Norwich has some of the warmest summer afternoons among Canadian towns
Nights in January average −8.9°C. By January nights alone, it runs milder than 78% of Canadian towns. Precipitation peaks in July and eases off in February. Wet days, with 1 mm of rain or snow or more, come about 118 times a year.
Borrowed figures: Norwich has no normals station, so these come from Delhi, 13 km south.
A year in Norwich at a glance
Each month’s typical high and low, in °C.
What stands out about Norwich’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Norwich feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
140 frost days and 133 days above 20°C a year
Frost comes from October to May; in January almost every night freezes. On about 5 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
965 mm of precipitation in a typical year
Rain and snow by month
Millimetres
About 152 cm of snow a year
From October to April snow is likely; January is the peak, at about 43 cm.
Snowfall by month
Centimetres
Delhi publishes no full year of snowfall, so these figures come from Strathroy-Mullifarry, 85 km away.
Heating a home in Norwich
93% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.
Behind the figure: the degrees each day’s mean falls under 18°C, summed for the year. Over a year, a home here needs less heating than 80% of Canadian towns.
Living with Norwich’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
The outdoor season by the averages is Jun, Aug and Sep, with highs of 17–27°C and lows of 8°C or more.
Parks & trails →The wind chill passes −20 on about 13 days in a normal year.
Humid summer days, the humidex above 30, number about 61 a year.
Storms, floods and heat waves sit outside these normals; Norwich’s hazards page covers them.
Flood & hazards →ECCC’s normals location: Delhi
Delhi is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 13 km south |
| Station altitude | 232 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Strathroy-Mullifarry, 85 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, 45 km |
How Norwich 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
The nearest places on a normals location of their own: those that share Norwich’s would only repeat its figures. No closer places have figures: these lie 24–29 km from Norwich.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Norwich Delhi | 27.5°C | −8.9°C | 965 mm |
| Ingersoll 24 km · London | 26.6°C 0.9°C cooler | −9.1°C about the same | 962 mm |
| Plattsville 28 km · Kitchener/Waterloo | 26.6°C 0.9°C cooler | −10.3°C 1.4°C colder | 851 mm |
Norwich 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 |
The month with the widest range: March, −25.9°C to 27.3°C
February is the least predictable month: about two years in three its average lands within 3.1°C of the normal, −4.5°C. June is the steadiest, within 1.0°C.
Where Norwich’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s normals for Delhi, 1991–2020, chosen as the nearest location with a full temperature record.
- Other locations: precipitation and snowfall come from the nearest location that publishes all twelve months of them, as named above.
- 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 Norwich’s climate
How warm does Norwich get in summer?
Highs reach 27.5°C on an average July day; no month is warmer.
How cold does Norwich get in winter?
Of all twelve months, January has the coldest nights, about −8.9°C.
How much rain and snow does Norwich get?
Rain and snow, with snow counted as water, total 965 mm a year; July leads with 89 mm and February trails with 58 mm.
Are these figures for Norwich itself?
They are borrowed from Delhi, the nearest place to Norwich where ECCC publishes 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Norwich →
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).