Photo: Unknown author Unknown author · Public domainStony Plain is drier than 90% of Canadian towns: 423 mm of rain and snow a year
On a normal July day the thermometer tops out near 23.5°C. Some 38°C separates winter nights from summer afternoons. By July afternoons alone, it runs cooler than 80% of Canadian towns. Frost comes on about 179 days a year, so leave time to clear the car.
No ECCC station in Stony Plain has 1991–2020 normals; the page reads Edmonton (City), 32 km east, instead.
A year in Stony Plain at a glance
Each month’s typical high and low, in °C.
What stands out about Stony Plain’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Alberta beside it.
What a year in Stony Plain feels like
Each season’s and each month’s usual high and low, 1991–2020.
179 frost days and 90 days above 20°C a year
From September to May frost is routine, and in January it comes on almost every night. Some 24 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
423 mm of precipitation in a typical year
July brings the most rain and snow; February, the least. On about 72 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 124 cm in a normal year
Expect snow from October to May, with about 26 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Stony Plain
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Warm days count for nothing; each colder day adds how far its mean sits below 18°C. Over a year, a home here needs more heating than 76% of Canadian towns.
Living with Stony Plain’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
Between the last frost, near 7 May, and the first, near 25 September, lie about 141 frost-free days.
For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →A wind chill below −20 is part of about 50 days a year here.
Summer brings about 11 days when the humidex passes 30.
Extremes don’t show in averages: floods, wildfire smoke and ice storms are on Stony Plain’s hazards page.
Flood & hazards →ECCC’s normals location: Edmonton (City)
Behind the 1991–2020 normals for Edmonton (City) are 3 stations, which ECCC combines into one record.
| Distance from the town | 32 km east |
| Station altitude | 671 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −37.8°C |
| Hottest reading, 1991–2020 | 34.9°C |
| Average wind | 12.2 km/h on average, most often from the west |
| Next-nearest location | Edmonton (Airport), 36 km |
How Stony Plain compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Alberta.
Nearby towns’ climate
Places around Stony Plain whose figures come from another normals location. Distances here run 26–41 km: that is how far the nearest places with figures are from Stony Plain.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Stony Plain Edmonton (City) | 23.5°C | −14.7°C | 423 mm |
| Devon 26 km · Edmonton (Airport) | 23.0°C 0.5°C cooler | −18.1°C 3.4°C colder | 434 mm |
| Wabamun 133A 28 km · Breton | 23.1°C about the same | −15.2°C 0.5°C colder | 499 mm |
| Lac Ste. Anne County 41 km · Campsie | 23.5°C about the same | −19.0°C 4.3°C colder | 466 mm |
Stony Plain weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.8°C | −14.7°C | −10.3°C | 20 mm | 26 cm |
| February | −3.0°C | −12.7°C | −7.9°C | 12 mm | 13 cm |
| March | 1.7°C | −7.8°C | −3.1°C | 17 mm | 19 cm |
| April | 10.4°C | −0.7°C | 4.9°C | 29 mm | 15 cm |
| May | 17.5°C | 5.6°C | 11.6°C | 44 mm | 5 cm |
| June | 21.0°C | 10.2°C | 15.6°C | 70 mm | 0 cm |
| July | 23.5°C | 12.6°C | 18.1°C | 83 mm | 0 cm |
| August | 22.6°C | 11.3°C | 17.0°C | 61 mm | under 1 cm |
| September | 17.6°C | 6.2°C | 11.9°C | 39 mm | 1 cm |
| October | 10.0°C | −0.1°C | 5.0°C | 21 mm | 11 cm |
| November | 0.6°C | −7.5°C | −3.5°C | 18 mm | 20 cm |
| December | −4.7°C | −13.2°C | −9.0°C | 12 mm | 15 cm |
| Year | 9.3°C | −0.9°C | 4.2°C | 423 mm | 124 cm |
March has run from −34.0°C to 23.9°C in thirty years
The month to count on least is February: one year in three its average strays more than 4.2°C from −7.9°C. June moves least, typically by 1.0°C.
Where Stony Plain’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Edmonton (City) (the closest location with all twelve months of temperatures).
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- Not on this page: sunshine, not in ECCC’s 1991–2020 normals, and the effect of the town’s height, for which there is no figure.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Stony Plain’s climate
How warm does Stony Plain get in summer?
At its warmest, in July, the normal high is 23.5°C.
How cold does Stony Plain get in winter?
The coldest nights come in January, averaging −14.7°C.
How much rain and snow does Stony Plain get?
Around 423 mm a year in all, from 83 mm in July down to 12 mm in February.
Are these figures for Stony Plain itself?
No, they come from Edmonton (City); ECCC keeps no 1991–2020 normals in Stony Plain itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Stony Plain →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).