Expand
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 chilly winter month in Heisson, Washington, with an average temperature fluctuating between 44.2°F (6.8°C) and 33.8°F (1°C). As January unfolds, the average high-temperature reaches a frosty 44.2°F (6.8°C), hinting at a slight fluctuation from the previous month. Weather in January »
Weather in February
The last month of the winter, February, is another chilly month in Heisson, Washington, with an average temperature varying between 45.3°F (7.4°C) and 33.8°F (1°C). The commencement of February introduces an average high-temperature of a still frosty 45.3°F (7.4°C), closely mirroring the preceding month. Weather in February »
Weather in March
The first month of the spring, March, is a fresh month in Heisson, Washington, with an average temperature ranging between min 35.8°F (2.1°C) and max 50.4°F (10.2°C). March brings a marginal elevation to a fresh 50.4°F (10.2°C) from February's 45.3°F (7.4°C) in Heisson's average high-temperatures. Weather in March »
Weather in April
April is a mild spring month in Heisson, Washington, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 56.1°F (13.4°C). With the onset of April, the average high-temperature subtly transitions from a fresh 50.4°F (10.2°C) in March to a mild 56.1°F (13.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Heisson, Washington, with an average temperature varying between 64.9°F (18.3°C) and 42.4°F (5.8°C). May introduces a minor temperature shift, with average high-temperatures adjusting from April's moderate 56.1°F (13.4°C) to an enjoyable 64.9°F (18.3°C). Weather in May »
Weather in June
June, the first month of the summer in Heisson, is a pleasant month, with an average temperature fluctuating between 46.4°F (8°C) and 70.2°F (21.2°C). The arrival of June denotes a barely perceptible change in the average high-temperatures to a pleasant 70.2°F (21.2°C) from May's 64.9°F (18.3°C). Weather in June »
Weather in July
July in Heisson, Washington, is a moderately hot summer month, with an average temperature varying between 50.2°F (10.1°C) and 78.4°F (25.8°C). July's arrival brings a modest temperature shift, moving from a pleasant 70.2°F (21.2°C) in June to a warm 78.4°F (25.8°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Heisson, Washington, with an average temperature varying between 52°F (11.1°C) and 79.3°F (26.3°C). August, marked by an average high-temperature of 79.3°F (26.3°C) and a low-temperature of 52°F (11.1°C), is the warmest month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Heisson, Washington, with an average temperature ranging between max 71.6°F (22°C) and min 49.1°F (9.5°C). The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 79.3°F (26.3°C) in August to an agreeable 71.6°F (22°C). Weather in September »
Weather in October
October, the same as September, in Heisson, Washington, is another mild autumn month, with an average temperature ranging between max 59.7°F (15.4°C) and min 43.9°F (6.6°C). In the transition to October, Heisson observes a drop in the average high-temperature, moving from an agreeable 71.6°F (22°C) in September to a mild 59.7°F (15.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Heisson, is also a frosty month, with temperature in the range of an average low of 38.3°F (3.5°C) and an average high of 48.9°F (9.4°C). As October transitions to November, the average high-temperature falls from a moderate 59.7°F (15.4°C) to a chilly 48.9°F (9.4°C). Weather in November »
Weather in December
December, the first month of the winter in Heisson, is also an icy month, with an average temperature varying between 32.7°F (0.4°C) and 42.6°F (5.9°C). Heisson's December weather, with an average high temperature of 42.6°F (5.9°C) and an average low temperature of 32.7°F (0.4°C), tends to be the coldest of the year. Weather in December »
[Resources]Frequently asked questions
What is the rainiest month in Heisson?
The month with the most rainfall in Heisson, Washington, is January, when the rain falls for 18.8 days and typically aggregates up to 6.06" (154mm) of precipitation.
How many days does it rain in Heisson?
Throughout the year, in Heisson, Washington, there are 177.9 rainfall days, and 40.67" (1033mm) of precipitation is accumulated.
When does it snow in Heisson?
Months with snowfall in Heisson are January through March, November and December.
How many days does it snow in Heisson?
In Heisson, Washington, during the entire year, snow falls for 9.8 days and aggregates up to 7.4" (188mm) of snow.
What is the month with the least sunshine in Heisson?
The months with the least sunshine are January and February, with an average of 3.8h of sunshine.
When is the lowest UV index in Heisson?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Heisson.
