Tillsonburg has some of the warmest summer afternoons among Canadian towns
On a normal January night the air cools to about −8.9°C. Rain or snow is most frequent in July and least in February. Its January nights stay gentler than in 78% of Canadian towns. Homes need heating from November to April, the months averaging under 10°C.
These are not Tillsonburg’s own readings: ECCC keeps no normals there, so the page uses Delhi, 15 km east.
A year in Tillsonburg at a glance
Each month’s typical high and low, in °C.
What stands out about Tillsonburg’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Tillsonburg feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
140 frost days and 133 days above 20°C a year
Frost comes from October to May; in January almost every night freezes. Some 5 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
965 mm of precipitation in a typical year
About 118 days a year bring 1 mm or more.
Rain and snow by month
Millimetres
152 cm of snow in a typical year
Snow falls from October to April, most of all in January (about 43 cm).
Snowfall by month
Centimetres
Delhi publishes no full year of snowfall, so these figures come from Strathroy-Mullifarry, 75 km away.
Heating a home in Tillsonburg
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
A day averaging 10 degrees under 18°C adds 10 to the total; warm days add nothing. Homes here need less heating than 80% of Canadian towns.
Living with Tillsonburg’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
Highs of 17–27°C with nights of 8°C or more come in Jun, Aug and Sep.
Parks & trails →A wind chill below −20 is part of about 13 days a year here.
Plan shade and water for about 61 days a year above 30 on the humidex.
The normals describe a typical year, not its worst days; the hazards page covers Tillsonburg’s.
Flood & hazards →ECCC’s normals location: Delhi
ECCC builds the Delhi normals from 2 stations’ records over 1991–2020, joined where one replaced another.
| Distance from the town | 15 km east |
| Station altitude | 232 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Strathroy-Mullifarry, 75 km |
| Coldest reading, 1991–2020 | −34.1°C |
| Hottest reading, 1991–2020 | 36.3°C |
| Average wind | 8.3 km/h on average, most often from the south-west |
| Next-nearest location | London, 38 km |
How Tillsonburg 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 Tillsonburg’s own would show the same figures). Tillsonburg has no close neighbour with figures; the nearest is 22 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Tillsonburg Delhi | 27.5°C | −8.9°C | 965 mm |
| Ingersoll 22 km · London | 26.6°C 0.9°C cooler | −9.1°C about the same | 962 mm |
Tillsonburg 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 | −1.1°C | −8.9°C | −5.0°C | 81 mm | 43 cm |
| February | −0.1°C | −8.8°C | −4.5°C | 58 mm | 32 cm |
| March | 5.1°C | −4.4°C | 0.3°C | 71 mm | 20 cm |
| April | 12.6°C | 1.1°C | 6.8°C | 87 mm | 5 cm |
| May | 19.9°C | 7.2°C | 13.6°C | 88 mm | under 1 cm |
| June | 25.2°C | 12.8°C | 19.0°C | 82 mm | 0 cm |
| July | 27.5°C | 14.9°C | 21.2°C | 89 mm | 0 cm |
| August | 26.3°C | 14.0°C | 20.1°C | 80 mm | 0 cm |
| September | 22.4°C | 10.3°C | 16.4°C | 86 mm | 0 cm |
| October | 15.0°C | 4.9°C | 10.0°C | 86 mm | 2 cm |
| November | 8.0°C | −0.2°C | 3.9°C | 83 mm | 13 cm |
| December | 1.9°C | −5.0°C | −1.7°C | 76 mm | 37 cm |
| Year | 13.6°C | 3.2°C | 8.4°C | 965 mm | 152 cm |
March: −25.9°C at its coldest, 27.3°C at its warmest
The month to count on least is February: one year in three its average strays more than 3.1°C from −4.5°C. June moves least, typically by 1.0°C.
Where Tillsonburg’s numbers come from
Averages over 30 years, not a forecast.
- Normals: Environment and Climate Change Canada’s 1991–2020 normals, Delhi: the nearest of its locations with every month’s 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: 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: sunshine, which none of ECCC’s 450 locations publishes for 1991–2020, and the town’s own height above sea level, so no figure is adjusted for altitude.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Tillsonburg’s climate
How warm does Tillsonburg get in summer?
Peak warmth comes in July, at about 27.5°C by mid-afternoon.
How cold does Tillsonburg get in winter?
The year’s coldest nights belong to January, at about −8.9°C.
How much rain and snow does Tillsonburg get?
Rain and snow add up to about 965 mm of water a year; July brings the most (89 mm), February the least (58 mm).
Are these figures for Tillsonburg itself?
They are the closest available: the normals for Delhi, since Tillsonburg has none.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Tillsonburg →
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).