average relative humidity of 39%.
What is the driest month in Ahtanum?
The month with the least rainfall is July, when the rain falls for 2.1 days and typically collects 0.08" (2mm) of precipitation.
What are the months with the most sunshine in Ahtanum?
The months with the most sunshine are July and August, with an average of 12.1h of sunshine.
What is the month with the highest UV index in Ahtanum?
The month with the highest UV index in Ahtanum, Washington, is July, with an average maximum UV index of 7.
What time of the year is the hottest in Ahtanum?
August is the warmest month of the year in Ahtanum, Washington, registering average temperatures as high as 86.5°F (30.3°C) and as low as 60.3°F (15.7°C).
What part of the year is the coldest in Ahtanum?
Ahtanum's December weather, marked by an average high temperature of 36.9°F (2.7°C) and an average low temperature of 25.5°F (-3.6°C), is the coldest in the year.
When does it snow the most in Ahtanum?
The month with the most snowfall in Ahtanum, Washington, is December, when snow falls for 5.4 days and typically aggregates up to 2.76" (70mm) of snow.
What is the month with the shortest days in Ahtanum?
With an average of 8h and 36min of daylight, December has the shortest days of the year in Ahtanum, Washington.
Average temperature
Ahtanum, WA
The warmest month (with the highest average high temperature) is August (86.5°F).
The month with the lowest average high temperature is December (36.9°F).
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).
Average pressure
Ahtanum, WA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.96"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed
Ahtanum, WA
- Average wind speed in January:
4.5mph - Average wind speed in February:
4.9mph - Average wind speed in March:
5.9mph - Average wind speed in April:
6.8mph - Average wind speed in May:
6.8mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6mph - Average wind speed in October:
5.3mph - Average wind speed in November:
5mph - Average wind speed in December:
4.4mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest month (with the lowest average wind speed) is December (4.4mph).
Average humidity
Ahtanum, WA
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall
Ahtanum, WA
- Average rainfall in January:
0.87" - Average rainfall in February:
0.59" - Average rainfall in March:
0.63" - Average rainfall in April:
0.31" - Average rainfall in May:
0.63" - Average rainfall in June:
0.24"
- Average rainfall in July:
0.08" - Average rainfall in August:
0.16" - Average rainfall in September:
0.24" - Average rainfall in October:
0.43" - Average rainfall in November:
0.43" - Average rainfall in December:
0.83"
The wettest month (with the highest rainfall) is January (0.87").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days
Ahtanum, WA
- Average rainfall days in January:
10.3 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
7.8 days - Average rainfall days in May:
6.8 days - Average rainfall days in June:
4.8 days
- Average rainfall days in July:
2.1 days - Average rainfall days in August:
2 days - Average rainfall days in September:
3.9 days - Average rainfall days in October:
8 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
9.1 days
The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is August (2 days).
Average snowfall
Ahtanum, WA
The month with the highest snowfall is December (2.76").
The months with the least snowfall are April, May, June, July, August and October (0").
Average snowfall days
Ahtanum, WA
- Average snowfall days in January:
4.5 days - Average snowfall days in February:
4.3 days - Average snowfall days in March:
2.1 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:
0.1 days - Average snowfall days in October:
0 days - Average snowfall days in November:
2 days - Average snowfall days in December:
5.4 days
The month with the highest number of snowfall days is December (5.4 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight / Average sunshine
Ahtanum, 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 5min
- 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 2min - Average daylight in December:
8h and 4min
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:
5h and 4min - Average sunshine in February:
6h and 1min - Average sunshine in March:
8h and 3min - Average sunshine in April:
11h and 0min - Average sunshine in May:
11h and 2min - Average sunshine in June:
11h and 5min
- Average sunshine in July:
12h and 1min - Average sunshine in August:
12h and 1min - Average sunshine in September:
11h and 1min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 5min - Average sunshine in December:
5h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days
Ahtanum, WA
- Average sunshine days in January:
17 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
18.8 days - Average sunshine days in May:
21.2 days - Average sunshine days in June:
23 days
- Average sunshine days in July:
27.5 days - Average sunshine days in August:
27.4 days - Average sunshine days in September:
23.8 days - Average sunshine days in October:
20 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
17.3 days
The month with the most sunshine days is July (27.5 days).
The month with the least sunshine days is February (15.8 days).
Average UV index
Ahtanum, WA
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Ahtanum, WA
The month with the most cloud cover is January (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility
Ahtanum, WA
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Ahtanum, Washington, USA
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