Last updated: March 2, 2024
Under the Köppen–Geiger climate classification Rocky Mountain House features a subarctic climate (Dfc). Temperatures typically range between -11 °C (13 °F) and 16 °C (60 °F) through the year, but rarely can drop to -40 °C (-40 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 652 mm (25.7 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually. Rocky Mountain House enjoys an average of 2884 hours of sunshine throughout the year, and daylight varies from 7 hours 45 minutes to 16 hours 42 minutes per day.
The warmest months in Rocky Mountain House are June, July and August, with daily mean temperatures ranging from 14 to 16 °C (57 - 60 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -11 to -7 °C (13 - 19 °F) throughout the day. On average each year, Rocky Mountain House experiences 18 days above 25 °C (77.0 °F) and 188 days below 0 °C (32.0 °F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum | 10°C (50°F) |
12°C (55°F) |
15°C (60°F) |
25°C (78°F) |
27°C (81°F) |
35°C (95°F) |
35°C (96°F) |
34°C (94°F) |
30°C (86°F) |
24°C (75°F) |
18°C (65°F) |
12°C (54°F) |
| Mean maximum | 8°C (47°F) |
9°C (48°F) |
12°C (53°F) |
19°C (67°F) |
25°C (77°F) |
26°C (79°F) |
31°C (87°F) |
31°C (88°F) |
25°C (78°F) |
21°C (70°F) |
13°C (56°F) |
9°C (48°F) |
| Average high | -3°C (27°F) |
-5°C (23°F) |
2°C (36°F) |
8°C (46°F) |
16°C (61°F) |
19°C (67°F) |
22°C (72°F) |
22°C (71°F) |
16°C (60°F) |
9°C (49°F) |
3°C (37°F) |
-3°C (28°F) |
| Daily mean | -8°C (18°F) |
-11°C (13°F) |
-4°C (25°F) |
2°C (35°F) |
9°C (49°F) |
14°C (57°F) |
16°C (60°F) |
15°C (59°F) |
10°C (49°F) |
3°C (37°F) |
-3°C (28°F) |
-7°C (19°F) |
| Average low | -13°C (9°F) |
-16°C (3°F) |
-9°C (16°F) |
-4°C (25°F) |
3°C (37°F) |
7°C (45°F) |
9°C (49°F) |
8°C (47°F) |
4°C (40°F) |
-2°C (28°F) |
-7°C (19°F) |
-12°C (11°F) |
| Mean minimum | -31°C (-23°F) |
-32°C (-25°F) |
-27°C (-16°F) |
-14°C (8°F) |
-3°C (26°F) |
2°C (36°F) |
5°C (41°F) |
2°C (37°F) |
-2°C (28°F) |
-14°C (7°F) |
-19°C (-2°F) |
-27°C (-16°F) |
| Minimum | -40°C (-39°F) |
-37°C (-34°F) |
-40°C (-40°F) |
-23°C (-9°F) |
-7°C (21°F) |
1°C (34°F) |
4°C (40°F) |
1°C (33°F) |
-8°C (18°F) |
-24°C (-11°F) |
-23°C (-10°F) |
-40°C (-39°F) |
Compare temperature, precipitation, sunshine, UV index in Rocky Mountain House, Alberta, Canada with other places around the world.
Rocky Mountain House usually has the most precipitation in June, July and August, with an average of 14 rainy days and 97 mm (3.8 inches) of precipitation per month. The driest months in Rocky Mountain House are January, February and December. On average, 22 mm (0.9 inches) of precipitation falls during these months.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average precipitation mm (inches) | 12 (0.5) | 26 (1.0) | 33 (1.3) | 47 (1.8) | 70 (2.8) | 108 (4.3) | 112 (4.4) | 72 (2.8) | 71 (2.8) | 37 (1.4) | 37 (1.4) | 28 (1.1) |
| Average precipitation days (≥ 1 mm) | 4 | 8 | 8 | 11 | 12 | 16 | 17 | 11 | 11 | 8 | 9 | 8 |
The sunniest months in Rocky Mountain House are May, June and July, when the sun shines an average of 11 hours 1 minutes a day. Least sunny months in Rocky Mountain House: January, November and December receive an average of 4 hours 37 minutes of sunshine daily.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean monthly sunshine hours | 122 | 160 | 242 | 281 | 321 | 335 | 356 | 318 | 232 | 209 | 153 | 149 |
| Mean daily daylight hours | 8h 17m | 9h 55m | 11h 56m | 13h 59m | 15h 46m | 16h 42m | 16h 11m | 14h 33m | 12h 34m | 10h 32m | 8h 43m | 7h 45m |
Rocky Mountain House experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 8, which corresponds to the Very 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 2. For more detailed information, check out our hourly Rocky Mountain House UV Index data.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV Index (month maximum) | 2 | 3 | 4 | 6 | 7 | 8 | 8 | 8 | 6 | 4 | 2 | 1 |
Discover in-depth weather details for every month in Rocky Mountain House. 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 Rocky Mountain House'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.