Climate and monthly weather forecastAllyn, WA
Climate and monthly weather forecast
Weather in January
January is a frosty winter month in Allyn, Washington, with an average temperature fluctuating between 44.2°F (6.8°C) and 34.7°F (1.5°C). January's onset brings an average high-temperature of a frosty 44.2°F (6.8°C), showing a minute difference from December's 42.3°F (5.7°C). Weather in January »Weather in February
The last month of the winter, February, is also a frosty month in Allyn, Washington, with an average temperature fluctuating between 34°F (1.1°C) and 45.3°F (7.4°C). February registers an average high-temperature of a still chilly 45.3°F (7.4°C), slightly varied from January's 44.2°F (6.8°C). Weather in February »Weather in March
March, the first month of the spring in Allyn, is a cool month, with an average temperature fluctuating between 50.2°F (10.1°C) and 36.5°F (2.5°C). Allyn's weather, upon March's arrival, documents an average high-temperature of a cool 50.2°F (10.1°C), nearly identical to the prior month. Weather in March »Weather in April
April is a moderate spring month in Allyn, Washington, with temperature in the range of an average high of 55.9°F (13.3°C) and an average low of 39°F (3.9°C). Observing a minor shift, the average high-temperature during April adjusts from March's fresh 50.2°F (10.1°C) to a moderate 55.9°F (13.3°C). Weather in April »Weather in May
May, the last month of the spring in Allyn, is a refreshing month, with an average temperature ranging between min 43.7°F (6.5°C) and max 64.9°F (18.3°C). The beginning of May signals a rise in the average high-temperature, moving from a refreshing 55.9°F (13.3°C) in April to an enjoyable 64.9°F (18.3°C). Weather in May »Weather in June
June, the first month of the summer in Allyn, is an agreeable month, with an average temperature fluctuating between 69.4°F (20.8°C) and 47.5°F (8.6°C). As Allyn welcomes June, the average high-temperature stabilizes at an agreeable 69.4°F (20.8°C), showing little deviation from May's 64.9°F (18.3°C). Weather in June »Weather in July
July is a warm summer month in Allyn, Washington, with an average temperature fluctuating between 77.2°F (25.1°C) and 51.6°F (10.9°C). July showcases a minor temperature ascent, adjusting from June's agreeable 69.4°F (20.8°C) to a warm 77.2°F (25.1°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Allyn, Washington, with an average temperature fluctuating between 53.2°F (11.8°C) and 77.4°F (25.2°C). The warmest temperatures occur during August, when averages reach a peak of 77.4°F (25.2°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 Allyn, Washington, with an average temperature ranging between min 49.8°F (9.9°C) and max 70.3°F (21.3°C). With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 77.4°F (25.2°C) in August to a pleasant 70.3°F (21.3°C). Weather in September »Weather in October
October, like September, is another refreshing autumn month in Allyn, Washington, with an average temperature ranging between max 58.5°F (14.7°C) and min 43.7°F (6.5°C). October brings a drop in Allyn's average high-temperature, falling from a pleasant 70.3°F (21.3°C) in September to a moderate 58.5°F (14.7°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Allyn, Washington, with an average temperature ranging between min 38.5°F (3.6°C) and max 48°F (8.9°C). Transition into November marks a drop in the average high-temperature, moving from a moderate 58.5°F (14.7°C) in October to a chilly 48°F (8.9°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Allyn, Washington, with an average temperature fluctuating between 33.8°F (1°C) and 42.3°F (5.7°C). December tends to be the coldest month, with temperatures averaging a daily high of 42.3°F (5.7°C) and a low of 33.8°F (1°C). Weather in December »Updated: Feb 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Allyn, during the entire year, the rain falls for 175.2 days and collects up to 30.43" (773mm) of precipitation.
January through April, November and December are months with snowfall in Allyn, Washington.
Throughout the year, there are 12.1 snowfall days, and 7.05" (179mm) of snow is accumulated.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Allyn.
