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Monthly climate in Libby, Montana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Libby features a humid continental climate (Dsb).Temperatures typically range between -7 °C (20 °F) and 20 °C (68 °F) through the year, but rarely can drop to -31 °C (-23 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 790 mm (31.1 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Libby enjoys an average of 2740 hours of sunshine throughout the year, and daylight varies from 8 hours 22 minutes to 16 hours 1 minutes per day.

Monthly average temperatures in Libby, Montana, United States §

The warmest months in Libby are June, July and August, with daily mean temperatures ranging from 15 to 20 °C (59 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -3 °C (20 - 26 °F) throughout the day. On average each year, Libby experiences 42 days above 25 °C (77.0 °F) and 161 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Libby, 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 5°C
(41°F)		 12°C
(54°F)		 16°C
(62°F)		 25°C
(77°F)		 28°C
(83°F)		 38°C
(100°F)		 37°C
(99°F)		 39°C
(102°F)		 31°C
(88°F)		 23°C
(74°F)		 12°C
(54°F)		 10°C
(51°F)
Mean maximum 4°C
(39°F)		 6°C
(44°F)		 11°C
(53°F)		 19°C
(66°F)		 25°C
(77°F)		 27°C
(81°F)		 34°C
(93°F)		 35°C
(95°F)		 29°C
(84°F)		 19°C
(66°F)		 10°C
(50°F)		 7°C
(44°F)
Average high -2°C
(29°F)		 -3°C
(27°F)		 4°C
(40°F)		 9°C
(48°F)		 16°C
(61°F)		 20°C
(69°F)		 27°C
(80°F)		 26°C
(79°F)		 19°C
(66°F)		 10°C
(50°F)		 3°C
(38°F)		 -1°C
(31°F)
Daily mean -5°C
(23°F)		 -7°C
(20°F)		 -0°C
(32°F)		 4°C
(39°F)		 10°C
(51°F)		 15°C
(59°F)		 20°C
(68°F)		 19°C
(66°F)		 13°C
(55°F)		 5°C
(41°F)		 0°C
(32°F)		 -3°C
(26°F)
Average low -9°C
(17°F)		 -11°C
(12°F)		 -5°C
(24°F)		 -1°C
(30°F)		 5°C
(41°F)		 8°C
(47°F)		 11°C
(53°F)		 11°C
(53°F)		 7°C
(45°F)		 0°C
(33°F)		 -3°C
(27°F)		 -6°C
(21°F)
Mean minimum -21°C
(-6°F)		 -25°C
(-13°F)		 -17°C
(3°F)		 -8°C
(18°F)		 -2°C
(29°F)		 2°C
(36°F)		 6°C
(44°F)		 6°C
(44°F)		 -0°C
(31°F)		 -8°C
(17°F)		 -11°C
(13°F)		 -17°C
(2°F)
Minimum -26°C
(-15°F)		 -31°C
(-23°F)		 -27°C
(-16°F)		 -12°C
(10°F)		 -5°C
(24°F)		 0°C
(33°F)		 5°C
(41°F)		 5°C
(42°F)		 -3°C
(27°F)		 -15°C
(6°F)		 -15°C
(5°F)		 -26°C
(-14°F)

Compare climate in Libby with other places

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

Monthly average precipitation in Libby, Montana, United States §

Libby usually has the most precipitation in February, November and December, with an average of 15 rainy days and 97 mm (3.8 inches) of precipitation per month.The driest months in Libby are July, August and September. On average, 28 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Libby, 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) 76 (3.0) 95 (3.8) 66 (2.6) 74 (2.9) 66 (2.6) 45 (1.8) 16 (0.6) 25 (1.0) 44 (1.7) 87 (3.4) 92 (3.6) 102 (4.0)
Average precipitation days (≥ 1 mm) 13 15 14 14 12 10 4 4 7 12 16 15

Monthly sunshine hours in Libby, Montana, United States §

The sunniest months in Libby are June, July and August, when the sun shines an average of 12 hours 2 minutes a day.Least sunny months in Libby: January, November and December receive an average of 2 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Libby, 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 76 126 206 248 311 347 409 349 265 207 108 82
Mean daily daylight hours 8h 49m 10h 13m 11h 57m 13h 43m 15h 14m 16h 1m 15h 35m 14h 13m 12h 30m 10h 44m 9h 11m 8h 22m

Solar UV radiation in Libby, Montana, United States §

Libby experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 9 - 9, 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 Libby UV Index data.

Average daily maximum UV levels by month for Libby, 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 9 9 7 5 3 2