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Monthly climate in Montpelier, Idaho, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Montpelier features a humid continental climate (Dfb). Temperatures typically range between -6 °C (21 °F) and 20 °C (68 °F) through the year, but rarely can drop to -29 °C (-19 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 642 mm (25.3 inches) and receives 120 rainy days on the 1 mm (0.04 inches) threshold annually. Montpelier enjoys an average of 3190 hours of sunshine throughout the year, and daylight varies from 9 hours 7 minutes to 15 hours 12 minutes per day.

Monthly average temperatures in Montpelier, Idaho, United States §

The warmest months in Montpelier 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 -6 to -5 °C (21 - 23 °F) throughout the day. On average each year, Montpelier experiences 48 days above 25 °C (77.0 °F) and 184 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Montpelier, Idaho, 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)		 9°C
(48°F)		 13°C
(56°F)		 20°C
(67°F)		 25°C
(78°F)		 30°C
(87°F)		 31°C
(88°F)		 32°C
(90°F)		 30°C
(87°F)		 22°C
(72°F)		 17°C
(62°F)		 10°C
(50°F)
Mean maximum 3°C
(38°F)		 5°C
(41°F)		 10°C
(51°F)		 15°C
(59°F)		 22°C
(72°F)		 25°C
(77°F)		 30°C
(87°F)		 31°C
(88°F)		 29°C
(84°F)		 19°C
(66°F)		 12°C
(53°F)		 5°C
(41°F)
Average high -3°C
(28°F)		 -1°C
(30°F)		 4°C
(39°F)		 7°C
(44°F)		 14°C
(57°F)		 21°C
(71°F)		 27°C
(81°F)		 26°C
(79°F)		 20°C
(69°F)		 10°C
(51°F)		 4°C
(39°F)		 -2°C
(29°F)
Daily mean -6°C
(21°F)		 -5°C
(23°F)		 -0°C
(32°F)		 2°C
(36°F)		 7°C
(46°F)		 15°C
(59°F)		 20°C
(68°F)		 19°C
(66°F)		 13°C
(56°F)		 4°C
(40°F)		 -2°C
(29°F)		 -6°C
(21°F)
Average low -9°C
(15°F)		 -9°C
(16°F)		 -4°C
(24°F)		 -3°C
(27°F)		 1°C
(35°F)		 7°C
(45°F)		 12°C
(53°F)		 11°C
(51°F)		 6°C
(43°F)		 -1°C
(30°F)		 -7°C
(20°F)		 -10°C
(14°F)
Mean minimum -19°C
(-1°F)		 -17°C
(1°F)		 -13°C
(9°F)		 -10°C
(14°F)		 -6°C
(22°F)		 0°C
(32°F)		 6°C
(42°F)		 5°C
(41°F)		 -3°C
(27°F)		 -13°C
(9°F)		 -19°C
(-3°F)		 -19°C
(-1°F)
Minimum -22°C
(-7°F)		 -20°C
(-3°F)		 -18°C
(-0°F)		 -13°C
(8°F)		 -9°C
(17°F)		 -2°C
(29°F)		 3°C
(38°F)		 2°C
(35°F)		 -6°C
(21°F)		 -29°C
(-19°F)		 -22°C
(-7°F)		 -21°C
(-5°F)

Compare climate in Montpelier with other places

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

Monthly average precipitation in Montpelier, Idaho, United States §

Montpelier usually has the most precipitation in February, April and May, with an average of 13 rainy days and 75 mm (3.0 inches) of precipitation per month. The driest months in Montpelier are June, July and August. On average, 29 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Montpelier, Idaho, 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) 63 (2.5) 90 (3.5) 57 (2.2) 67 (2.7) 69 (2.7) 37 (1.5) 20 (0.8) 30 (1.2) 44 (1.7) 51 (2.0) 58 (2.3) 57 (2.2)
Average precipitation days (≥ 1 mm) 12 16 11 12 13 7 6 6 6 10 10 11

Monthly sunshine hours in Montpelier, Idaho, United States §

The sunniest months in Montpelier are June, July and August, when the sun shines an average of 12 hours 16 minutes a day. Least sunny months in Montpelier: January, February and December receive an average of 5 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Montpelier, Idaho, 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 123 175 258 276 334 376 394 358 302 248 184 158
Mean daily daylight hours 9h 28m 10h 34m 11h 58m 13h 24m 14h 36m 15h 12m 14h 52m 13h 47m 12h 25m 11h 0m 9h 45m 9h 7m

Solar UV radiation in Montpelier, Idaho, United States §

Montpelier experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure. January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Montpelier UV Index data.

Average daily maximum UV levels by month for Montpelier, Idaho, 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) 3 5 8 10 11 12 11 11 9 6 4 3

Detailed Monthly Weather Insights for Montpelier, Idaho, United States

Discover in-depth weather details for every month in Montpelier. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Montpelier's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.