Photo: P199 · CC BY-SA 3.0Hardly any Canadian towns see more snow than Chisholm, with about 312 cm a year
On a normal January night the air cools to about −17.3°C. In January, nights here are colder than in 81% of Canadian towns. Of all months, September brings the most precipitation and February the least. An umbrella or a shovel earns its place on about 133 days a year with 1 mm or more.
Chisholm has no ECCC normals station of its own: every figure here comes from North Bay, 33 km north-west.
A year in Chisholm at a glance
Each month’s typical high and low, in °C.
What stands out about Chisholm’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Chisholm feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 176 days, 20°C on 96
Frost comes from September to May; in January almost every night freezes. Some 28 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
1,020 mm of precipitation in a typical year
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
312 cm of snow in a typical year
Snow falls from October to May, most of all in December (about 71 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Chisholm
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. That means homes here need more heating than 72% of Canadian towns.
Living with Chisholm’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Wait until about 15 May to plant out; frost tends to come back around 29 September, about 135 days later.
Mild days and mild nights together (17–27°C by day, 8°C or more at night) belong to Jun, Jul, Aug and Sep.
Parks & trails →Count on some 61 days a year when the wind makes it feel below −20.
On some 25 days a year the humidex climbs past 30.
A typical year is calm by definition; Chisholm’s hazards page covers the exceptions.
Flood & hazards →ECCC’s normals location: North Bay
Behind the 1991–2020 normals for North Bay are 3 stations, which ECCC combines into one record.
| Distance from the town | 33 km north-west |
| Station altitude | 370 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −39.3°C |
| Hottest reading, 1991–2020 | 35.3°C |
| Average wind | 14.0 km/h on average, most often from the south-west |
| Next-nearest location | Barrage Témiscamingue, 69 km |
How Chisholm 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 Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Chisholm’s own would show the same figures). No closer places have figures: these lie 45–57 km from Chisholm.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Chisholm North Bay | 24.3°C | −17.3°C | 1,020 mm |
| Mattawa 45 km · Barrage Témiscamingue | 25.5°C 1.2°C warmer | −16.0°C 1.3°C milder | 1,020 mm |
| Burk's Falls 55 km · Muskoka | 25.3°C 1.0°C warmer | −15.3°C 2.0°C milder | 1,062 mm |
Chisholm 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 | −7.4°C | −17.3°C | −12.3°C | 70 mm | 70 cm |
| February | −5.6°C | −15.9°C | −10.8°C | 54 mm | 63 cm |
| March | 0.7°C | −9.6°C | −4.5°C | 60 mm | 39 cm |
| April | 8.6°C | −1.8°C | 3.4°C | 72 mm | 18 cm |
| May | 17.0°C | 5.7°C | 11.4°C | 89 mm | 4 cm |
| June | 22.0°C | 11.1°C | 16.6°C | 91 mm | under 1 cm |
| July | 24.3°C | 13.7°C | 19.0°C | 98 mm | 0 cm |
| August | 23.1°C | 12.8°C | 18.0°C | 93 mm | 0 cm |
| September | 18.5°C | 8.3°C | 13.4°C | 114 mm | under 1 cm |
| October | 10.6°C | 2.3°C | 6.5°C | 109 mm | 9 cm |
| November | 3.1°C | −4.3°C | −0.6°C | 97 mm | 38 cm |
| December | −3.8°C | −11.7°C | −7.8°C | 73 mm | 71 cm |
| Year | 9.3°C | −0.6°C | 4.4°C | 1,020 mm | 312 cm |
A March here can run from −33.1°C to 25.2°C
January is the least predictable month: about two years in three its average lands within 3.4°C of the normal, −12.3°C. June is the steadiest, within 1.3°C.
Where Chisholm’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at North Bay, the closest ECCC location with twelve months of temperature normals.
- Comparisons: every Canadian town and neighbourhood of 2,500 or more, each read from its own nearest location; city totals and reserves are left out.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Chisholm’s climate
How warm does Chisholm get in summer?
Afternoons average 24.3°C in July, the warmest time of year.
How cold does Chisholm get in winter?
In January, the coldest month, the typical low is −17.3°C.
How much rain and snow does Chisholm get?
Count on roughly 1,020 mm a year, heaviest in September (114 mm) and lightest in February (54 mm).
How long does snow stay on the ground?
Snow covers the ground, 1 cm or more, on about 137 days a year.
Are these figures for Chisholm itself?
Not quite: they come from North Bay, the closest ECCC normals location to Chisholm.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Chisholm →
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).