Weather in Casselman
Ontario, 64 m · continuously updated
Moose Creek Wells (12 km) · 12 °C · ECCC 08:00
- Wind
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- Humidity
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- Rain ahead
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- Sunset
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Temperature · last 4 and next 28 hours
Casselman weather: the next 24 hours
Updated hourly.
Casselman 14-day forecast
Two-week trend.
Sun and golden hours
Sunrise –, golden light until –
Sunset –, golden light from –
–
Air quality
European index, modelled by Copernicus (CAMS).
UV index
Daily maximum — protection advised from 3.
Freezing level
Snow settles about 300 m below it.
Around Casselman
Neighbouring towns, as the crow flies.
Official weather warnings
No active warning for Casselman.
Updated 02 Nov 13:13.
Data Source: Environment and Climate Change Canada, under the Data Services End-use Licence. Warnings are shown unaltered; this site is not endorsed by Environment and Climate Change Canada.
Is there an active weather warning for Casselman?
No active warning for Casselman.
Latest measurement near Casselman
Measured at Moose Creek Wells, 12 km away from Casselman, November 2, 08:00 EST. This Environment and Climate Change Canada weather station is at an elevation of 86 m (Ontario). These are measured values, not a forecast.
| Temperature | 11.9 °C |
|---|---|
| Wind | 7 km/h SW |
| Gusts, last hour | — |
| Precipitation, last hour | 0.0 mm |
| Humidity | 68 % |
| Pressure (sea level) | 1025 hPa |
Past 24 hours: low 2.4 °C, high 16.2 °C, 0.0 mm of precipitation.
Casselman lies at about 64 m; the station is at 86 m.
Latest measurements from the Canadian weather stations
Data Source: Environment and Climate Change Canada. Reports are published as measured, without quality control, and may contain errors or gaps. Not an official product of the Government of Canada and not endorsed by it. Data Services End-use Licence
Today in Casselman
- Best time to air the house: between 8:00 and 11:00. The outdoor dew point drops to 8.2 °C; once warmed to 20 °C, that air holds only 47 % humidity, against 50 % in a typical home: opening the windows dries the house. How it is calculated
- Washing outside: only just possible. Even hung out between 8:00 and 17:00, it will take about 9 h; bring it in before the air turns cooler. How it is calculated
- UV index of 3 around 12:00: stay in the shade around 12:00. Fair skin burns in about 66 minutes without protection; wear sunscreen and a hat if you are outdoors. How it is calculated
- Garden: 17 mm of rain expected within 48 h, against a need of 2 mm. No need to water, the rain will do it. How it is calculated
- Terrace and barbecue between 18:00 and 23:00: dry but cool, 11 °C at 8 pm and wind at 12 km/h. Wrap up warm, or move indoors. How it is calculated
Calculated from Open-Meteo forecasts of 2026-11-02 08:13 (local time): model values, not measurements. All of today's advice
7-day forecast for Casselman
Today (Monday 2 Nov) in Casselman: overcast, 9 to 16 °C, precipitation 0.0 mm (4 %), wind up to 18 km/h. Tomorrow: rain, 10 to 13 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Today | overcast | 9 °C | 16 °C | 0.0 mm | 18 km/h |
| Tomorrow | rain | 10 °C | 13 °C | 17.0 mm | 13 km/h |
| Wed 4 Nov | overcast | 13 °C | 20 °C | 0.0 mm | 22 km/h |
| Thu 5 Nov | drizzle | 11 °C | 18 °C | 2.2 mm | 22 km/h |
| Fri 6 Nov | light drizzle | 11 °C | 15 °C | 0.9 mm | 16 km/h |
| Sat 7 Nov | light rain | 6 °C | 11 °C | 9.5 mm | 22 km/h |
| Sun 8 Nov | overcast | 4 °C | 9 °C | 0.0 mm | 23 km/h |
Tomorrow's weather in Casselman
Tomorrow, Tuesday 3 Nov, in Casselman: rain, from 10 to 13 °C, 17.0 mm of precipitation (probability 71 %), wind up to 13 km/h.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 00:00 |  overcast | 11 °C | 0.0 mm | 7 % | 12 km/h |
| 03:00 | overcast | 10 °C | 0.0 mm | 12 % | 9 km/h |
| 06:00 | overcast | 10 °C | 0.0 mm | 25 % | 9 km/h |
| 09:00 |  light drizzle | 12 °C | 0.4 mm | 36 % | 7 km/h |
| 12:00 |  rain | 12 °C | 2.5 mm | 67 % | 6 km/h |
| 15:00 | light rain | 12 °C | 1.8 mm | 66 % | 13 km/h |
| 18:00 | rain | 12 °C | 2.5 mm | 56 % | 12 km/h |
| 21:00 | light drizzle | 12 °C | 0.4 mm | 31 % | 6 km/h |
Frequently asked questions
Will it rain tomorrow in Casselman?
