Live Weather & Forecast
Weather in Grand Valley
Ontario, Canada · Real-time conditions & 3-day outlook
4°C
Feels like -0°C
40°F / Feels 32°F
Patchy rain nearby
Grand Valley, Ontario
🌙 Nighttime
Updated: 2026-04-25 04:00
Humidity
87%
Wind
21.2 km/h E
Wind Gust
31.2 km/h
Pressure
1010 mb
Visibility
9 km
UV Index
0
(Low)
Precipitation
0.37 mm
Cloud Cover
0%
Dew Point
-1°C
Wind Degree
88°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
182.9 μg/m³
NO₂
7.2 μg/m³
O₃
73 μg/m³
SO₂
3 μg/m³
PM 2.5
11.2 μg/m³
PM 10
12.6 μg/m³
Today's Hourly Forecast
24-hour breakdown for Grand Valley, Ontario
12 AM
4°
Patchy rain nearby
1 AM
4°
Patchy rain nearby
2 AM
4°
Patchy rain nearby
3 AM
4°
Patchy rain nearby
4 AM
4°
Patchy rain nearby
5 AM
4°
Moderate rain at times
6 AM
3°
Moderate rain at times
7 AM
3°
Patchy rain nearby
8 AM
3°
Light rain
9 AM
4°
Light rain
10 AM
4°
Light rain
11 AM
4°
Light drizzle
12 PM
5°
Patchy rain nearby
1 PM
5°
Patchy rain nearby
2 PM
6°
Light drizzle
3 PM
7°
Patchy rain nearby
4 PM
8°
Overcast
5 PM
8°
Cloudy
6 PM
8°
Sunny
7 PM
7°
Sunny
8 PM
6°
Sunny
9 PM
5°
Clear
10 PM
4°
Clear
11 PM
4°
Clear
3-Day Forecast
Daily overview for Grand Valley, Ontario
Today
Moderate rain
9°
/
3°
🌧️ 88% chance of rain
💧 Avg. humidity: 82%
💨 Max wind: 26.6 km/h
🌧️ Total precip: 10.79 mm
☀️ UV Index: 2.4
🌅 Sunrise: 06:20 AM
🌇 Sunset: 08:16 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Sunny
13°
/
2°
🌧️ 0% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 12.2 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 6.4
🌅 Sunrise: 06:19 AM
🌇 Sunset: 08:17 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Mon, Apr 27
Sunny
15°
/
4°
🌧️ 0% chance of rain
💧 Avg. humidity: 73%
💨 Max wind: 25.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.3
🌅 Sunrise: 06:17 AM
🌇 Sunset: 08:18 PM
🌙 Waxing Gibbous
🌑 Moon: 79% lit
Best Time to Visit Grand Valley
Plan your trip to Grand Valley, 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 Grand Valley?
Current conditions in Grand Valley: Patchy rain nearby, temperature 4°C, humidity 87%.
What is the best time to visit Grand Valley?
The best time to visit Grand Valley is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Grand Valley?
Grand Valley is located at approximately 43.9° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Grand Valley?
The wettest period in Grand Valley is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Grand Valley?
For visits to Grand Valley during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What are the public holidays in Grand Valley in 2026?
View the 2026 public holidays for Grand Valley on our Holidays page.
What are the GPS coordinates used for the weather forecast in Grand Valley?
The weather forecast for Grand Valley uses coordinates 43.8991, -80.3152.
What is the current temperature outside in Grand Valley?
The current outdoor temperature in Grand Valley is 4°C (39°F) with patchy rain nearby.
What is the hourly weather forecast for Grand Valley today?
Today's hour-by-hour weather breakdown for Grand Valley 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 Grand Valley tomorrow hour by hour?
Tomorrow's forecast for Grand Valley shows a high of 13°C and a low of 2°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Grand Valley?
There is a 88% chance of rain in Grand Valley today. Check the hourly forecast above for a time-by-time breakdown of when rain is most likely.
Is it going to rain today in Grand Valley?
Yes, there is a 88% chance of rain in Grand Valley today — consider carrying an umbrella. Check the hourly forecast above for the most likely rain windows.