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Monthly climate in Sterling, Alaska, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sterling features a subarctic climate (Dfc).Temperatures typically range between -7 °C (19 °F) and 16 °C (61 °F) through the year, but rarely can drop to -28 °C (-18 °F) or can rise to as high as 31 °C (88 °F).The average annual precipitation amounts to about 926 mm (36.4 inches) and receives 159 rainy days on the 1 mm (0.04 inches) threshold annually.Sterling enjoys an average of 2256 hours of sunshine throughout the year, and daylight varies from 5 hours 49 minutes to 18 hours 54 minutes per day.

Monthly average temperatures in Sterling, Alaska, United States §

The warmest months in Sterling are June, July and August, with daily mean temperatures ranging from 13 to 16 °C (56 - 61 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -3 °C (19 - 26 °F) throughout the day. On average each year, Sterling experiences 3 days above 25 °C (77.0 °F) and 147 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sterling, Alaska, 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 8°C
(46°F)		 7°C
(45°F)		 11°C
(53°F)		 17°C
(63°F)		 23°C
(74°F)		 28°C
(82°F)		 31°C
(88°F)		 26°C
(80°F)		 20°C
(69°F)		 16°C
(61°F)		 10°C
(50°F)		 9°C
(48°F)
Mean maximum 7°C
(44°F)		 5°C
(41°F)		 7°C
(44°F)		 14°C
(58°F)		 20°C
(69°F)		 23°C
(73°F)		 26°C
(80°F)		 24°C
(76°F)		 19°C
(66°F)		 14°C
(57°F)		 7°C
(45°F)		 7°C
(46°F)
Average high -5°C
(24°F)		 -1°C
(30°F)		 1°C
(35°F)		 9°C
(48°F)		 14°C
(57°F)		 18°C
(64°F)		 20°C
(68°F)		 19°C
(66°F)		 14°C
(58°F)		 8°C
(47°F)		 0°C
(33°F)		 -1°C
(31°F)
Daily mean -7°C
(19°F)		 -5°C
(23°F)		 -3°C
(27°F)		 4°C
(39°F)		 10°C
(49°F)		 13°C
(56°F)		 16°C
(61°F)		 15°C
(59°F)		 11°C
(51°F)		 5°C
(42°F)		 -2°C
(28°F)		 -3°C
(26°F)
Average low -10°C
(14°F)		 -8°C
(17°F)		 -7°C
(20°F)		 -1°C
(31°F)		 5°C
(41°F)		 9°C
(49°F)		 12°C
(54°F)		 11°C
(52°F)		 7°C
(46°F)		 2°C
(37°F)		 -5°C
(23°F)		 -7°C
(21°F)
Mean minimum -23°C
(-8°F)		 -19°C
(-1°F)		 -16°C
(4°F)		 -8°C
(17°F)		 1°C
(33°F)		 6°C
(42°F)		 8°C
(47°F)		 6°C
(44°F)		 1°C
(34°F)		 -5°C
(23°F)		 -15°C
(6°F)		 -16°C
(3°F)
Minimum -28°C
(-18°F)		 -23°C
(-9°F)		 -20°C
(-4°F)		 -15°C
(6°F)		 -1°C
(30°F)		 4°C
(40°F)		 7°C
(46°F)		 6°C
(42°F)		 -3°C
(26°F)		 -7°C
(19°F)		 -25°C
(-13°F)		 -23°C
(-10°F)

Compare climate in Sterling with other places

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

Monthly average precipitation in Sterling, Alaska, United States §

Sterling usually has the most precipitation in September, October and December, with an average of 16 rainy days and 117 mm (4.6 inches) of precipitation per month.The driest months in Sterling are February, March and April. On average, 42 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sterling, Alaska, 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) 53 (2.1) 50 (1.9) 39 (1.5) 36 (1.4) 67 (2.6) 66 (2.6) 75 (2.9) 98 (3.9) 113 (4.4) 127 (5.0) 91 (3.6) 110 (4.3)
Average precipitation days (≥ 1 mm) 10 10 9 11 16 14 13 14 16 17 13 16

Monthly sunshine hours in Sterling, Alaska, United States §

The sunniest months in Sterling are June, July and August, when the sun shines an average of 9 hours 48 minutes a day.Least sunny months in Sterling: January, November and December receive an average of 1 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sterling, Alaska, 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 56 120 216 251 263 320 298 283 194 123 92 35
Mean daily daylight hours 6h 41m 9h 7m 11h 54m 14h 44m 17h 22m 18h 54m 18h 1m 15h 32m 12h 46m 9h 58m 7h 20m 5h 49m

Solar UV radiation in Sterling, Alaska, United States §

Sterling experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 6 - 7, which corresponds to the High category of sun exposure.January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Sterling UV Index data.

Average daily maximum UV levels by month for Sterling, Alaska, 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) 1 2 3 4 6 6 7 6 4 2 1 1