Yes: 17.0 mm expected, probability 71 %.
How warm will it be tomorrow in Casselman?
Between 10 and 13 °C.
The weekend
This weekend in Casselman: Saturday light rain, 6 to 11 °C, Sunday overcast, 4 to 9 °C.
| Day | Weather | Min | Max | Precip. | Wind |
|---|---|---|---|---|---|
| Sat 7 Nov | light rain | 6 °C | 11 °C | 9.5 mm | 22 km/h |
| Sun 8 Nov | overcast | 4 °C | 9 °C | 0.0 mm | 23 km/h |
Hour by hour
The next 48 hours in Casselman, hour by hour: temperature from 10 to 16 °C, 17.0 mm of rain expected.
| Hour | Weather | Temp. | Precip. | Chance | Wind |
|---|---|---|---|---|---|
| 08:00 |  mostly sunny | 10 °C | 0.0 mm | 2 % | 12 km/h |
| 09:00 | sunny | 12 °C | 0.0 mm | 3 % | 17 km/h |
| 10:00 | sunny | 13 °C | 0.0 mm | 3 % | 18 km/h |
| 11:00 | sunny | 14 °C | 0.0 mm | 2 % | 17 km/h |
| 12:00 | sunny | 15 °C | 0.0 mm | 2 % | 17 km/h |
| 13:00 | overcast | 16 °C | 0.0 mm | 2 % | 15 km/h |
| 14:00 | overcast | 16 °C | 0.0 mm | 2 % | 14 km/h |
| 15:00 | overcast | 16 °C | 0.0 mm | 2 % | 13 km/h |
| 16:00 | overcast | 15 °C | 0.0 mm | 2 % | 13 km/h |
| 17:00 | overcast | 13 °C | 0.0 mm | 3 % | 14 km/h |
| 18:00 | overcast | 13 °C | 0.0 mm | 3 % | 16 km/h |
| 19:00 | overcast | 12 °C | 0.0 mm | 4 % | 12 km/h |
| 20:00 | overcast | 11 °C | 0.0 mm | 3 % | 11 km/h |
| 21:00 | overcast | 12 °C | 0.0 mm | 3 % | 13 km/h |
| 22:00 | overcast | 11 °C | 0.0 mm | 4 % | 11 km/h |
| 23:00 | overcast | 11 °C | 0.0 mm | 4 % | 11 km/h |
| 00:00 | overcast | 11 °C | 0.0 mm | 7 % | 12 km/h |
| 01:00 | overcast | 10 °C | 0.0 mm | 10 % | 11 km/h |
| 02:00 | overcast | 10 °C | 0.0 mm | 10 % | 13 km/h |
| 03:00 | overcast | 10 °C | 0.0 mm | 12 % | 9 km/h |
| 04:00 | overcast | 10 °C | 0.0 mm | 17 % | 10 km/h |
| 05:00 | light drizzle | 10 °C | 0.4 mm | 24 % | 7 km/h |
| 06:00 | overcast | 10 °C | 0.0 mm | 25 % | 9 km/h |
| 07:00 | drizzle | 10 °C | 0.7 mm | 34 % | 9 km/h |
| 08:00 | drizzle | 10 °C | 0.7 mm | 48 % | 5 km/h |
| 09:00 | light drizzle | 12 °C | 0.4 mm | 36 % | 7 km/h |
| 10:00 | light drizzle | 12 °C | 0.4 mm | 52 % | 8 km/h |
| 11:00 | drizzle | 12 °C | 0.7 mm | 60 % | 6 km/h |
| 12:00 | rain | 12 °C | 2.5 mm | 67 % | 6 km/h |
| 13:00 | drizzle | 13 °C | 0.7 mm | 60 % | 9 km/h |
| 14:00 | heavy drizzle | 12 °C | 1.1 mm | 71 % | 10 km/h |
| 15:00 | light rain | 12 °C | 1.8 mm | 66 % | 13 km/h |
| 16:00 | drizzle | 12 °C | 0.7 mm | 60 % | 10 km/h |
| 17:00 | light drizzle | 12 °C | 0.4 mm | 55 % | 7 km/h |
| 18:00 | rain | 12 °C | 2.5 mm | 56 % | 12 km/h |
| 19:00 | rain | 12 °C | 2.9 mm | 51 % | 9 km/h |
| 20:00 | overcast | 12 °C | 0.0 mm | 31 % | 9 km/h |
| 21:00 | light drizzle | 12 °C | 0.4 mm | 31 % | 6 km/h |
| 22:00 | light drizzle | 12 °C | 0.4 mm | 31 % | 2 km/h |
| 23:00 | light drizzle | 12 °C | 0.3 mm | 31 % | 5 km/h |
| 00:00 | overcast | 13 °C | 0.0 mm | 31 % | 11 km/h |
| 01:00 | overcast | 14 °C | 0.0 mm | 31 % | 18 km/h |
| 02:00 | overcast | 14 °C | 0.0 mm | 5 % | 21 km/h |
| 03:00 | overcast | 14 °C | 0.0 mm | 5 % | 22 km/h |
| 04:00 | overcast | 14 °C | 0.0 mm | 5 % | 21 km/h |
| 05:00 | overcast | 14 °C | 0.0 mm | 5 % | 20 km/h |
