Photo: Earth Science and Remote Sensing Unit , Lyndon B. Johnson Space Center · Public domainHardly any Canadian towns see harsher January nights than Lac Seul 28
Expect July afternoons of about 24.3°C. By July afternoons alone, it runs cooler than 68% of Canadian towns. Some 47°C separates winter nights from summer afternoons. Plan time outside from June to August, when highs sit at 22–24°C.
No ECCC station in Lac Seul 28 has 1991–2020 normals; the page reads Sioux Lookout, 25 km east, instead.
A year in Lac Seul 28 at a glance
Each month’s typical high and low, in °C.
What stands out about Lac Seul 28’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Lac Seul 28 feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
194 frost days and 92 days above 20°C a year
Frost comes from September to May; in January almost every night freezes. On about 56 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
796 mm of precipitation in a typical year
June is the wettest month and February the driest. Some 112 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 213 cm in a normal year
The snow season runs September to May; November brings the most, about 41 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Lac Seul 28
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. By this count, homes here need more heating than 97% of Canadian towns.
Living with Lac Seul 28’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Frost usually lets go around 17 May and returns near 28 September, about 133 days apart.
For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →Bitter wind chill, under −20, comes on about 82 days a year.
Expect around 20 sticky days a year with the humidex above 30.
Thirty years of averages say little about one bad storm; Lac Seul 28’s hazards page does.
Flood & hazards →ECCC’s normals location: Sioux Lookout
ECCC builds the Sioux Lookout normals from 3 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 25 km east |
| Station altitude | 383 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −43.9°C |
| Hottest reading, 1991–2020 | 37.8°C |
| Average wind | 11.5 km/h on average, most often from the south |
| Next-nearest location | Red Lake, 149 km |
How Lac Seul 28 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 Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Lac Seul 28’s own would show the same figures). The nearest places to Lac Seul 28 with figures are 78–92 km away.
Lac Seul 28 weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −12.0°C | −22.3°C | −17.2°C | 36 mm | 37 cm |
| February | −7.8°C | −19.8°C | −13.9°C | 22 mm | 23 cm |
| March | −0.1°C | −12.5°C | −6.3°C | 33 mm | 24 cm |
| April | 8.3°C | −3.8°C | 2.3°C | 43 mm | 23 cm |
| May | 16.3°C | 3.8°C | 10.1°C | 91 mm | 7 cm |
| June | 22.1°C | 10.3°C | 16.2°C | 113 mm | 0 cm |
| July | 24.3°C | 13.1°C | 18.8°C | 102 mm | 0 cm |
| August | 23.1°C | 12.1°C | 17.7°C | 95 mm | 0 cm |
| September | 17.1°C | 7.2°C | 12.2°C | 96 mm | 1 cm |
| October | 8.1°C | 0.4°C | 4.3°C | 78 mm | 20 cm |
| November | −1.2°C | −8.2°C | −4.7°C | 53 mm | 41 cm |
| December | −8.5°C | −17.0°C | −12.8°C | 37 mm | 38 cm |
| Year | 7.5°C | −3.1°C | 2.2°C | 796 mm | 213 cm |
March: −35.3°C at its coldest, 23.4°C at its warmest
Year to year, February varies most (a standard deviation of 3.7°C around −13.9°C) and August least (1.5°C).
Where Lac Seul 28’s numbers come from
Averages over 30 years, not a forecast.
- Normals: 1991–2020 normals for Sioux Lookout from ECCC’s climate data site, the nearest location with every month of temperature.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- 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 Lac Seul 28’s climate
How warm does Lac Seul 28 get in summer?
July is the warmest month, with average highs of 24.3°C.
How cold does Lac Seul 28 get in winter?
On a normal January night the air drops to −22.3°C, the coldest of the year.
How much rain and snow does Lac Seul 28 get?
The year adds up to 796 mm. June is the peak month (113 mm) and February the low one (22 mm).
How long does snow stay on the ground?
The ground is white, with 1 cm or more, on some 160 days a year.
Are these figures for Lac Seul 28 itself?
Not directly: Lac Seul 28 has no ECCC normals of its own, and Sioux Lookout stands in for it.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Lac Seul 28 →
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).