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Monthly climate in Salmon, Idaho, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Salmon features a humid continental climate (Dfb). Temperatures typically range between -9 °C (17 °F) and 19 °C (66 °F) through the year, but rarely can drop to -33 °C (-28 °F) or can rise to as high as 34 °C (94 °F). The average annual precipitation amounts to about 702 mm (27.6 inches) and receives 138 rainy days on the 1 mm (0.04 inches) threshold annually. Salmon enjoys an average of 3146 hours of sunshine throughout the year, and daylight varies from 8 hours 47 minutes to 15 hours 33 minutes per day.

Monthly average temperatures in Salmon, Idaho, United States §

The warmest months in Salmon are June, July and August, with daily mean temperatures ranging from 13 to 19 °C (56 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -9 to -7 °C (17 - 20 °F) throughout the day. On average each year, Salmon experiences 46 days above 25 °C (77.0 °F) and 202 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Salmon, 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 4°C
(39°F)		 6°C
(43°F)		 14°C
(57°F)		 16°C
(62°F)		 26°C
(79°F)		 32°C
(90°F)		 32°C
(91°F)		 34°C
(94°F)		 32°C
(90°F)		 23°C
(74°F)		 16°C
(60°F)		 8°C
(47°F)
Mean maximum 3°C
(37°F)		 5°C
(42°F)		 11°C
(51°F)		 14°C
(57°F)		 22°C
(73°F)		 25°C
(78°F)		 31°C
(88°F)		 32°C
(89°F)		 30°C
(87°F)		 18°C
(65°F)		 10°C
(51°F)		 4°C
(40°F)
Average high -4°C
(25°F)		 -2°C
(28°F)		 4°C
(39°F)		 7°C
(44°F)		 13°C
(56°F)		 20°C
(68°F)		 27°C
(80°F)		 26°C
(79°F)		 20°C
(69°F)		 9°C
(49°F)		 3°C
(37°F)		 -4°C
(26°F)
Daily mean -8°C
(17°F)		 -7°C
(20°F)		 -2°C
(30°F)		 1°C
(35°F)		 7°C
(45°F)		 13°C
(56°F)		 19°C
(66°F)		 18°C
(64°F)		 13°C
(55°F)		 3°C
(38°F)		 -3°C
(27°F)		 -9°C
(17°F)
Average low -13°C
(9°F)		 -11°C
(12°F)		 -6°C
(21°F)		 -4°C
(25°F)		 1°C
(33°F)		 6°C
(43°F)		 10°C
(50°F)		 9°C
(49°F)		 5°C
(41°F)		 -3°C
(27°F)		 -9°C
(16°F)		 -14°C
(7°F)
Mean minimum -24°C
(-11°F)		 -21°C
(-5°F)		 -16°C
(4°F)		 -12°C
(10°F)		 -6°C
(21°F)		 -1°C
(31°F)		 5°C
(41°F)		 5°C
(41°F)		 -2°C
(28°F)		 -13°C
(8°F)		 -21°C
(-6°F)		 -27°C
(-16°F)
Minimum -28°C
(-18°F)		 -29°C
(-20°F)		 -21°C
(-6°F)		 -15°C
(5°F)		 -11°C
(12°F)		 -3°C
(28°F)		 2°C
(36°F)		 3°C
(38°F)		 -3°C
(26°F)		 -27°C
(-17°F)		 -27°C
(-16°F)		 -33°C
(-28°F)

Compare climate in Salmon with other places

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

Monthly average precipitation in Salmon, Idaho, United States §

Salmon usually has the most precipitation in February, May and June, with an average of 15 rainy days and 89 mm (3.5 inches) of precipitation per month. The driest months in Salmon are July, August and September. On average, 32 mm (1.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Salmon, 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) 45 (1.8) 90 (3.5) 61 (2.4) 67 (2.6) 80 (3.2) 97 (3.8) 25 (1.0) 30 (1.2) 41 (1.6) 58 (2.3) 54 (2.1) 54 (2.1)
Average precipitation days (≥ 1 mm) 10 19 13 13 15 12 6 6 7 11 13 13

Monthly sunshine hours in Salmon, Idaho, United States §

The sunniest months in Salmon are June, July and August, when the sun shines an average of 11 hours 57 minutes a day. Least sunny months in Salmon: January, February and December receive an average of 5 hours 6 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Salmon, 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 132 167 260 285 325 350 397 352 289 230 188 164
Mean daily daylight hours 9h 11m 10h 25m 11h 57m 13h 32m 14h 53m 15h 33m 15h 11m 13h 59m 12h 27m 10h 53m 9h 30m 8h 47m

Solar UV radiation in Salmon, Idaho, United States §

Salmon experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme 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 4. For more detailed information, check out our hourly Salmon UV Index data.

Average daily maximum UV levels by month for Salmon, 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 7 9 11 11 11 10 8 6 4 2

Detailed Monthly Weather Insights for Salmon, Idaho, United States

Discover in-depth weather details for every month in Salmon. 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 Salmon'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.