Frost comes to Medway less often than to 75% of Canadian towns
The warmest part of a July day comes in at 26.6°C on average. Rain and snow are spread evenly through the year: the wettest month, September, gets little more than the driest, February. Summer afternoons here are warmer than in 70% of Canadian towns. Wet days, with 1 mm of rain or snow or more, come about 128 times a year.
Read at London, 13 km east: ECCC’s normals for 1991–2020.
A year in Medway at a glance
Each month’s typical high and low, in °C.
What stands out about Medway’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Medway 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
Frost comes from October to May; in January almost every night freezes. Some 11 days a year climb past 30°C.
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
Rain and snow by month
Millimetres
About 152 cm of snow a 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
Snowfall: Strathroy-Mullifarry, 29 km away (London records no complete year of it).
Heating a home in Medway
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. A house here needs less heating than 79% of Canadian towns.
Living with Medway’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The growing season between frosts lasts about 165 days, roughly 3 May to 16 October.
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 →A wind chill below −20 is part of about 18 days a year here.
About 55 days a year turn sultry, with the humidex past 30.
The normals describe a typical year, not its worst days; the hazards page covers Medway’s.
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 | 13 km east |
| Station altitude | 278 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Strathroy-Mullifarry, 29 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 | Strathroy-Mullifarry, 29 km |
How Medway compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in Ontario.
Nearby towns’ climate
Nearby places read from a different ECCC location (places on Medway’s own would show the same figures). Medway has no close neighbour with figures; the nearest is 22 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Medway London | 26.6°C | −9.1°C | 962 mm |
| Oneida 41 22 km · Strathroy-Mullifarry | 27.3°C 0.7°C warmer | −8.5°C 0.6°C milder | 966 mm |
Medway 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 | −1.6°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 |
Two years in three, February’s average lands within 3.0°C of normal, against the steadier June
The thirty-year records stretch furthest in March: a low of −25.6°C in 2003 and a high of 27.2°C in 2012.
Where Medway’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for London, the nearest location with a full year of 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: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Medway’s climate
How warm does Medway get in summer?
In July, the warmest month, the typical high is 26.6°C.
How cold does Medway get in winter?
The year’s coldest nights belong to January, at about −9.1°C.
How much rain and snow does Medway 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 Medway itself?
Nearly: London, the location behind them, sits just beyond Medway’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Medway →
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).