Ice rarely forms: Butler sees fewer frosts than 73% of Canadian towns
Sunny July days climb to about 26.6°C. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 36°C apart. Its July heat outdoes that of 70% of Canadian towns. An umbrella or a shovel earns its place on about 114 days a year with 1 mm or more.
Read at Hamilton, 6.6 km south-west: ECCC’s normals for 1991–2020.
A year in Butler at a glance
Each month’s typical high and low, in °C.
What stands out about Butler’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Butler feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
139 frost days and 123 days above 20°C a year
The frost season runs October to May, and January freezes nearly every night. Heat of 30°C or more comes on about 13 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 902 mm of rain and snow a year
July brings the most rain and snow; February, the least.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
141 cm of snow in a typical year
Snow falls from November to April, most of all in January (about 44 cm).
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
ECCC’s Hamilton normals leave snowfall out; the figures here come from Welland-Pelham, 55 km away.
Heating a home in Butler
92% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Heating degree days total each day’s gap between its mean temperature and 18°C. That means homes here need less heating than 77% of Canadian towns.
Living with Butler’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Plant out after about 1 May; the first frost of autumn usually arrives near 12 October, leaving roughly 164 days without frost.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: Jun, Jul, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 20 days a year.
Expect around 59 sticky days a year with the humidex above 30.
A normal year has no blizzard, flood or heat wave in it; Butler’s hazards page looks at those.
Flood & hazards →ECCC’s normals location: Hamilton
Hamilton is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 6.6 km south-west |
| Station altitude | 238 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Snowfall from | Welland-Pelham, 55 km |
| Coldest reading, 1991–2020 | −30.0°C |
| Hottest reading, 1991–2020 | 36.4°C |
| Average wind | 16.0 km/h on average, most often from the south-west |
| Next-nearest location | Burlington Piers, 13 km |
How Butler 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
Places around Butler whose figures come from another normals location. Distances here run 4–28 km: that is how far the nearest places with figures are from Butler.
Butler 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 | −1.4°C | −9.1°C | −5.3°C | 73 mm | 44 cm |
| February | −0.9°C | −9.2°C | −5.0°C | 53 mm | 24 cm |
| March | 4.7°C | −4.4°C | 0.2°C | 69 mm | 28 cm |
| April | 11.8°C | 1.3°C | 6.5°C | 81 mm | 5 cm |
| May | 18.9°C | 7.3°C | 13.1°C | 81 mm | 0 cm |
| June | 24.2°C | 12.8°C | 18.5°C | 78 mm | 0 cm |
| July | 26.6°C | 15.2°C | 20.9°C | 98 mm | 0 cm |
| August | 25.6°C | 14.5°C | 20.1°C | 67 mm | 0 cm |
| September | 21.7°C | 10.5°C | 16.1°C | 74 mm | 0 cm |
| October | 14.5°C | 4.8°C | 9.7°C | 84 mm | under 1 cm |
| November | 7.7°C | −0.2°C | 3.8°C | 78 mm | 9 cm |
| December | 1.5°C | −5.4°C | −1.9°C | 67 mm | 32 cm |
| Year | 12.9°C | 3.2°C | 8.1°C | 902 mm | 141 cm |
Two years in three, January’s average lands within 3.0°C of normal, against the steadier June
The thirty-year records stretch furthest in March: a low of −24.6°C in 2003 and a high of 26.8°C in 2012.
Where Butler’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Hamilton, its nearest location with complete temperatures.
- Other locations: a location missing months of precipitation or snow is filled from the nearest that has them all, never mixed month by month.
- 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 Butler’s climate
How warm does Butler get in summer?
July is the warmest month, with average highs of 26.6°C.
How cold does Butler get in winter?
Lows sink to −9.2°C on an average February night.
How much rain and snow does Butler get?
July is the wettest month at 98 mm and February the driest at 53 mm, for 902 mm over the year.
How long does snow stay on the ground?
About 82 days a year count as snow-covered, with 1 cm or more.
Are these figures for Butler itself?
Close to it: they are ECCC’s 1991–2020 normals for Hamilton, just outside Butler’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Butler →
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).