Climate and monthly weather forecastNapavine, WA
Climate and monthly weather forecast
Weather in January
January is a chilly winter month in Napavine, Washington, with an average temperature ranging between min 33.8°F (1°C) and max 44.6°F (7°C). As January takes hold, the average high-temperature is a frosty 44.6°F (7°C), nearly mirroring that of the previous month. Weather in January »Weather in February
February, the last month of the winter in Napavine, is also a frosty month, with an average temperature fluctuating between 46.4°F (8°C) and 33.4°F (0.8°C). Napavine, Washington, notes an average high-temperature of a still frosty 46.4°F (8°C) in February, hardly diverging from January. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Napavine, Washington, with an average temperature varying between 35.1°F (1.7°C) and 50.5°F (10.3°C). Napavine's average high-temperature in March is a cool 50.5°F (10.3°C), marking an insignificant difference from the 46.4°F (8°C) of February. Weather in March »Weather in April
April is a moderate spring month in Napavine, Washington, with an average temperature varying between 36.9°F (2.7°C) and 56.1°F (13.4°C). April signifies a subtle uplift in the average high-temperature, adjusting from a cool 50.5°F (10.3°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 an enjoyable month in Napavine, Washington, 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). Napavine in May observes a minor temperature shift, with average high-temperatures adjusting from a mild 56.1°F (13.4°C) in April to a comfortable 64.8°F (18.2°C). Weather in May »Weather in June
The first month of the summer, June, is a pleasant month in Napavine, Washington, with an average temperature varying between 69.4°F (20.8°C) and 44.8°F (7.1°C). The start of June marks an average high-temperature of a pleasant 69.4°F (20.8°C), hardly distinguishable from the conditions in May. Weather in June »Weather in July
July in Napavine, Washington, is a moderately hot summer month, with an average temperature ranging between min 48.4°F (9.1°C) and max 76.6°F (24.8°C). The shift from June to July is marked by a slight increase in the average high-temperature, moving from a pleasant 69.4°F (20.8°C) to a moderately hot 76.6°F (24.8°C). Weather in July »Weather in August
August, the last month of the summer in Napavine, is another warm month, with an average temperature varying between 50°F (10°C) and 77.5°F (25.3°C). In Napavine, August records the highest average temperatures, peaking at 77.5°F (25.3°C) and reaching a low of 50°F (10°C). Weather in August »Weather in September
September, the first month of the autumn in Napavine, is still a pleasant month, with an average temperature fluctuating between 70.3°F (21.3°C) and 46.9°F (8.3°C). September brings a slight decrease in the average high-temperature, shifting from a warm 77.5°F (25.3°C) in August to a pleasant 70.3°F (21.3°C). Weather in September »Weather in October
October, the same as September, in Napavine, Washington, is another refreshing autumn month, with temperature in the range of an average high of 58.8°F (14.9°C) and an average low of 42.1°F (5.6°C). A subtle decrease in the average high-temperature marks October, falling from September's agreeable 70.3°F (21.3°C) to a moderate 58.8°F (14.9°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Napavine, Washington, with an average temperature ranging between min 37.9°F (3.3°C) and max 48.4°F (9.1°C). Welcoming November, Napavine observes a shift in the average high-temperature, falling from October's mild 58.8°F (14.9°C) to a frosty 48.4°F (9.1°C). Weather in November »Weather in December
The first month of the winter, December, is still a cold month in Napavine, Washington, with temperature in the range of an average high of 42.6°F (5.9°C) and an average low of 33.1°F (0.6°C). Temperature records mark December as the coldest month, with highs averaging 42.6°F (5.9°C) and lows at 33.1°F (0.6°C). Weather in December »Updated: Jun 21, 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
January, February, November and December, with an average relative humidity of 89%, are most humid months.
The month with the most rainfall is January, when the rain falls for 18.6 days and typically aggregates up to 5.51" (140mm) of precipitation.
In Napavine, during the entire year, the rain falls for 185.5 days and collects up to 36.1" (917mm) of precipitation.
Months with snowfall are January through March, November and December.
Throughout the year, there are 9 snowfall days, and 5.59" (142mm) of snow is accumulated.
