Photo: Canadian2006 · CC BY-SA 3.0Hardly any Canadian towns collect less precipitation than Rosthern: 357 mm a year
July afternoons average 25.0°C. The wettest month is June; the driest is February. Frosty nights outnumber those of 92% of Canadian towns. An umbrella or a shovel earns its place on about 63 days a year with 1 mm or more.
The nearest ECCC normals location is Saskatoon Diefenbaker (Airport), 61 km south-west: at that distance its figures describe the region more than Rosthern itself.
A year in Rosthern at a glance
Each month’s typical high and low, in °C.
What stands out about Rosthern’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Saskatchewan beside it.
What a year in Rosthern 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
Frost comes from September to May; in January almost every night freezes. Deep cold, under −20°C, comes on about 49 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 357 mm of rain and snow a year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 91 cm of snow a year
The snow season runs October to May; January brings the most, about 20 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Rosthern
90% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Each day the mean sits under 18°C adds its shortfall; a year’s total is its heating degree days. A house here needs more heating than 95% of Canadian towns.
Living with Rosthern’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
A normal year gives the garden about 117 frost-free days, roughly 19 May to 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 →Wind chill falls below −20 on about 83 days a year: cover skin and dress in layers.
The air feels heavier than 30 on the humidex for about 22 days a year.
The normals describe a typical year, not its worst days; the hazards page covers Rosthern’s.
Flood & hazards →ECCC’s normals location: Saskatoon Diefenbaker (Airport)
Saskatoon Diefenbaker (Airport) is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 61 km south-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 | Prince Albert, 76 km |
How Rosthern compares
Placed among 2,611 Canadian towns and neighbourhoods of 2,500+, each on its nearest normals location; each dot is another location used in Saskatchewan.
Nearby towns’ climate
Places around Rosthern whose figures come from another normals location. The nearest place to Rosthern with figures is 19 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Rosthern Saskatoon Diefenbaker (Airport) | 25.0°C | −20.7°C | 357 mm |
| Beardy's 97 and Okemasis 96 19 km · Prince Albert | 24.2°C 0.8°C cooler | −22.8°C 2.1°C colder | 432 mm |
Rosthern weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| 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 Rosthern’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Saskatoon Diefenbaker (Airport), 1991–2020.
- 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, absent from every 1991–2020 location, and an altitude correction, for want of the town’s own elevation.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Rosthern’s climate
How warm does Rosthern get in summer?
At its warmest, in July, the normal high is 25.0°C.
How cold does Rosthern get in winter?
The year’s coldest nights belong to January, at about −20.7°C.
How much rain and snow does Rosthern get?
Precipitation totals 357 mm a year, with June the wettest month (75 mm) and February the driest (9 mm).
Are these figures for Rosthern itself?
They are the figures for Saskatoon Diefenbaker (Airport), which read better as the region’s climate than Rosthern’s own.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Rosthern →
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).