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Monthly climate in Ammon, Idaho, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Ammon features a humid continental climate (Dfb). Temperatures typically range between -5 °C (24 °F) and 23 °C (74 °F) through the year, but rarely can drop to -26 °C (-14 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 438 mm (17.3 inches) and receives 97 rainy days on the 1 mm (0.04 inches) threshold annually. Ammon enjoys an average of 3242 hours of sunshine throughout the year, and daylight varies from 8 hours 59 minutes to 15 hours 21 minutes per day.

Monthly average temperatures in Ammon, Idaho, United States §

The warmest months in Ammon are June, July and August, with daily mean temperatures ranging from 18 to 23 °C (65 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -3 °C (24 - 27 °F) throughout the day. On average each year, Ammon experiences 77 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 Ammon, 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 10°C
(51°F)		 12°C
(54°F)		 21°C
(69°F)		 25°C
(78°F)		 31°C
(88°F)		 35°C
(94°F)		 35°C
(96°F)		 36°C
(97°F)		 35°C
(96°F)		 26°C
(79°F)		 21°C
(70°F)		 12°C
(54°F)
Mean maximum 6°C
(43°F)		 8°C
(47°F)		 17°C
(63°F)		 22°C
(72°F)		 28°C
(82°F)		 29°C
(84°F)		 35°C
(95°F)		 35°C
(95°F)		 33°C
(92°F)		 23°C
(74°F)		 16°C
(60°F)		 7°C
(46°F)
Average high -1°C
(31°F)		 1°C
(35°F)		 8°C
(47°F)		 13°C
(55°F)		 19°C
(66°F)		 25°C
(77°F)		 31°C
(88°F)		 29°C
(85°F)		 24°C
(75°F)		 13°C
(56°F)		 7°C
(45°F)		 0°C
(33°F)
Daily mean -5°C
(24°F)		 -3°C
(27°F)		 3°C
(37°F)		 7°C
(45°F)		 12°C
(54°F)		 18°C
(65°F)		 23°C
(74°F)		 21°C
(71°F)		 16°C
(61°F)		 7°C
(45°F)		 2°C
(36°F)		 -4°C
(26°F)
Average low -8°C
(18°F)		 -6°C
(21°F)		 -2°C
(29°F)		 1°C
(35°F)		 6°C
(43°F)		 11°C
(51°F)		 14°C
(58°F)		 13°C
(56°F)		 9°C
(48°F)		 1°C
(35°F)		 -2°C
(28°F)		 -7°C
(19°F)
Mean minimum -19°C
(-2°F)		 -15°C
(5°F)		 -12°C
(11°F)		 -6°C
(22°F)		 -2°C
(29°F)		 3°C
(38°F)		 8°C
(47°F)		 7°C
(45°F)		 1°C
(33°F)		 -9°C
(17°F)		 -10°C
(14°F)		 -16°C
(3°F)
Minimum -26°C
(-14°F)		 -19°C
(-1°F)		 -19°C
(-2°F)		 -9°C
(17°F)		 -4°C
(25°F)		 1°C
(34°F)		 6°C
(42°F)		 3°C
(38°F)		 -1°C
(31°F)		 -19°C
(-2°F)		 -13°C
(9°F)		 -18°C
(0°F)

Compare climate in Ammon with other places

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

Monthly average precipitation in Ammon, Idaho, United States §

Ammon usually has the most precipitation in February, April and May, with an average of 11 rainy days and 54 mm (2.1 inches) of precipitation per month. The driest months in Ammon are July, August and September. On average, 18 mm (0.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ammon, 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) 40 (1.6) 48 (1.9) 43 (1.7) 55 (2.2) 58 (2.3) 31 (1.2) 11 (0.4) 16 (0.6) 26 (1.0) 39 (1.5) 32 (1.3) 41 (1.6)
Average precipitation days (≥ 1 mm) 10 12 10 12 11 6 3 3 4 7 9 10

Monthly sunshine hours in Ammon, Idaho, United States §

The sunniest months in Ammon are June, July and August, when the sun shines an average of 12 hours 17 minutes a day. Least sunny months in Ammon: January, February and December receive an average of 5 hours 4 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ammon, 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 126 174 261 284 339 374 398 358 302 261 199 161
Mean daily daylight hours 9h 21m 10h 30m 11h 58m 13h 27m 14h 43m 15h 21m 15h 0m 13h 52m 12h 26m 10h 57m 9h 39m 8h 59m

Solar UV radiation in Ammon, Idaho, United States §

Ammon experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / 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 Ammon UV Index data.

Average daily maximum UV levels by month for Ammon, 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 8 10 11 11 10 9 6 4 3

Detailed Monthly Weather Insights for Ammon, Idaho, United States

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