nomadseason

Monthly climate in Napavine, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Napavine features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 4 °C (40 °F) and 19 °C (66 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 44 °C (112 °F).The average annual precipitation amounts to about 1322 mm (52.0 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually.Napavine enjoys an average of 2496 hours of sunshine throughout the year, and daylight varies from 8 hours 37 minutes to 15 hours 44 minutes per day.

Monthly average temperatures in Napavine, Washington, United States §

The warmest months in Napavine are July, August and September, with daily mean temperatures ranging from 16 to 19 °C (61 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 5 °C (40 - 41 °F) throughout the day. On average each year, Napavine experiences 43 days above 25 °C (77.0 °F) and 45 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Napavine, Washington, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 15°C
(59°F)		 15°C
(59°F)		 25°C
(76°F)		 29°C
(84°F)		 30°C
(87°F)		 44°C
(112°F)		 36°C
(98°F)		 38°C
(100°F)		 34°C
(93°F)		 24°C
(76°F)		 17°C
(63°F)		 14°C
(57°F)
Mean maximum 13°C
(55°F)		 13°C
(55°F)		 19°C
(66°F)		 24°C
(76°F)		 28°C
(82°F)		 33°C
(91°F)		 33°C
(92°F)		 36°C
(97°F)		 30°C
(87°F)		 21°C
(70°F)		 16°C
(62°F)		 13°C
(55°F)
Average high 8°C
(47°F)		 8°C
(46°F)		 12°C
(53°F)		 15°C
(59°F)		 19°C
(66°F)		 22°C
(71°F)		 25°C
(78°F)		 26°C
(80°F)		 22°C
(72°F)		 15°C
(60°F)		 10°C
(51°F)		 7°C
(46°F)
Daily mean 5°C
(41°F)		 4°C
(40°F)		 7°C
(45°F)		 10°C
(50°F)		 13°C
(56°F)		 16°C
(61°F)		 18°C
(65°F)		 19°C
(66°F)		 16°C
(61°F)		 10°C
(50°F)		 7°C
(45°F)		 4°C
(40°F)
Average low 2°C
(37°F)		 1°C
(34°F)		 3°C
(37°F)		 5°C
(41°F)		 8°C
(47°F)		 10°C
(51°F)		 12°C
(54°F)		 13°C
(55°F)		 11°C
(52°F)		 6°C
(42°F)		 4°C
(39°F)		 2°C
(35°F)
Mean minimum -4°C
(25°F)		 -5°C
(23°F)		 -2°C
(28°F)		 -0°C
(32°F)		 3°C
(37°F)		 6°C
(43°F)		 9°C
(48°F)		 8°C
(47°F)		 5°C
(42°F)		 -1°C
(30°F)		 -3°C
(27°F)		 -5°C
(23°F)
Minimum -9°C
(16°F)		 -7°C
(19°F)		 -3°C
(26°F)		 -3°C
(28°F)		 1°C
(34°F)		 5°C
(42°F)		 8°C
(47°F)		 7°C
(45°F)		 4°C
(39°F)		 -4°C
(25°F)		 -4°C
(24°F)		 -7°C
(20°F)

Compare climate in Napavine with other places

Compare temperature, precipitation, sunshine, UV index in Napavine, Washington, United States with other places around the world.

Monthly average precipitation in Napavine, Washington, United States §

Napavine usually has the most precipitation in January, November and December, with an average of 17 rainy days and 179 mm (7.0 inches) of precipitation per month.The driest months in Napavine are June, July and August. On average, 26 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Napavine, Washington, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 177 (7.0) 159 (6.3) 143 (5.6) 121 (4.7) 76 (3.0) 56 (2.2) 11 (0.4) 11 (0.4) 84 (3.3) 125 (4.9) 166 (6.5) 193 (7.6)
Average precipitation days (≥ 1 mm) 17 18 16 15 11 8 2 3 9 12 17 19

Monthly sunshine hours in Napavine, Washington, United States §

The sunniest months in Napavine are June, July and August, when the sun shines an average of 10 hours 31 minutes a day.Least sunny months in Napavine: January, February and December receive an average of 3 hours 11 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Napavine, Washington, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 80 116 190 215 275 303 346 318 247 189 119 93
Mean daily daylight hours 9h 2m 10h 20m 11h 57m 13h 37m 15h 1m 15h 44m 15h 20m 14h 4m 12h 28m 10h 49m 9h 22m 8h 37m

Solar UV radiation in Napavine, Washington, United States §

Napavine experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Napavine UV Index data.

Average daily maximum UV levels by month for Napavine, Washington, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 5 6 9 10 9 8 7 5 3 2