Photo: JFVoll · CC BY-SA 4.0In Erin, July heat, January cold and precipitation all sit near the middle of Canadian towns
About 807 mm of rain and snow falls in a typical year; July afternoons reach 25.4°C and January nights drop to −10.7°C. A year here swings 36°C from midwinter lows to midsummer highs. Winters are mild: January nights here are milder than in 64% of Canadian towns. Heating does most of its work from October to April, in months below 10°C on average.
ECCC publishes no normals for Erin itself; the figures are those of Elora, 30 km south-west.
A year in Erin at a glance
Each month’s typical high and low, in °C.
What stands out about Erin’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Erin feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
156 frost days and 116 days above 20°C a year
From October to May frost is routine, and in January it comes on almost every night. On about 8 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
807 mm of precipitation in a typical year
The most falls in June, the least in February. About 106 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
ECCC’s Elora normals leave out precipitation and snow; both come from Toronto Pearson (Airport) here, 38 km away.
About 115 cm of snow a year
The snow season runs November to April; January brings the most, about 32 cm.
Snowfall by month
Centimetres
Heating a home in Erin
91% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
The total grows by a degree for every degree a day’s mean sits under 18°C. By this count, homes here need less heating than 66% of Canadian towns.
Living with Erin’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Plan time outside for Jun, Jul, Aug and Sep: highs of 17–27°C and nights no colder than 8°C.
Parks & trails →The wind chill passes −20 on about 27 days in a normal year.
Humid heat, a humidex over 30, comes on about 44 days a year.
Storms, floods and heat waves sit outside these normals; Erin’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Elora
Elora is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 30 km south-west |
| Station altitude | 376 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Precipitation from | Toronto Pearson (Airport), 38 km |
| Coldest reading, 1991–2020 | −31.2°C |
| Hottest reading, 1991–2020 | 34.8°C |
| Average wind | 14.2 km/h on average, most often from the west |
| Next-nearest location | Toronto Pearson (Airport), 38 km |
How Erin compares
Compared with 2,611 towns and neighbourhoods of 2,500 or more across Canada; the dots mark the other normals locations in Ontario.
Nearby towns’ climate
Places around Erin whose figures come from another normals location. The nearest places to Erin with figures are 18–28 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Erin Elora | 25.4°C | −10.7°C | 807 mm |
| Georgetown 18 km · Toronto Pearson (Airport) | 27.4°C 2.0°C warmer | −8.9°C 1.8°C milder | 807 mm |
| Mono 23 km · Egbert | 26.0°C 0.6°C warmer | −11.3°C 0.6°C colder | 793 mm |
| Guelph 28 km · Kitchener/Waterloo | 26.6°C 1.2°C warmer | −10.3°C about the same | 851 mm |
Erin weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −3.1°C | −10.7°C | −6.9°C | 62 mm | 32 cm |
| February | −2.4°C | −11.0°C | −6.7°C | 50 mm | 28 cm |
| March | 3.1°C | −6.0°C | −1.5°C | 51 mm | 17 cm |
| April | 10.9°C | 0.3°C | 5.6°C | 77 mm | 5 cm |
| May | 18.3°C | 6.3°C | 12.3°C | 78 mm | under 1 cm |
| June | 23.2°C | 11.4°C | 17.3°C | 81 mm | 0 cm |
| July | 25.4°C | 13.5°C | 19.5°C | 74 mm | 0 cm |
| August | 24.6°C | 12.6°C | 18.6°C | 69 mm | 0 cm |
| September | 21.0°C | 8.9°C | 15.0°C | 69 mm | 0 cm |
| October | 13.4°C | 3.4°C | 8.5°C | 67 mm | under 1 cm |
| November | 6.2°C | −1.5°C | 2.4°C | 72 mm | 9 cm |
| December | 0.0°C | −6.3°C | −3.3°C | 59 mm | 24 cm |
| Year | 11.7°C | 1.8°C | 6.7°C | 807 mm | 115 cm |
February strays furthest from its normal year to year, by 3.1°C; June the least
Each bar spans a month’s coldest and warmest readings over thirty years; March’s run from −27.5°C in 2003 to 26.4°C in 2012.
Where Erin’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Elora: the nearest of its locations with every month’s temperatures.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- 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 Erin’s climate
How warm does Erin get in summer?
The year’s warmest days come in July, with highs averaging 25.4°C.
How cold does Erin get in winter?
February nights average −11.0°C, the coldest of the year.
How much rain and snow does Erin get?
Precipitation totals 807 mm a year, with June the wettest month (81 mm) and February the driest (50 mm).
Are these figures for Erin itself?
Not directly: Erin has no ECCC normals of its own, and Elora stands in for it.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Erin →
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).