| 06:00 | overcast | 14 °C | 0.0 mm | 5 % | 18 km/h |
| 07:00 | overcast | 13 °C | 0.0 mm | 5 % | 15 km/h |
Location of Casselman
Casselman lies at 64 m, 143 m below the average of the 265 places we cover in Ontario (207 m). That makes it the 13th lowest of the 265. The main town, Toronto, lies 386 km to the south-west. The nearest places we cover are Limoges (13 km to the west), Embrun (16 km to the west), Russell (23 km to the west) and Plantagenet (25 km to the north). With about 3,074 inhabitants according to GeoNames, Casselman is the 229th largest of the 265 places we cover in Ontario.
Today is 10.3 °C above the November normal (6.1 °C).
Climate of Casselman: 1991–2020 normals
In Casselman, July is typically the warmest month (up to 25.9 °C on average), while January is the coldest at -13.8 °C. June sees the most rain, with around 105 mm.
By season (average highs, 1991–2020 normals): winter -2.3 °C and 215 mm of rain, spring 11.3 °C and 266 mm, summer 24.8 °C and 303 mm, autumn 13.4 °C and 282 mm. The wettest season is summer (28 % of the annual total), the driest winter (20 %).
| Max T (°C) | Min T (°C) | Rainfall (mm) | Rainy days | |
|---|---|---|---|---|
| January | -4.1 | -13.8 | 73 | 11 |
| February | -2.3 | -12.5 | 61 | 10 |
| March | 3.4 | -6.7 | 73 | 11 |
| April | 11.4 | 0.9 | 98 | 12 |
| May | 19.0 | 8.2 | 96 | 12 |
| June | 23.8 | 13.7 | 105 | 12 |
| July | 25.9 | 16.6 | 101 | 13 |
| August | 24.8 | 16.0 | 97 | 12 |
| September | 20.8 | 12.1 | 96 | 10 |
| October | 13.3 | 5.8 | 103 | 12 |
| November | 6.1 | -0.6 | 83 | 11 |
| December | -0.5 | -8.0 | 82 | 12 |
Compared with Toronto, the main town 386 km to the south-west, highs in the warmest month are 0.5 °C lower here, and the year brings 257 mm more precipitation. In 5 months the average low falls below 0 °C (January, February, March, November and December); in 4 months the average high exceeds 20 °C (June, July, August and September).
Nearby places with normals of their own (from another station or reanalysis grid cell) compare as follows: Limoges (13 km to the west): equally warm summers and 26 mm drier a year; Plantagenet (25 km to the north): summers 0.1 °C cooler and 11 mm drier a year; Clarence-Rockland (31 km to the north-west): summers 0.2 °C cooler and 26 mm drier a year. Among the 265 places we cover in Ontario whose normals come from the ERA5 reanalysis, Casselman ranks 68th for summer warmth and 6th for annual precipitation. The warmest summers are in LaSalle and Tecumseh and the coolest in Shuniah Township; the wettest year is in Crystal Beach and the driest in Kashechewan.
What is the warmest month in Casselman?
The warmest month in Casselman is typically July, averaging 25.9 °C (1991–2020 normal). The coldest is January, at -13.8 °C.
How many rainy days does Casselman get per year?
Casselman sees about 137 rainy days a year, adding up to roughly 1067 mm of rainfall (1991–2020 normals).
How big is the gap between summer and winter in Casselman?
Between July and January, the temperature gap in Casselman runs to about 39.7 °C, based on the 1991–2020 normals.