Photo: Ashtabula Archive · Public domainBayham sits near the top of Canadian towns for July heat
January nights here settle around −8.9°C. The gap between a January night and a July afternoon is 36°C. Winters are mild: January nights here are milder than in 78% of Canadian towns. Wet days, with 1 mm of rain or snow or more, come about 118 times a year.
Borrowed figures: Bayham has no normals station, so these come from Delhi, 27 km north-east.
A year in Bayham at a glance
Each month’s typical high and low, in °C.
What stands out about Bayham’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Bayham 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
The frost season runs October to May, and January freezes nearly every night. Deep cold, under −20°C, comes on about 5 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 965 mm of rain and snow a year
July is the wettest month and February the driest.
Rain and snow by month
Millimetres
About 91 cm of snow a year
The snow season runs November to April; January brings the most, about 28 cm. 848th snowiest of 854 towns of 2,500+ in Ontario.
Snowfall by month
Centimetres
ECCC’s Delhi normals leave snowfall out; the figures here come from New Glasgow, 72 km away.
Heating a home in Bayham
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Heating degree days total each day’s gap between its mean temperature and 18°C. A house here needs less heating than 80% of Canadian towns.
Living with Bayham’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 →Plan for about 13 days a year with a wind chill below −20.
The air feels heavier than 30 on the humidex for about 61 days a year.
Storms, floods and heat waves sit outside these normals; Bayham’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Delhi
Behind the 1991–2020 normals for Delhi are 2 stations, which ECCC combines into one record.
| Distance from the town | 27 km north-east |
| Station altitude | 232 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | New Glasgow, 72 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, 43 km |
How Bayham 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 Bayham whose figures come from another normals location.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Bayham Delhi | 27.5°C | −8.9°C | 965 mm |
| Malahide 13 km · London | 26.6°C 0.9°C cooler | −9.1°C about the same | 962 mm |
| Tillsonburg 17 km · Delhi | 27.5°C about the same | −8.9°C about the same | 965 mm |
Bayham 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 | 28 cm |
| February | −0.1°C | −8.8°C | −4.5°C | 58 mm | 22 cm |
| March | 5.1°C | −4.4°C | 0.3°C | 71 mm | 13 cm |
| April | 12.6°C | 1.1°C | 6.8°C | 87 mm | 4 cm |
| May | 19.9°C | 7.2°C | 13.6°C | 88 mm | 0 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 | under 1 cm |
| November | 8.0°C | −0.2°C | 3.9°C | 83 mm | 4 cm |
| December | 1.9°C | −5.0°C | −1.7°C | 76 mm | 19 cm |
| Year | 13.6°C | 3.2°C | 8.4°C | 965 mm | 91 cm |
February varies most from one year to the next (3.1°C), June least
March has the widest record range, −25.9°C in 2015 to 27.3°C in 2012; the tick on each bar is the month’s normal.
Where Bayham’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for Delhi, the nearest location with a full year 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 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: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Bayham’s climate
How warm does Bayham get in summer?
Of all twelve months, July has the warmest afternoons, about 27.5°C.
How cold does Bayham get in winter?
Of all twelve months, January has the coldest nights, about −8.9°C.
How much rain and snow does Bayham get?
A normal year brings 965 mm, snow included as water: July is wettest at 89 mm, February driest at 58 mm.
Are these figures for Bayham itself?
They describe Delhi, the nearest normals location, rather than Bayham itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Bayham →
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).