Photo: Jodie Wilson from Mountain View, USA · CC BY 2.0A middle-of-the-road climate: Douro-Dummer is close to most Canadian towns on every count
July afternoons reach 26.6°C on a typical day and January nights drop to −12.8°C; 840 mm of rain and melted snow falls in a year. Summer afternoons here are warmer than in 70% of Canadian towns. June is the wettest month, February the driest. Long walks are most pleasant from June to August, when afternoons reach 24–27°C.
These are not Douro-Dummer’s own readings: ECCC keeps no normals there, so the page uses Peterborough, 25 km south-west.
A year in Douro-Dummer at a glance
Each month’s typical high and low, in °C.
What stands out about Douro-Dummer’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Ontario beside it.
What a year in Douro-Dummer feels like
Each season’s and each month’s usual high and low, 1991–2020.
Frost on 169 days, 20°C on 121
The frost season runs September to May, and January freezes nearly every night. On about 15 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
About 840 mm of rain and snow a year
Some 114 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
158 cm of snow in a typical year
From October to April snow is likely; January is the peak, at about 45 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Douro-Dummer
91% 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.
Living with Douro-Dummer’s climate
Gardening, time outside, winter cold and summer heat, from the 1991–2020 normals.
The growing season between frosts lasts about 130 days, roughly 16 May to 24 September.
Warm afternoons without cold nights, 17–27°C and 8°C or more, mark Jun, Jul and Aug.
Parks & trails →Winter brings about 29 days with a wind chill below −20.
About 54 days a year turn sultry, with the humidex past 30.
The normals describe a typical year, not its worst days; the hazards page covers Douro-Dummer’s.
Flood & hazards →ECCC’s normals location: Peterborough
Peterborough is a composite: ECCC joins 3 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 25 km south-west |
| Station altitude | 191 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −37.6°C |
| Hottest reading, 1991–2020 | 36.2°C |
| Average wind | 10.6 km/h on average, most often from the west |
| Next-nearest location | Cobourg, 51 km |
How Douro-Dummer 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
Places around Douro-Dummer whose figures come from another normals location. Distances here run 24–29 km: that is how far the nearest places with figures are from Douro-Dummer.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Douro-Dummer Peterborough | 26.6°C | −12.8°C | 840 mm |
| Havelock 24 km · Trenton | 26.5°C about the same | −11.2°C 1.6°C milder | 941 mm |
| North Kawartha 29 km · Haliburton | 25.3°C 1.3°C cooler | −16.0°C 3.2°C colder | 1,106 mm |
Douro-Dummer weather by month
Each month’s normals, 1991–2020: high, low, mean, precipitation and snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −2.6°C | −12.8°C | −7.6°C | 67 mm | 45 cm |
| February | −1.8°C | −12.8°C | −7.3°C | 42 mm | 27 cm |
| March | 4.1°C | −7.1°C | −1.5°C | 54 mm | 28 cm |
| April | 11.6°C | −0.3°C | 5.7°C | 73 mm | 7 cm |
| May | 19.3°C | 5.6°C | 12.5°C | 79 mm | 0 cm |
| June | 24.0°C | 10.7°C | 17.4°C | 88 mm | 0 cm |
| July | 26.6°C | 12.8°C | 19.7°C | 69 mm | 0 cm |
| August | 25.5°C | 11.7°C | 18.6°C | 78 mm | 0 cm |
| September | 21.4°C | 7.3°C | 14.4°C | 76 mm | 0 cm |
| October | 13.9°C | 2.0°C | 8.0°C | 75 mm | 1 cm |
| November | 6.6°C | −2.9°C | 1.9°C | 76 mm | 17 cm |
| December | 0.4°C | −8.3°C | −3.9°C | 64 mm | 33 cm |
| Year | 12.4°C | 0.5°C | 6.5°C | 840 mm | 158 cm |
Two years in three, January’s average lands within 3.3°C of normal, against the steadier June
Bars run from each month’s record low to its record high since 1991. March spans the most, from −31.4°C (2003) to 26.0°C (2012).
Where Douro-Dummer’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 normals from ECCC for Peterborough, its nearest location with complete temperatures.
- Comparisons: the 2,500-plus towns and neighbourhoods of Canada, each read from its closest normals location; whole cities and reserves aren’t counted.
- 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 Douro-Dummer’s climate
How warm does Douro-Dummer get in summer?
Peak warmth comes in July, at about 26.6°C by mid-afternoon.
How cold does Douro-Dummer get in winter?
Overnight lows average −12.8°C in January, the coldest month.
How much rain and snow does Douro-Dummer get?
The yearly total is about 840 mm. June gets 88 mm, the most of any month; February gets 42 mm, the least.
How long does snow stay on the ground?
In a normal winter there are about 99 days with at least 1 cm of snow lying.
Are these figures for Douro-Dummer itself?
They are borrowed from Peterborough, the nearest place to Douro-Dummer where ECCC publishes 1991–2020 normals.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Douro-Dummer →
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).