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Monthly climate in Polson, Montana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Polson features a humid continental climate (Dfb).Temperatures typically range between -5 °C (23 °F) and 21 °C (69 °F) through the year, but rarely can drop to -25 °C (-12 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 696 mm (27.4 inches) and receives 144 rainy days on the 1 mm (0.04 inches) threshold annually.Polson enjoys an average of 2813 hours of sunshine throughout the year, and daylight varies from 8 hours 28 minutes to 15 hours 55 minutes per day.

Monthly average temperatures in Polson, Montana, United States §

The warmest months in Polson are June, July and August, with daily mean temperatures ranging from 16 to 21 °C (60 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -1 °C (23 - 30 °F) throughout the day. On average each year, Polson experiences 54 days above 25 °C (77.0 °F) and 139 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Polson, Montana, 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 6°C
(44°F)		 12°C
(53°F)		 18°C
(65°F)		 25°C
(77°F)		 30°C
(86°F)		 37°C
(99°F)		 37°C
(100°F)		 38°C
(101°F)		 33°C
(91°F)		 27°C
(81°F)		 16°C
(61°F)		 14°C
(58°F)
Mean maximum 6°C
(42°F)		 8°C
(46°F)		 13°C
(55°F)		 20°C
(69°F)		 26°C
(79°F)		 28°C
(83°F)		 34°C
(94°F)		 35°C
(96°F)		 31°C
(87°F)		 22°C
(71°F)		 13°C
(55°F)		 9°C
(48°F)
Average high -0°C
(32°F)		 -1°C
(30°F)		 5°C
(42°F)		 10°C
(50°F)		 17°C
(62°F)		 21°C
(71°F)		 28°C
(83°F)		 27°C
(81°F)		 20°C
(69°F)		 11°C
(53°F)		 5°C
(41°F)		 1°C
(34°F)
Daily mean -3°C
(27°F)		 -5°C
(23°F)		 1°C
(34°F)		 5°C
(41°F)		 11°C
(52°F)		 16°C
(60°F)		 21°C
(69°F)		 20°C
(68°F)		 14°C
(58°F)		 6°C
(44°F)		 2°C
(35°F)		 -1°C
(30°F)
Average low -6°C
(21°F)		 -9°C
(16°F)		 -3°C
(26°F)		 -0°C
(32°F)		 5°C
(42°F)		 9°C
(49°F)		 12°C
(54°F)		 13°C
(55°F)		 9°C
(48°F)		 2°C
(36°F)		 -1°C
(30°F)		 -4°C
(25°F)
Mean minimum -16°C
(4°F)		 -21°C
(-6°F)		 -14°C
(7°F)		 -6°C
(21°F)		 -1°C
(31°F)		 3°C
(38°F)		 7°C
(46°F)		 7°C
(46°F)		 2°C
(37°F)		 -7°C
(19°F)		 -10°C
(15°F)		 -12°C
(10°F)
Minimum -22°C
(-8°F)		 -25°C
(-12°F)		 -24°C
(-10°F)		 -11°C
(13°F)		 -5°C
(24°F)		 2°C
(36°F)		 6°C
(43°F)		 7°C
(44°F)		 -1°C
(31°F)		 -15°C
(5°F)		 -13°C
(10°F)		 -17°C
(1°F)

Compare climate in Polson with other places

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

Monthly average precipitation in Polson, Montana, United States §

Polson usually has the most precipitation in February, April and November, with an average of 16 rainy days and 80 mm (3.2 inches) of precipitation per month.The driest months in Polson are July, August and September. On average, 26 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Polson, Montana, 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) 51 (2.0) 89 (3.5) 53 (2.1) 78 (3.1) 71 (2.8) 59 (2.3) 16 (0.6) 24 (0.9) 39 (1.5) 71 (2.8) 74 (2.9) 71 (2.8)
Average precipitation days (≥ 1 mm) 12 18 15 17 13 11 3 3 8 12 15 17

Monthly sunshine hours in Polson, Montana, United States §

The sunniest months in Polson are June, July and August, when the sun shines an average of 11 hours 57 minutes a day.Least sunny months in Polson: January, February and December receive an average of 3 hours 32 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Polson, Montana, 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 95 127 225 249 305 341 407 350 269 210 130 100
Mean daily daylight hours 8h 54m 10h 15m 11h 57m 13h 40m 15h 10m 15h 55m 15h 29m 14h 9m 12h 30m 10h 46m 9h 15m 8h 28m

Solar UV radiation in Polson, Montana, United States §

Polson experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, November 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 Polson UV Index data.

Average daily maximum UV levels by month for Polson, Montana, 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 4 6 7 9 9 10 9 7 5 3 2