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Monthly climate in Glenns Ferry, Idaho, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Glenns Ferry features a cold semi-arid climate (BSk). Temperatures typically range between -1 °C (31 °F) and 27 °C (81 °F) through the year, but rarely can drop to -25 °C (-12 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 335 mm (13.2 inches) and receives 67 rainy days on the 1 mm (0.04 inches) threshold annually. Glenns Ferry enjoys an average of 3317 hours of sunshine throughout the year, and daylight varies from 9 hours 3 minutes to 15 hours 17 minutes per day.

Monthly average temperatures in Glenns Ferry, Idaho, United States §

The warmest months in Glenns Ferry are June, July and August, with daily mean temperatures ranging from 21 to 27 °C (70 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 1 °C (31 - 34 °F) throughout the day. On average each year, Glenns Ferry experiences 96 days above 25 °C (77.0 °F) and 100 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Glenns Ferry, 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 13°C
(55°F)		 16°C
(61°F)		 25°C
(77°F)		 31°C
(88°F)		 36°C
(97°F)		 39°C
(102°F)		 40°C
(104°F)		 41°C
(106°F)		 39°C
(103°F)		 30°C
(87°F)		 22°C
(72°F)		 14°C
(57°F)
Mean maximum 8°C
(47°F)		 13°C
(56°F)		 21°C
(71°F)		 27°C
(82°F)		 32°C
(90°F)		 32°C
(91°F)		 39°C
(103°F)		 39°C
(103°F)		 37°C
(99°F)		 26°C
(79°F)		 18°C
(64°F)		 10°C
(51°F)
Average high 3°C
(37°F)		 5°C
(42°F)		 12°C
(55°F)		 16°C
(62°F)		 21°C
(71°F)		 28°C
(83°F)		 35°C
(94°F)		 33°C
(92°F)		 27°C
(80°F)		 17°C
(62°F)		 10°C
(50°F)		 3°C
(38°F)
Daily mean -1°C
(31°F)		 1°C
(34°F)		 7°C
(44°F)		 10°C
(51°F)		 15°C
(59°F)		 21°C
(70°F)		 27°C
(81°F)		 25°C
(78°F)		 19°C
(67°F)		 10°C
(51°F)		 5°C
(41°F)		 -0°C
(32°F)
Average low -4°C
(25°F)		 -3°C
(27°F)		 1°C
(35°F)		 4°C
(40°F)		 9°C
(48°F)		 13°C
(56°F)		 18°C
(65°F)		 17°C
(63°F)		 12°C
(53°F)		 4°C
(40°F)		 0°C
(33°F)		 -4°C
(25°F)
Mean minimum -14°C
(8°F)		 -11°C
(13°F)		 -6°C
(21°F)		 -3°C
(27°F)		 2°C
(35°F)		 6°C
(43°F)		 12°C
(54°F)		 11°C
(51°F)		 4°C
(39°F)		 -5°C
(23°F)		 -6°C
(21°F)		 -11°C
(12°F)
Minimum -25°C
(-12°F)		 -14°C
(7°F)		 -9°C
(16°F)		 -6°C
(22°F)		 -0°C
(32°F)		 4°C
(40°F)		 8°C
(47°F)		 8°C
(46°F)		 1°C
(34°F)		 -13°C
(9°F)		 -7°C
(19°F)		 -15°C
(6°F)

Compare climate in Glenns Ferry with other places

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

Monthly average precipitation in Glenns Ferry, Idaho, United States §

Glenns Ferry usually has the most precipitation in January, February and December, with an average of 9 rainy days and 47 mm (1.9 inches) of precipitation per month. The driest months in Glenns Ferry are July, August and September. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Glenns Ferry, 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) 51 (2.0) 52 (2.0) 39 (1.5) 27 (1.1) 33 (1.3) 13 (0.5) 2 (0.1) 5 (0.2) 11 (0.4) 26 (1.0) 38 (1.5) 39 (1.6)
Average precipitation days (≥ 1 mm) 9 11 9 7 6 2 0 1 2 4 7 9

Monthly sunshine hours in Glenns Ferry, Idaho, United States §

The sunniest months in Glenns Ferry are June, July and August, when the sun shines an average of 12 hours 24 minutes a day. Least sunny months in Glenns Ferry: January, February and December receive an average of 5 hours 24 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Glenns Ferry, 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 138 181 267 296 343 378 400 362 306 263 207 171
Mean daily daylight hours 9h 24m 10h 32m 11h 58m 13h 25m 14h 40m 15h 17m 14h 56m 13h 50m 12h 25m 10h 58m 9h 42m 9h 3m

Solar UV radiation in Glenns Ferry, Idaho, United States §

Glenns Ferry 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 Glenns Ferry UV Index data.

Average daily maximum UV levels by month for Glenns Ferry, 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 7 9 10 11 11 10 9 6 4 3

Detailed Monthly Weather Insights for Glenns Ferry, Idaho, United States

Discover in-depth weather details for every month in Glenns Ferry. 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 Glenns Ferry'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.