February is the month with the most snowfall in Allyn. Snow falls for 3.8 days and accumulates 2.91" (74mm) of snow.
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.
May through October are months without snowfall.
June has the longest days of the year in Allyn, Washington, with an average of 15h and 54min of daylight.
With an average relative humidity of 69%, July is the least humid month.
The month with the least rainfall is July, when the rain falls for 7.4 days and typically collects 0.43" (11mm) of precipitation.
The month with the highest UV index in Allyn is July, with an average maximum UV index of 6.
Allyn reaches its average highest temperatures in August, measuring 77.4°F (25.2°C) at the peak and 53.2°F (11.8°C) at the lowest.
The month with the most sunshine in Allyn, Washington, is August, with an average of 10.6h of sunshine.
December brings the lowest temperatures in Allyn, with an average high of 42.3°F (5.7°C) and an average low of 33.8°F (1°C).
December is the most humid month, with an average relative humidity of 88%.
December is the month with the most rainfall in Allyn, Washington. Rain falls for 18.3 days and accumulates 5" (127mm) of precipitation.
December has the shortest days of the year, with an average of 8h and 30min of daylight.
December has the least sunshine of the year, with an average of 3.8h of sunshine.
Average temperature
Allyn, WA
The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (42.3°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 (33.8°F).
Average pressure
Allyn, 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:
30.04"Hg
- Average pressure in July:
30.05"Hg - Average pressure in August:
30.02"Hg - Average pressure in September:
30.02"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 month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed
Allyn, WA
- Average wind speed in January:
4.9mph - Average wind speed in February:
4.8mph - Average wind speed in March:
5.2mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4mph - Average wind speed in June:
3.9mph
- Average wind speed in July:
3.5mph - Average wind speed in August:
3.5mph - Average wind speed in September:
4mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.8mph - Average wind speed in December:
4.4mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity
Allyn, WA
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is July (69%).
Average rainfall
Allyn, WA
- Average rainfall in January:
4.96" - Average rainfall in February:
2.8" - Average rainfall in March:
3.15" - Average rainfall in April:
2.09" - Average rainfall in May:
1.69" - Average rainfall in June:
1.14"
The wettest month (with the highest rainfall) is December (5").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Allyn, WA
- Average rainfall days in January:
17.6 days - Average rainfall days in February:
15.1 days - Average rainfall days in March:
19.7 days - Average rainfall days in April:
18.8 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
12.3 days
- Average rainfall days in July:
7.4 days - Average rainfall days in August:
6 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
15.4 days - Average rainfall days in November:
18.9 days - Average rainfall days in December:
18.3 days
The month with the highest number of rainy days is March (19.7 days).
The month with the least rainy days is August (6 days).
Average snowfall
Allyn, WA
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Allyn, WA
- Average snowfall days in January:
2.4 days - Average snowfall days in February:
3.8 days - Average snowfall days in March:
2.2 days - Average snowfall days in April:
0.5 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:
2.6 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Allyn, 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 6min - Average sunshine in February:
4h and 12min - Average sunshine in March:
6h and 6min - Average sunshine in April:
7h and 54min - Average sunshine in May:
9h and 0min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 12min - Average sunshine in October:
5h and 30min - Average sunshine in November:
4h and 18min - Average sunshine in December:
3h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 48min).
Average sunshine days
Allyn, WA
- Average sunshine days in January:
10.3 days - Average sunshine days in February:
9.3 days - Average sunshine days in March:
8.8 days - Average sunshine days in April:
9.1 days - Average sunshine days in May:
15.1 days - Average sunshine days in June:
14.3 days
- Average sunshine days in July:
21.8 days - Average sunshine days in August:
22.3 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
14.2 days - Average sunshine days in November:
8.7 days - Average sunshine days in December:
10.2 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.7 days).
Average UV index
Allyn, 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
Allyn, WA
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Allyn, WA
The months with the highest visibility are June, July and August (6mi).
The months with the lowest visibility are January, February, November and December (4mi).
