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Monthly climate in Ennis, Montana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Ennis features a humid continental climate (Dfb).Temperatures typically range between -8 °C (18 °F) and 18 °C (64 °F) through the year, but rarely can drop to -31 °C (-24 °F) or can rise to as high as 33 °C (91 °F).The average annual precipitation amounts to about 607 mm (23.9 inches) and receives 127 rainy days on the 1 mm (0.04 inches) threshold annually.Ennis enjoys an average of 3206 hours of sunshine throughout the year, and daylight varies from 8 hours 46 minutes to 15 hours 35 minutes per day.

Monthly average temperatures in Ennis, Montana, United States §

The warmest months in Ennis are June, July and August, with daily mean temperatures ranging from 13 to 18 °C (56 - 64 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -7 °C (18 - 20 °F) throughout the day. On average each year, Ennis experiences 40 days above 25 °C (77.0 °F) and 196 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ennis, Montana, 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
(41°F)		 7°C
(46°F)		 15°C
(59°F)		 18°C
(64°F)		 26°C
(79°F)		 31°C
(88°F)		 33°C
(91°F)		 32°C
(90°F)		 32°C
(89°F)		 23°C
(74°F)		 16°C
(62°F)		 11°C
(52°F)
Mean maximum 3°C
(37°F)		 6°C
(43°F)		 11°C
(52°F)		 16°C
(61°F)		 22°C
(72°F)		 24°C
(76°F)		 30°C
(87°F)		 30°C
(87°F)		 29°C
(84°F)		 19°C
(66°F)		 11°C
(51°F)		 6°C
(42°F)
Average high -3°C
(27°F)		 -4°C
(26°F)		 3°C
(37°F)		 6°C
(44°F)		 13°C
(55°F)		 20°C
(68°F)		 26°C
(79°F)		 25°C
(77°F)		 19°C
(66°F)		 8°C
(47°F)		 2°C
(37°F)		 -3°C
(28°F)
Daily mean -7°C
(20°F)		 -8°C
(18°F)		 -2°C
(29°F)		 1°C
(34°F)		 7°C
(45°F)		 13°C
(56°F)		 18°C
(64°F)		 17°C
(62°F)		 12°C
(53°F)		 2°C
(36°F)		 -3°C
(27°F)		 -7°C
(20°F)
Average low -11°C
(13°F)		 -12°C
(11°F)		 -7°C
(20°F)		 -5°C
(24°F)		 1°C
(33°F)		 6°C
(43°F)		 9°C
(49°F)		 9°C
(48°F)		 4°C
(40°F)		 -3°C
(26°F)		 -8°C
(18°F)		 -11°C
(12°F)
Mean minimum -24°C
(-12°F)		 -25°C
(-14°F)		 -18°C
(0°F)		 -15°C
(6°F)		 -7°C
(19°F)		 -1°C
(30°F)		 3°C
(38°F)		 4°C
(39°F)		 -4°C
(25°F)		 -17°C
(2°F)		 -18°C
(-0°F)		 -23°C
(-9°F)
Minimum -28°C
(-18°F)		 -31°C
(-24°F)		 -28°C
(-19°F)		 -20°C
(-4°F)		 -12°C
(11°F)		 -4°C
(24°F)		 -1°C
(30°F)		 0°C
(33°F)		 -6°C
(21°F)		 -28°C
(-19°F)		 -21°C
(-6°F)		 -26°C
(-15°F)

Compare climate in Ennis with other places

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

Monthly average precipitation in Ennis, Montana, United States §

Ennis usually has the most precipitation in April, May and June, with an average of 14 rainy days and 78 mm (3.1 inches) of precipitation per month.The driest months in Ennis are January, July and August. On average, 29 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ennis, Montana, 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) 30 (1.2) 56 (2.2) 45 (1.8) 69 (2.7) 82 (3.2) 82 (3.2) 26 (1.0) 31 (1.2) 46 (1.8) 62 (2.5) 41 (1.6) 38 (1.5)
Average precipitation days (≥ 1 mm) 9 15 10 14 16 12 8 7 6 11 10 9

Monthly sunshine hours in Ennis, Montana, United States §

The sunniest months in Ennis are June, July and August, when the sun shines an average of 11 hours 58 minutes a day.Least sunny months in Ennis: January, February and December receive an average of 5 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ennis, Montana, 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 142 174 267 283 325 356 393 351 286 247 194 182
Mean daily daylight hours 9h 10m 10h 24m 11h 57m 13h 33m 14h 54m 15h 35m 15h 12m 13h 59m 12h 27m 10h 52m 9h 29m 8h 46m

Solar UV radiation in Ennis, Montana, United States §

Ennis 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 Low / 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 Ennis UV Index data.

Average daily maximum UV levels by month for Ennis, Montana, 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 11 12 11 10 9 6 4 2