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Monthly climate in Jerome, Idaho, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Jerome features a cold semi-arid climate (BSk).Temperatures typically range between 0 °C (31 °F) and 27 °C (81 °F) through the year, but rarely can drop to -26 °C (-14 °F) or can rise to as high as 42 °C (107 °F).The average annual precipitation amounts to about 291 mm (11.5 inches) and receives 63 rainy days on the 1 mm (0.04 inches) threshold annually.Jerome enjoys an average of 3347 hours of sunshine throughout the year, and daylight varies from 9 hours 4 minutes to 15 hours 15 minutes per day.

Monthly average temperatures in Jerome, Idaho, United States §

The warmest months in Jerome are June, July and August, with daily mean temperatures ranging from 22 to 27 °C (71 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (31 - 35 °F) throughout the day. On average each year, Jerome experiences 102 days above 25 °C (77.0 °F) and 97 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Jerome, 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 16°C
(61°F)		 18°C
(64°F)		 26°C
(79°F)		 32°C
(90°F)		 37°C
(98°F)		 40°C
(104°F)		 40°C
(105°F)		 42°C
(107°F)		 40°C
(104°F)		 31°C
(87°F)		 23°C
(74°F)		 16°C
(61°F)
Mean maximum 10°C
(50°F)		 15°C
(59°F)		 23°C
(73°F)		 29°C
(84°F)		 33°C
(92°F)		 33°C
(92°F)		 40°C
(104°F)		 40°C
(104°F)		 37°C
(100°F)		 27°C
(81°F)		 19°C
(66°F)		 12°C
(54°F)
Average high 4°C
(39°F)		 7°C
(44°F)		 14°C
(57°F)		 17°C
(64°F)		 22°C
(73°F)		 29°C
(84°F)		 35°C
(95°F)		 33°C
(92°F)		 27°C
(81°F)		 17°C
(64°F)		 11°C
(52°F)		 4°C
(40°F)
Daily mean -0°C
(31°F)		 2°C
(35°F)		 7°C
(45°F)		 11°C
(52°F)		 16°C
(60°F)		 22°C
(71°F)		 27°C
(81°F)		 25°C
(78°F)		 19°C
(67°F)		 11°C
(51°F)		 5°C
(41°F)		 0°C
(33°F)
Average low -4°C
(25°F)		 -2°C
(28°F)		 2°C
(35°F)		 4°C
(40°F)		 9°C
(48°F)		 14°C
(57°F)		 18°C
(65°F)		 17°C
(62°F)		 11°C
(53°F)		 4°C
(40°F)		 0°C
(32°F)		 -3°C
(26°F)
Mean minimum -13°C
(9°F)		 -10°C
(14°F)		 -5°C
(24°F)		 -3°C
(27°F)		 2°C
(35°F)		 6°C
(43°F)		 12°C
(53°F)		 10°C
(51°F)		 4°C
(39°F)		 -5°C
(23°F)		 -7°C
(20°F)		 -9°C
(16°F)
Minimum -26°C
(-14°F)		 -13°C
(9°F)		 -7°C
(20°F)		 -5°C
(23°F)		 -0°C
(32°F)		 5°C
(41°F)		 9°C
(48°F)		 7°C
(44°F)		 2°C
(36°F)		 -12°C
(11°F)		 -8°C
(17°F)		 -13°C
(8°F)

Compare climate in Jerome with other places

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

Monthly average precipitation in Jerome, Idaho, United States §

Jerome usually has the most precipitation in January, February and December, with an average of 8 rainy days and 41 mm (1.6 inches) of precipitation per month.The driest months in Jerome are June, July and August. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Jerome, 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) 46 (1.8) 34 (1.4) 23 (0.9) 31 (1.2) 11 (0.4) 3 (0.1) 5 (0.2) 12 (0.5) 22 (0.9) 29 (1.1) 36 (1.4)
Average precipitation days (≥ 1 mm) 8 10 8 6 7 2 1 1 2 4 6 8

Monthly sunshine hours in Jerome, Idaho, United States §

The sunniest months in Jerome are June, July and August, when the sun shines an average of 12 hours 19 minutes a day.Least sunny months in Jerome: January, February and December receive an average of 5 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Jerome, 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 142 189 271 298 344 381 394 358 307 266 212 179
Mean daily daylight hours 9h 26m 10h 33m 11h 58m 13h 25m 14h 38m 15h 15m 14h 55m 13h 49m 12h 25m 10h 59m 9h 43m 9h 4m

Solar UV radiation in Jerome, Idaho, United States §

Jerome 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 Jerome UV Index data.

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