Photo: Timkal · CC BY-SA 3.0St. Theresa Point has some of the coldest winter nights among Canadian towns
July afternoons average 23.1°C. The year is lopsided: July gets about 4.9 times what February does. Summers stay cool: July afternoons here are cooler than in 88% of Canadian towns. The furnace earns its keep from October to May, the months that average under 10°C.
Borrowed figures: St. Theresa Point has no normals station, so these come from Island Lake, 20 km north-east.
A year in St. Theresa Point at a glance
Each month’s typical high and low, in °C.
What stands out about St. Theresa Point’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Manitoba beside it.
What a year in St. Theresa Point feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 206 days, 20°C on 70
The frost season runs September to May, and January freezes nearly every night. Some 81 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
About 567 mm of rain and snow a year
8th wettest of 190 towns of 2,500+ in Manitoba. About 94 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 177 cm of snow a year
Snow falls from October to May, most of all in November (about 31 cm). 6th snowiest of 188 towns of 2,500+ in Manitoba.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in St. Theresa Point
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Degree days add up how far each day’s mean temperature falls below 18°C over a year. In heating terms, homes need more heating than almost every Canadian town.
Living with St. Theresa Point’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Between the last frost, near 24 May, and the first, near 29 September, lie about 127 frost-free days.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul and Aug.
Parks & trails →Plan for about 109 days a year with a wind chill below −20.
Muggy heat with a humidex over 30 arrives on about 13 days a year.
Thirty-year normals hide the storms and the extremes: the hazards page has St. Theresa Point’s risks.
Flood & hazards →ECCC’s normals location: Island Lake
Island Lake is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 20 km north-east |
| Station altitude | 235 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −43.7°C |
| Hottest reading, 1991–2020 | 37.3°C |
| Average wind | 11.3 km/h on average, most often from the west |
| Next-nearest location | Norway House, 194 km |
How St. Theresa Point 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 Manitoba.
Nearby towns’ climate
Places around St. Theresa Point whose figures come from another normals location. The one place listed is 159 km from St. Theresa Point, the nearest with figures.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| St. Theresa Point Island Lake | 23.1°C | −26.3°C | 567 mm |
| Division No. 22, Unorganized 159 km · Norway House | 23.5°C about the same | −25.5°C 0.8°C milder | 495 mm |
St. Theresa Point 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 | −16.4°C | −26.3°C | −21.4°C | 22 mm | 25 cm |
| February | −12.4°C | −25.0°C | −18.7°C | 20 mm | 23 cm |
| March | −3.8°C | −17.2°C | −10.5°C | 24 mm | 23 cm |
| April | 5.6°C | −7.1°C | −0.7°C | 24 mm | 16 cm |
| May | 13.1°C | 1.3°C | 7.2°C | 48 mm | 10 cm |
| June | 20.1°C | 9.1°C | 14.6°C | 71 mm | 1 cm |
| July | 23.1°C | 13.2°C | 18.2°C | 99 mm | 0 cm |
| August | 21.5°C | 12.2°C | 16.9°C | 84 mm | 0 cm |
| September | 14.8°C | 6.5°C | 10.7°C | 62 mm | under 1 cm |
| October | 5.8°C | −0.1°C | 2.8°C | 58 mm | 20 cm |
| November | −4.4°C | −10.9°C | −7.7°C | 31 mm | 31 cm |
| December | −13.2°C | −21.8°C | −17.5°C | 26 mm | 29 cm |
| Year | 4.5°C | −5.5°C | −0.5°C | 567 mm | 177 cm |
A February here can run warm or cold, its average moving by about 4.1°C; the steadiest month is August
March has the widest record range, −41.6°C in 1995 to 19.3°C in 2012; the tick on each bar is the month’s normal.
Where St. Theresa Point’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Island Lake from ECCC’s climate data site, the nearest location with every month of temperature.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- 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 St. Theresa Point’s climate
How warm does St. Theresa Point get in summer?
The year’s warmest days come in July, with highs averaging 23.1°C.
How cold does St. Theresa Point get in winter?
In January, the coldest month, the typical low is −26.3°C.
How much rain and snow does St. Theresa Point get?
567 mm a year counting snow as water. The wettest month is July (99 mm); the driest, February (20 mm).
How long does snow stay on the ground?
There is 1 cm of snow or more on the ground on roughly 176 days a year.
Are these figures for St. Theresa Point itself?
Not quite: they come from Island Lake, the closest ECCC normals location to St. Theresa Point.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for St. Theresa Point →
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).