The months with the lowest UV index in Napavine are January, February, November and December, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 3.5 days and typically aggregates up to 1.93" (49mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Napavine, 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 Napavine, snow does not fall in April through October.
The month with the longest days is June, with an average of 15h and 48min of daylight.
The least humid month is July, with an average relative humidity of 73%.
The month with the least rainfall is July, when the rain falls for 6.5 days and typically collects 0.47" (12mm) of precipitation.
July is the month with the highest UV index, with an average maximum UV index of 5.
In Napavine, August is the warmest month, with temperatures averaging a high of 77.5°F (25.3°C) and a low of 50°F (10°C).
The month with the most sunshine is August, with an average of 10.2h of sunshine.
December tends to be the coldest month, with temperatures averaging a daily high of 42.6°F (5.9°C) and a low of 33.1°F (0.6°C).
With an average of 8h and 36min of daylight, December has the shortest days of the year.
With an average of 3.5h of sunshine, December has the least sunshine of the year.
Average temperature
Napavine, WA
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is December (33.1°F).
Average pressure
Napavine, WA
- Average pressure in January:
30.09"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:
30.04"Hg - Average pressure in June:
30.04"Hg
- Average pressure in July:
30.06"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:
30.04"Hg - Average pressure in December:
30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed
Napavine, WA
- Average wind speed in January:
4.5mph - Average wind speed in February:
4.3mph - Average wind speed in March:
4.5mph - Average wind speed in April:
4.3mph - Average wind speed in May:
4mph - Average wind speed in June:
4mph
- Average wind speed in July:
3.9mph - Average wind speed in August:
3.7mph - Average wind speed in September:
3.6mph - Average wind speed in October:
3.9mph - Average wind speed in November:
4.5mph - Average wind speed in December:
4.3mph
The windiest months (with the highest average wind speed) are January, March and November (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity
Napavine, WA
The months with the highest relative humidity are January, February, November and December (89%).
The month with the lowest relative humidity is July (73%).
Average rainfall
Napavine, WA
- Average rainfall in January:
5.51" - Average rainfall in February:
3.7" - Average rainfall in March:
3.9" - Average rainfall in April:
2.91" - Average rainfall in May:
2.09" - Average rainfall in June:
1.5"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.55" - Average rainfall in September:
1.65" - Average rainfall in October:
4.09" - Average rainfall in November:
4.37" - Average rainfall in December:
5.35"
The wettest month (with the highest rainfall) is January (5.51").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days
Napavine, WA
- Average rainfall days in January:
18.6 days - Average rainfall days in February:
18.1 days - Average rainfall days in March:
21.5 days - Average rainfall days in April:
19 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
12.6 days
- Average rainfall days in July:
6.5 days - Average rainfall days in August:
6.4 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
16.7 days - Average rainfall days in November:
20.2 days - Average rainfall days in December:
20 days
The month with the highest number of rainy days is March (21.5 days).
The month with the least rainy days is August (6.4 days).
Average snowfall
Napavine, WA
The month with the highest snowfall is February (1.93").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Napavine, WA
- Average snowfall days in January:
1.8 days - Average snowfall days in February:
3.5 days - Average snowfall days in March:
1.7 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 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
1.4 days
The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Napavine, 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 36min - Average sunshine in February:
3h and 36min - Average sunshine in March:
5h and 0min - Average sunshine in April:
6h and 48min - Average sunshine in May:
8h and 0min - Average sunshine in June:
8h and 36min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 18min - Average sunshine in October:
4h and 54min - Average sunshine in November:
3h and 48min - Average sunshine in December:
3h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days
Napavine, WA
- Average sunshine days in January:
9.6 days - Average sunshine days in February:
7.6 days - Average sunshine days in March:
8.2 days - Average sunshine days in April:
9.7 days - Average sunshine days in May:
15 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
20.8 days - Average sunshine days in August:
20.8 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
12.9 days - Average sunshine days in November:
8.5 days - Average sunshine days in December:
9.5 days
The months with the most sunshine days are July and August (20.8 days).
The month with the least sunshine days is February (7.6 days).
Average UV index
Napavine, 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
Napavine, WA
The months with the most cloud cover are January, February and December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility
Napavine, 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).
