Weather forecast for tomorrowSarnia, Canada

Weather forecast for tomorrow

Saturday 24. Oct 2026

  • 18°C
  • 4°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 20%
  • Precipitation: 0mm
  • Wind: 6km/hESE 121°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 7:54 am EDT
  • Sunset: 6:33 pm EDT
  • ▼
Tomorrow, in Sarnia, mainly sunny skies with just a few high clouds are also anticipated.
Temperature fluctuations between an enjoyable 18°C and an icy 4°C are forecasted.
Tomorrow, the predicted temperature will be slightly warmer than the standard October high of 14.6°C.
Sunrise will be at 7:54 am and sunset at 6:33 pm; tomorrow's daylight will last for 10h and 39min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 17°C.
Coldest hour: 6 am 3°C.

Chance of precipitation

Highest chance: 6 am 8%.

Hourly weather forecast

  • 12 am
  • 7°C
  • Feels like:
    6°C
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 8km/hESE 116°
  • Humidity: 92%
  • Pressure: 1030mbar
  • Visibility: 13km
  • UV index: 0
  • ▼
  • 2 am
  • 6°C
  • Feels like:
    5°C
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 6km/hESE 118°
  • Humidity: 93%
  • Pressure: 1030mbar
  • Visibility: 10km
  • UV index: 0
  • ▼
  • 4 am
  • 4°C
  • Feels like:
    3°C
Clear
Clear
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 5km/hESE 116°
  • Humidity: 95%
  • Pressure: 1030mbar
  • Visibility: 7km
  • UV index: 0
  • ▼
  • 6 am
  • 3°C
  • Feels like:
    3°C
Clear
Clear
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 4km/hESE 114°
  • Humidity: 97%
  • Pressure: 1031mbar
  • Visibility: 2km
  • UV index: 0
  • ▼
Sunrise: 7:54 am
  • 8 am
  • 3°C
  • Feels like:
    3°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 20%
  • Precipitation: 0mm
  • Wind: 4km/hESE 104°
  • Humidity: 98%
  • Pressure: 1031mbar
  • Visibility: 3km
  • UV index: 0
  • ▼
  • 10 am
  • 9°C
  • Feels like:
    9°C
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0mm
  • Wind: 5km/hESE 111°
  • Humidity: 79%
  • Pressure: 1032mbar
  • Visibility: 16km
  • UV index: 1
  • ▼
  • 12 pm
  • 14°C
  • Feels like:
    14°C
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 5km/hESE 120°
  • Humidity: 62%
  • Pressure: 1031mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 2 pm
  • 17°C
  • Feels like:
    17°C
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 5km/hSE 132°
  • Humidity: 52%
  • Pressure: 1030mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 4 pm
  • 18°C
  • Feels like:
    18°C
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0mm
  • Wind: 5km/hSE 135°
  • Humidity: 48%
  • Pressure: 1029mbar
  • Visibility: 16km
  • UV index: 1
  • ▼
  • 6 pm
  • 16°C
  • Feels like:
    16°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 5km/hSE 130°
  • Humidity: 61%
  • Pressure: 1029mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 6:33 pm
  • 8 pm
  • 11°C
  • Feels like:
    11°C
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 5km/hSE 146°
  • Humidity: 82%
  • Pressure: 1030mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 10 pm
  • 9°C
  • Feels like:
    9°C
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 6km/hSSE 160°
  • Humidity: 91%
  • Pressure: 1031mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Tomorrow, on Saturday, primarily dry and sunny and occasionally gloomy weather is expected.
The temperature will vary between the lowest temperature of 3°C and the highest temperature of 18°C. The warmest part of the day will be around 4 pm.
The forecasted high will be moderately higher than the typical October maximum of 14.6°C. The lowest temperature is more similar to November's average minimum of 1.5°C than the usual minimum of 7.8°C in October.
Updated: Oct 23, 2026 @ 10:48:13 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, in Sarnia, expect plenty of sunshine and only a few scattered clouds.

Tomorrow, the highest temperature will be 18°C, while the lowest temperature will be 4°C.
Tomorrow, the highest temperature will be relatively higher than the average maximum temperature in October. Tomorrow, the lowest temperature will be also a couple of degrees lower than the average low temperature.

On Saturday, in Sarnia, sunrise will be at 7:54 am and sunset at 6:33 pm (EDT).

In Sarnia, the length of the day tomorrow will be 10h and 39min.