Photo: P199 · CC BY-SA 3.0Frost comes to Thamesford less often than to 75% of Canadian towns
Expect July afternoons of about 26.6°C. Seasons differ by 36°C, from the coldest nights to the warmest afternoons. In July, afternoons here are warmer than in 70% of Canadian towns. Warm coats and heating bills mark the months from October to April, when means dip under 10°C.
No ECCC station in Thamesford has 1991–2020 normals; the page reads London, 19 km south-west, instead.
A year in Thamesford at a glance
Each month’s typical high and low, in °C.
What stands out about Thamesford’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Thamesford feels like
Each season’s and each month’s usual high and low, 1991–2020.
139 frost days and 128 days above 20°C a year
From October to May frost is routine, and in January it comes on almost every night. Heat of 30°C or more comes on about 11 days a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
962 mm of precipitation in a typical year
September is the wettest month and February the driest. On about 128 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
152 cm of snow in a typical year
The snow season runs October to April; January brings the most, about 43 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
London publishes no full year of snowfall, so these figures come from Strathroy-Mullifarry, 60 km away.
Heating a home in Thamesford
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. Homes here need less heating than 79% of Canadian towns.
Living with Thamesford’s climate
What the normals mean for a garden, a day outside and the depth of winter.
Gardens get from about 3 May to 16 October without frost, around 165 days in all.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul, Aug and Sep.
Parks & trails →Plan for about 18 days a year with a wind chill below −20.
Expect around 55 sticky days a year with the humidex above 30.
Bad-weather days, from blizzards to floods, get their own page for Thamesford: the hazards page.
Flood & hazards →ECCC’s normals location: London
London is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 19 km south-west |
| Station altitude | 278 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Strathroy-Mullifarry, 60 km |
| Coldest reading, 1991–2020 | −29.1°C |
| Hottest reading, 1991–2020 | 37.0°C |
| Average wind | 14.0 km/h on average, most often from the west |
| Next-nearest location | Delhi, 45 km |
How Thamesford 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
The nearest places on a normals location of their own: those that share Thamesford’s would only repeat its figures. Thamesford has few close neighbours with figures, so the list reaches 17–35 km out.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Thamesford London | 26.6°C | −9.1°C | 962 mm |
| Woodstock 17 km · Delhi | 27.5°C 0.9°C warmer | −8.9°C about the same | 965 mm |
| Plattsville 34 km · Kitchener/Waterloo | 26.6°C about the same | −10.3°C 1.2°C colder | 851 mm |
Thamesford weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −1.6°C | −9.1°C | −5.4°C | 79 mm | 43 cm |
| February | −0.6°C | −9.0°C | −4.8°C | 63 mm | 32 cm |
| March | 4.6°C | −4.5°C | 0.1°C | 67 mm | 20 cm |
| April | 12.2°C | 1.4°C | 6.8°C | 89 mm | 5 cm |
| May | 19.3°C | 7.7°C | 13.5°C | 89 mm | under 1 cm |
| June | 24.4°C | 13.2°C | 18.8°C | 86 mm | 0 cm |
| July | 26.6°C | 15.3°C | 21.0°C | 81 mm | 0 cm |
| August | 25.7°C | 14.4°C | 20.1°C | 67 mm | 0 cm |
| September | 22.1°C | 10.5°C | 16.3°C | 93 mm | 0 cm |
| October | 14.7°C | 5.0°C | 9.9°C | 83 mm | 2 cm |
| November | 7.5°C | −0.3°C | 3.6°C | 88 mm | 13 cm |
| December | 1.4°C | −5.2°C | −2.0°C | 79 mm | 37 cm |
| Year | 13.0°C | 3.3°C | 8.2°C | 962 mm | 152 cm |
March: −25.6°C at its coldest, 27.2°C at its warmest
From one year to the next, February’s average typically shifts by 3.0°C around its normal of −4.8°C, the widest of any month, while June’s shifts by 1.1°C.
Where Thamesford’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at London (the closest location with all twelve months of temperatures).
- Other locations: ECCC blanks a month that fails its completeness rule, so the precipitation or snowfall here comes from the next location with all twelve months.
- Comparisons: every place of 2,500+ in Canada but the city hubs and the reserves, each on its nearest ECCC location.
- 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 Thamesford’s climate
How warm does Thamesford get in summer?
Of all twelve months, July has the warmest afternoons, about 26.6°C.
How cold does Thamesford get in winter?
January nights average −9.1°C, the coldest of the year.
How much rain and snow does Thamesford get?
The yearly total is about 962 mm. September gets 93 mm, the most of any month; February gets 63 mm, the least.
Are these figures for Thamesford itself?
Only indirectly: the readings are made at London, outside Thamesford.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Thamesford →
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).