Live Weather & Forecast
Weather in Chalk River
Ontario, Canada · Real-time conditions & 3-day outlook
4°C
Feels like 3°C
40°F / Feels 37°F
Partly cloudy
Chalk River, Ontario
🌞 Daytime
Updated: 2026-04-25 07:15
Humidity
56%
Wind
6.8 km/h ENE
Wind Gust
10.8 km/h
Pressure
1018 mb
Visibility
24 km
UV Index
0.1
(Low)
Precipitation
0 mm
Cloud Cover
75%
Dew Point
-2.2°C
Wind Degree
68°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
160.9 μg/m³
NO₂
1.8 μg/m³
O₃
81 μg/m³
SO₂
1.9 μg/m³
PM 2.5
2.4 μg/m³
PM 10
2.6 μg/m³
Today's Hourly Forecast
24-hour breakdown for Chalk River, Ontario
12 AM
5°
Clear
1 AM
5°
Clear
2 AM
4°
Clear
3 AM
4°
Clear
4 AM
3°
Clear
5 AM
3°
Clear
6 AM
2°
Clear
7 AM
4°
Partly cloudy
8 AM
4°
Sunny
9 AM
6°
Sunny
10 AM
7°
Sunny
11 AM
9°
Sunny
12 PM
10°
Sunny
1 PM
11°
Sunny
2 PM
12°
Sunny
3 PM
12°
Sunny
4 PM
13°
Sunny
5 PM
13°
Sunny
6 PM
12°
Sunny
7 PM
9°
Sunny
8 PM
6°
Sunny
9 PM
5°
Clear
10 PM
4°
Clear
11 PM
3°
Clear
3-Day Forecast
Daily overview for Chalk River, Ontario
Today
Sunny
14°
/
2°
🌧️ 0% chance of rain
💧 Avg. humidity: 56%
💨 Max wind: 14.4 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 4.6
🌅 Sunrise: 06:06 AM
🌇 Sunset: 08:09 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Sunny
17°
/
-0°
🌧️ 0% chance of rain
💧 Avg. humidity: 61%
💨 Max wind: 7.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 5.9
🌅 Sunrise: 06:04 AM
🌇 Sunset: 08:11 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Mon, Apr 27
Sunny
18°
/
3°
🌧️ 0% chance of rain
💧 Avg. humidity: 66%
💨 Max wind: 16.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.3
🌅 Sunrise: 06:02 AM
🌇 Sunset: 08:12 PM
🌙 Waxing Gibbous
🌑 Moon: 79% lit
Best Time to Visit Chalk River
Plan your trip to Chalk River, Canada around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Chalk River?
Current conditions in Chalk River: Partly cloudy, temperature 4°C, humidity 56%.
What is the best time to visit Chalk River?
The best time to visit Chalk River is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Chalk River?
Chalk River is located at approximately 46° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Chalk River?
The wettest period in Chalk River is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Chalk River?
For visits to Chalk River during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Chalk River in 2026?
View the 2026 public holidays for Chalk River on our Holidays page.
What are the GPS coordinates used for the weather forecast in Chalk River?
The weather forecast for Chalk River uses coordinates 46.0186, -77.4494.
What is the current temperature outside in Chalk River?
The current outdoor temperature in Chalk River is 4°C (39°F) with partly cloudy.
What is the hourly weather forecast for Chalk River today?
Today's hour-by-hour weather breakdown for Chalk River is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Chalk River tomorrow hour by hour?
Tomorrow's forecast for Chalk River shows a high of 17°C and a low of -0°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Chalk River?
Rain is not expected in Chalk River today. Current forecast shows no significant rain probability.
Is it going to rain today in Chalk River?
No, rain is not forecast for Chalk River today. Current conditions show clear to partly cloudy skies.