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Monthly climate in Lewiston, Utah, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Lewiston features a humid continental climate (Dfb).Temperatures typically range between -5 °C (23 °F) and 22 °C (71 °F) through the year, but rarely can drop to -24 °C (-10 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 636 mm (25.0 inches) and receives 107 rainy days on the 1 mm (0.04 inches) threshold annually.Lewiston enjoys an average of 3259 hours of sunshine throughout the year, and daylight varies from 9 hours 9 minutes to 15 hours 10 minutes per day.

Monthly average temperatures in Lewiston, Utah, United States §

The warmest months in Lewiston are June, July and August, with daily mean temperatures ranging from 17 to 22 °C (62 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -4 °C (23 - 25 °F) throughout the day. On average each year, Lewiston experiences 61 days above 25 °C (77.0 °F) and 163 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Lewiston, Utah, 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 7°C
(46°F)		 10°C
(50°F)		 18°C
(64°F)		 22°C
(71°F)		 28°C
(82°F)		 33°C
(91°F)		 33°C
(91°F)		 34°C
(94°F)		 32°C
(90°F)		 24°C
(75°F)		 19°C
(67°F)		 10°C
(50°F)
Mean maximum 5°C
(40°F)		 7°C
(44°F)		 14°C
(57°F)		 18°C
(65°F)		 24°C
(76°F)		 27°C
(80°F)		 32°C
(90°F)		 33°C
(91°F)		 31°C
(87°F)		 21°C
(70°F)		 14°C
(57°F)		 6°C
(43°F)
Average high -1°C
(30°F)		 -0°C
(32°F)		 6°C
(42°F)		 10°C
(50°F)		 16°C
(60°F)		 23°C
(74°F)		 29°C
(84°F)		 28°C
(82°F)		 22°C
(72°F)		 12°C
(54°F)		 6°C
(43°F)		 -1°C
(31°F)
Daily mean -5°C
(23°F)		 -4°C
(25°F)		 1°C
(34°F)		 4°C
(40°F)		 9°C
(49°F)		 17°C
(62°F)		 22°C
(71°F)		 20°C
(69°F)		 15°C
(59°F)		 6°C
(43°F)		 0°C
(33°F)		 -5°C
(23°F)
Average low -9°C
(16°F)		 -8°C
(18°F)		 -4°C
(26°F)		 -1°C
(30°F)		 3°C
(38°F)		 9°C
(48°F)		 14°C
(57°F)		 12°C
(55°F)		 7°C
(46°F)		 0°C
(32°F)		 -5°C
(24°F)		 -9°C
(16°F)
Mean minimum -19°C
(-2°F)		 -17°C
(2°F)		 -13°C
(9°F)		 -9°C
(17°F)		 -5°C
(23°F)		 1°C
(34°F)		 8°C
(46°F)		 7°C
(45°F)		 -0°C
(32°F)		 -10°C
(14°F)		 -13°C
(8°F)		 -17°C
(2°F)
Minimum -24°C
(-10°F)		 -20°C
(-4°F)		 -18°C
(-1°F)		 -12°C
(10°F)		 -7°C
(20°F)		 -2°C
(29°F)		 6°C
(43°F)		 3°C
(38°F)		 -2°C
(30°F)		 -17°C
(2°F)		 -16°C
(4°F)		 -19°C
(-2°F)

Compare climate in Lewiston with other places

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

Monthly average precipitation in Lewiston, Utah, United States §

Lewiston usually has the most precipitation in January, February and April, with an average of 12 rainy days and 78 mm (3.1 inches) of precipitation per month.The driest months in Lewiston are June, July and August. On average, 24 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Lewiston, Utah, 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) 68 (2.7) 89 (3.5) 63 (2.5) 78 (3.1) 66 (2.6) 31 (1.2) 17 (0.7) 23 (0.9) 36 (1.4) 49 (1.9) 56 (2.2) 59 (2.3)
Average precipitation days (≥ 1 mm) 10 15 11 12 13 5 4 4 5 8 9 11

Monthly sunshine hours in Lewiston, Utah, United States §

The sunniest months in Lewiston are June, July and August, when the sun shines an average of 12 hours 20 minutes a day.Least sunny months in Lewiston: January, February and December receive an average of 5 hours 19 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Lewiston, Utah, 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 130 185 261 283 338 381 393 359 306 254 195 168
Mean daily daylight hours 9h 30m 10h 35m 11h 58m 13h 23m 14h 34m 15h 10m 14h 50m 13h 46m 12h 25m 11h 0m 9h 47m 9h 9m

Solar UV radiation in Lewiston, Utah, United States §

Lewiston 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, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Lewiston UV Index data.

Average daily maximum UV levels by month for Lewiston, Utah, 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 5 3