What is the most humid month in Heisson?
February is the most humid month in Heisson, Washington, with an average relative humidity of 86%.
What is the snowiest month in Heisson?
February is the month with the most snowfall in Heisson. Snow falls for 3.7 days and accumulates 2.76" (70mm) of snow.
When is Daylight Saving Time (DST) in Heisson?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Heisson, 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 Heisson?
In Heisson, Washington, snow does not fall in April through October.
When are the longest days in Heisson?
June has the longest days of the year in Heisson, Washington, with an average of 15h and 42min of daylight.
What is the driest month in Heisson?
July is the month with the least rainfall. Rain falls for 5.6 days and accumulates 0.35" (9mm) of precipitation.
What is the month with the highest UV index in Heisson?
July is the month with the highest UV index, with an average maximum UV index of 6.
What are the warmest months in Heisson?
Heisson's warmest month, August, registers temperatures that range from a high of 79.3°F (26.3°C) to a low of 52°F (11.1°C).
What is the least humid month in Heisson?
The least humid month in Heisson, Washington, is August, with an average relative humidity of 67%.
What month has the most sunshine in Heisson?
August has the most sunshine of the year, with an average of 10.8h of sunshine.
What is the coldest time of year in Heisson?
Heisson notes the coldest temperatures in December, with a average high of 42.6°F (5.9°C) and a low of 32.7°F (0.4°C).
What is the month with the shortest days in Heisson?
December has the shortest days of the year in Heisson, Washington, with an average of 8h and 42min of daylight.
Average temperature
Heisson, WA
The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (42.6°F).
The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is December (32.7°F).
Average pressure
Heisson, WA
- Average pressure in January:
30.12"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.06"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed
Heisson, WA
- Average wind speed in January:
6.1mph - Average wind speed in February:
5.5mph - Average wind speed in March:
5.3mph - Average wind speed in April:
4.7mph - Average wind speed in May:
4.2mph - Average wind speed in June:
4mph
- Average wind speed in July:
4.1mph - Average wind speed in August:
3.8mph - Average wind speed in September:
4mph - Average wind speed in October:
4.6mph - Average wind speed in November:
5.5mph - Average wind speed in December:
5.7mph
The windiest month (with the highest average wind speed) is January (6.1mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity
Heisson, WA
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (67%).
Average rainfall
Heisson, WA
- Average rainfall in January:
6.06" - Average rainfall in February:
4.49" - Average rainfall in March:
4.41" - Average rainfall in April:
3.58" - Average rainfall in May:
2.24" - Average rainfall in June:
1.57"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.47" - Average rainfall in September:
2.01" - Average rainfall in October:
4.69" - Average rainfall in November:
4.84" - Average rainfall in December:
5.94"
The wettest month (with the highest rainfall) is January (6.06").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
Heisson, WA
- Average rainfall days in January:
18.8 days - Average rainfall days in February:
17.3 days - Average rainfall days in March:
20.3 days - Average rainfall days in April:
19 days - Average rainfall days in May:
13.9 days - Average rainfall days in June:
12.1 days
- Average rainfall days in July:
5.6 days - Average rainfall days in August:
5.1 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
16.9 days - Average rainfall days in November:
19.4 days - Average rainfall days in December:
19 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (5.1 days).
Average snowfall
Heisson, WA
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Heisson, WA
- Average snowfall days in January:
1.7 days - Average snowfall days in February:
3.7 days - Average snowfall days in March:
1.9 days - Average snowfall days in April:
0.2 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:
0.8 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (3.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Heisson, 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 5min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 2min - Average sunshine in April:
7h and 1min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 0min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 5min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 1min - Average sunshine in November:
4h and 1min - Average sunshine in December:
3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 3h and 48min).
Average sunshine days
Heisson, WA
- Average sunshine days in January:
10.4 days - Average sunshine days in February:
8.2 days - Average sunshine days in March:
8.5 days - Average sunshine days in April:
9.5 days - Average sunshine days in May:
15.5 days - Average sunshine days in June:
15.6 days
- Average sunshine days in July:
24.1 days - Average sunshine days in August:
23.8 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
13 days - Average sunshine days in November:
9.2 days - Average sunshine days in December:
10.1 days
The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (8.2 days).
Average UV index
Heisson, 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
Heisson, WA
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Heisson, WA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Heisson, Washington, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
