Rosthern No. 403 is among the driest of Canadian towns: 357 mm of rain and snow a year
January nights here settle around −20.7°C. Frost is common: about 203 nights a year drop below freezing, more than in 92% of Canadian towns. Of all months, June brings the most precipitation and February the least. Warm coats and heating bills mark the months from October to April, when means dip under 10°C.
ECCC publishes no normals for Rosthern No. 403 itself; the figures are those of Saskatoon Diefenbaker (Airport), 39 km south-west.
A year in Rosthern No. 403 at a glance
Each month’s typical high and low, in °C.
What stands out about Rosthern No. 403’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Saskatchewan beside it.
What a year in Rosthern No. 403 feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 203 days, 20°C on 105
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
About 63 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 91 cm of snow a 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 Rosthern No. 403
90% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
ECCC sums, over the year, how many degrees each day’s average falls short of 18°C. Homes here need more heating than 95% of Canadian towns.
Living with Rosthern No. 403’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Gardens get from about 19 May to 15 September without frost, around 117 days in all.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Jul and Aug.
Parks & trails →Plan for about 83 days a year with a wind chill below −20.
On some 22 days a year the humidex climbs past 30.
For the weather that does damage, from ice storms to floods, see Rosthern No. 403’s hazards page.
Flood & hazards →ECCC’s normals location: Saskatoon Diefenbaker (Airport)
ECCC builds the Saskatoon Diefenbaker (Airport) normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 39 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, 98 km |
How Rosthern No. 403 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
Nearby places read from a different ECCC location (places on Rosthern No. 403’s own would show the same figures). The nearest place to Rosthern No. 403 with figures is 41 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Rosthern No. 403 Saskatoon Diefenbaker (Airport) | 25.0°C | −20.7°C | 357 mm |
| Beardy's 97 and Okemasis 96 41 km · Prince Albert | 24.2°C 0.8°C cooler | −22.8°C 2.1°C colder | 432 mm |
Rosthern No. 403 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 February here can run warm or cold, its average moving by about 4.4°C; the steadiest month is June
March has the widest record range, −38.3°C in 2003 to 19.6°C in 2015; the tick on each bar is the month’s normal.
Where Rosthern No. 403’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Saskatoon Diefenbaker (Airport), the nearest location with a full year of 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: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Rosthern No. 403’s climate
How warm does Rosthern No. 403 get in summer?
Afternoons average 25.0°C in July, the warmest time of year.
How cold does Rosthern No. 403 get in winter?
At its coldest, in January, the normal low is −20.7°C.
How much rain and snow does Rosthern No. 403 get?
357 mm a year counting snow as water. The wettest month is June (75 mm); the driest, February (9 mm).
Are these figures for Rosthern No. 403 itself?
Not as such: Saskatoon Diefenbaker (Airport) is the nearest normals location, and Rosthern No. 403 has none.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Rosthern No. 403 →
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).