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Monthly climate in Hailey, Idaho, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Hailey features a humid continental climate (Dsb). Temperatures typically range between -7 °C (20 °F) and 20 °C (68 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 471 mm (18.5 inches) and receives 88 rainy days on the 1 mm (0.04 inches) threshold annually. Hailey enjoys an average of 3373 hours of sunshine throughout the year, and daylight varies from 8 hours 59 minutes to 15 hours 20 minutes per day.

Monthly average temperatures in Hailey, Idaho, United States §

The warmest months in Hailey are June, July and August, with daily mean temperatures ranging from 15 to 20 °C (58 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -6 °C (20 - 22 °F) throughout the day. On average each year, Hailey experiences 51 days above 25 °C (77.0 °F) and 186 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hailey, 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 5°C
(42°F)		 9°C
(48°F)		 15°C
(60°F)		 21°C
(70°F)		 28°C
(83°F)		 31°C
(88°F)		 32°C
(90°F)		 34°C
(93°F)		 32°C
(91°F)		 23°C
(74°F)		 16°C
(61°F)		 10°C
(51°F)
Mean maximum 2°C
(36°F)		 5°C
(42°F)		 11°C
(51°F)		 18°C
(64°F)		 23°C
(74°F)		 25°C
(77°F)		 31°C
(89°F)		 32°C
(90°F)		 30°C
(86°F)		 19°C
(67°F)		 12°C
(54°F)		 5°C
(41°F)
Average high -3°C
(27°F)		 -1°C
(30°F)		 4°C
(39°F)		 9°C
(48°F)		 14°C
(58°F)		 21°C
(71°F)		 28°C
(82°F)		 26°C
(80°F)		 21°C
(70°F)		 11°C
(53°F)		 5°C
(41°F)		 -2°C
(28°F)
Daily mean -7°C
(20°F)		 -6°C
(22°F)		 -1°C
(30°F)		 3°C
(38°F)		 8°C
(47°F)		 15°C
(58°F)		 20°C
(68°F)		 19°C
(66°F)		 13°C
(56°F)		 5°C
(41°F)		 -1°C
(30°F)		 -7°C
(20°F)
Average low -11°C
(12°F)		 -10°C
(14°F)		 -6°C
(21°F)		 -3°C
(27°F)		 2°C
(35°F)		 7°C
(44°F)		 11°C
(51°F)		 10°C
(50°F)		 5°C
(42°F)		 -1°C
(30°F)		 -6°C
(21°F)		 -12°C
(11°F)
Mean minimum -20°C
(-4°F)		 -19°C
(-1°F)		 -15°C
(5°F)		 -10°C
(14°F)		 -5°C
(23°F)		 0°C
(33°F)		 5°C
(42°F)		 4°C
(40°F)		 -2°C
(29°F)		 -9°C
(15°F)		 -15°C
(5°F)		 -22°C
(-7°F)
Minimum -25°C
(-13°F)		 -21°C
(-6°F)		 -20°C
(-3°F)		 -14°C
(7°F)		 -7°C
(19°F)		 -2°C
(29°F)		 3°C
(38°F)		 1°C
(34°F)		 -6°C
(21°F)		 -15°C
(6°F)		 -20°C
(-3°F)		 -25°C
(-13°F)

Compare climate in Hailey with other places

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

Monthly average precipitation in Hailey, Idaho, United States §

Hailey usually has the most precipitation in January, February and May, with an average of 10 rainy days and 63 mm (2.5 inches) of precipitation per month. The driest months in Hailey are July, August and September. On average, 14 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hailey, 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) 58 (2.3) 80 (3.1) 49 (1.9) 43 (1.7) 52 (2.0) 25 (1.0) 5 (0.2) 17 (0.7) 21 (0.8) 34 (1.3) 43 (1.7) 45 (1.8)
Average precipitation days (≥ 1 mm) 9 11 10 10 10 6 1 4 4 6 8 9

Monthly sunshine hours in Hailey, Idaho, United States §

The sunniest months in Hailey are June, July and August, when the sun shines an average of 12 hours 30 minutes a day. Least sunny months in Hailey: January, February and December receive an average of 5 hours 35 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hailey, 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 142 187 273 307 352 384 401 364 306 264 211 178
Mean daily daylight hours 9h 21m 10h 31m 11h 58m 13h 27m 14h 43m 15h 20m 14h 59m 13h 52m 12h 26m 10h 57m 9h 39m 8h 59m

Solar UV radiation in Hailey, Idaho, United States §

Hailey experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 12, which corresponds to the 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 Hailey UV Index data.

Average daily maximum UV levels by month for Hailey, 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 8 9 11 12 11 10 9 6 4 3

Detailed Monthly Weather Insights for Hailey, Idaho, United States

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