Hardly any Canadian towns collect less precipitation than Caswell Hill: 357 mm a year
In July the day’s top temperature is typically 25.0°C. By frosts alone, it ranks colder than 92% of Canadian towns. The seasons are far apart: from a winter night to a summer afternoon the average spans 46°C. Expect about 203 frosty starts a year, days when the air falls to freezing.
Environment and Climate Change Canada’s 1991–2020 normals at its Saskatoon Diefenbaker (Airport) station, 4.6 km north-west.
A year in Caswell Hill at a glance
Each month’s typical high and low, in °C.
What stands out about Caswell Hill’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Saskatchewan beside it.
What a year in Caswell Hill feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
203 frost days and 105 days above 20°C a year
The frost season runs September to May, and January freezes nearly every night. On about 49 nights a year the air falls below −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
357 mm of precipitation in a typical year
June brings the most rain and snow; February, the least. On about 63 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
91 cm of snow in a typical year
Expect snow from October to May, with about 20 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 Caswell Hill
90% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
A day averaging 10 degrees under 18°C adds 10 to the total; warm days add nothing. That means homes here need more heating than 95% of Canadian towns.
Living with Caswell Hill’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
About 117 days a year pass without frost, from an average last frost of 19 May to a first of 15 September.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to Jun, Jul and Aug.
Parks & trails →About 83 days a year bring a wind chill under −20, when bare skin chills fast.
Humid summer days, the humidex above 30, number about 22 a year.
A typical year is calm by definition; Caswell Hill’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: Saskatoon Diefenbaker (Airport)
Behind the 1991–2020 normals for Saskatoon Diefenbaker (Airport) are 3 stations, which ECCC combines into one record.
| Distance from the town | 4.6 km north-west |
| Station altitude | 504 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −44.9°C |
| Hottest reading, 1991–2020 | 38.6°C |
| Average wind | 15.3 km/h on average, most often from the north-west |
| Next-nearest location | Watrous, 98 km |
How Caswell Hill 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 Saskatchewan.
Nearby towns’ climate
Places around Caswell Hill whose figures come from another normals location. No closer places have figures: these lie 77–97 km from Caswell Hill.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Caswell Hill Saskatoon Diefenbaker (Airport) | 25.0°C | −20.7°C | 357 mm |
| Outlook 77 km · Rock Point | 25.2°C about the same | −16.9°C 3.8°C milder | 418 mm |
| Beardy's 97 and Okemasis 96 82 km · Prince Albert | 24.2°C 0.8°C cooler | −22.8°C 2.1°C colder | 432 mm |
| Biggar 90 km · Rosetown | 25.2°C about the same | −19.9°C 0.8°C milder | 338 mm |
Caswell Hill 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 | −10.0°C | −20.7°C | −15.4°C | 14 mm | 20 cm |
| February | −7.9°C | −18.9°C | −13.4°C | 9 mm | 11 cm |
| March | −0.7°C | −11.4°C | −6.1°C | 14 mm | 14 cm |
| April | 10.5°C | −2.6°C | 3.9°C | 23 mm | 8 cm |
| May | 18.3°C | 3.4°C | 10.9°C | 42 mm | 1 cm |
| June | 22.1°C | 9.0°C | 15.6°C | 75 mm | 0 cm |
| July | 25.0°C | 11.5°C | 18.3°C | 59 mm | 0 cm |
| August | 24.8°C | 10.0°C | 17.4°C | 43 mm | 0 cm |
| September | 19.1°C | 4.7°C | 11.9°C | 32 mm | under 1 cm |
| October | 9.9°C | −2.4°C | 3.7°C | 21 mm | 7 cm |
| November | −0.7°C | −10.4°C | −5.6°C | 14 mm | 13 cm |
| December | −8.0°C | −18.0°C | −13.0°C | 12 mm | 17 cm |
| Year | 8.5°C | −3.8°C | 2.4°C | 357 mm | 91 cm |
A March here can run from −38.3°C to 19.6°C
Two years in three, February’s average falls within 4.4°C of its normal of −13.4°C; June keeps to within 1.1°C.
Where Caswell Hill’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Saskatoon Diefenbaker (Airport): the nearest of its locations with every month’s temperatures.
- Comparisons: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Caswell Hill’s climate
How warm does Caswell Hill get in summer?
On a normal day in July the thermometer climbs to 25.0°C, the warmest of the year.
How cold does Caswell Hill get in winter?
Of all twelve months, January has the coldest nights, about −20.7°C.
How much rain and snow does Caswell Hill get?
Precipitation totals 357 mm a year, with June the wettest month (75 mm) and February the driest (9 mm).
Are these figures for Caswell Hill itself?
Almost: ECCC’s Saskatoon Diefenbaker (Airport) location, which gives these figures, lies a short way outside Caswell Hill.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Caswell Hill →
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).