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Monthly climate in Girdwood, Alaska, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Girdwood features a subarctic climate (Dfc). Temperatures typically range between -9 °C (16 °F) and 11 °C (53 °F) through the year, but rarely can drop to -27 °C (-17 °F) or can rise to as high as 26 °C (79 °F). The average annual precipitation amounts to about 2004 mm (78.9 inches) and receives 209 rainy days on the 1 mm (0.04 inches) threshold annually. Girdwood enjoys an average of 2217 hours of sunshine throughout the year, and daylight varies from 5 hours 41 minutes to 19 hours 3 minutes per day.

Monthly average temperatures in Girdwood, Alaska, United States §

The warmest months in Girdwood are June, July and August, with daily mean temperatures ranging from 8 to 11 °C (47 - 53 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -9 to -8 °C (16 - 19 °F) throughout the day. On average each year, Girdwood experiences 0 days above 25 °C (77.0 °F) and 207 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Girdwood, 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 2°C
(36°F)		 2°C
(35°F)		 5°C
(42°F)		 11°C
(53°F)		 16°C
(60°F)		 24°C
(75°F)		 26°C
(79°F)		 21°C
(71°F)		 16°C
(61°F)		 13°C
(56°F)		 3°C
(38°F)		 5°C
(41°F)
Mean maximum 2°C
(35°F)		 -1°C
(31°F)		 0°C
(33°F)		 8°C
(46°F)		 12°C
(54°F)		 17°C
(64°F)		 21°C
(71°F)		 21°C
(70°F)		 13°C
(56°F)		 8°C
(46°F)		 2°C
(36°F)		 2°C
(35°F)
Average high -7°C
(20°F)		 -6°C
(22°F)		 -4°C
(24°F)		 2°C
(35°F)		 5°C
(42°F)		 11°C
(53°F)		 15°C
(59°F)		 13°C
(56°F)		 9°C
(48°F)		 2°C
(36°F)		 -5°C
(23°F)		 -4°C
(25°F)
Daily mean -9°C
(16°F)		 -9°C
(17°F)		 -8°C
(19°F)		 -1°C
(30°F)		 3°C
(37°F)		 8°C
(47°F)		 11°C
(53°F)		 10°C
(50°F)		 6°C
(42°F)		 -0°C
(32°F)		 -7°C
(19°F)		 -6°C
(21°F)
Average low -12°C
(11°F)		 -12°C
(11°F)		 -11°C
(13°F)		 -4°C
(25°F)		 -0°C
(32°F)		 5°C
(41°F)		 8°C
(47°F)		 7°C
(45°F)		 3°C
(38°F)		 -3°C
(28°F)		 -10°C
(15°F)		 -9°C
(17°F)
Mean minimum -23°C
(-9°F)		 -21°C
(-6°F)		 -20°C
(-4°F)		 -11°C
(12°F)		 -4°C
(25°F)		 1°C
(34°F)		 4°C
(40°F)		 2°C
(37°F)		 -4°C
(25°F)		 -13°C
(10°F)		 -20°C
(-3°F)		 -18°C
(0°F)
Minimum -27°C
(-17°F)		 -25°C
(-13°F)		 -25°C
(-12°F)		 -19°C
(-2°F)		 -5°C
(22°F)		 -2°C
(29°F)		 3°C
(37°F)		 0°C
(33°F)		 -12°C
(11°F)		 -15°C
(4°F)		 -27°C
(-16°F)		 -24°C
(-10°F)

Compare climate in Girdwood with other places

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

Monthly average precipitation in Girdwood, Alaska, United States §

Girdwood usually has the most precipitation in October, November and December, with an average of 20 rainy days and 258 mm (10.2 inches) of precipitation per month. The driest months in Girdwood are February, June and July. On average, 110 mm (4.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Girdwood, 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) 165 (6.5) 115 (4.5) 131 (5.2) 115 (4.5) 142 (5.6) 107 (4.2) 109 (4.3) 156 (6.1) 192 (7.5) 281 (11.1) 224 (8.8) 268 (10.6)
Average precipitation days (≥ 1 mm) 13 14 12 14 19 21 17 20 19 21 16 23

Monthly sunshine hours in Girdwood, Alaska, United States §

The sunniest months in Girdwood are May, June and July, when the sun shines an average of 9 hours 33 minutes a day. Least sunny months in Girdwood: 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 Girdwood, 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 53 123 202 263 277 310 291 257 183 123 90 39
Mean daily daylight hours 6h 35m 9h 4m 11h 53m 14h 46m 17h 29m 19h 3m 18h 8m 15h 36m 12h 46m 9h 56m 7h 14m 5h 41m

Solar UV radiation in Girdwood, Alaska, United States §

Girdwood 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 Girdwood UV Index data.

Average daily maximum UV levels by month for Girdwood, 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 5 7 6 7 6 4 2 1 1

Detailed Monthly Weather Insights for Girdwood, Alaska, United States

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