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⚠Special Weather Statement ▶
10:06 p.m. EDT Monday 7 September 2026

Heavy showers and thunderstorms tonight.

What:
20 to 40 millimetres of rain

When:
Overnight into Tuesday morning

Discussion:
Showers and thunderstorms have arrived from Manitoba over the Lake of the Woods area and will continue moving northeastward tonight. Rain may be locally heavy at times with reduced visibility.

Water will possibly pool on roads and in low-lying areas. Rainfall warnings may be required.

For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit Ontario.ca/floods for the latest details.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on social media using #ONStorm.

In effect for:
  • Fort Frances - Emo - Rainy River
Observed at: Fort Frances
Date: 11:00 PM CDT Monday 7 September 2026
Temp.: 21 °C
Wind: SSE 11 km/h
Humidity: 92 %
Dew point: 19 °C
Pressure: 101.2 kPa
Tendency: 0.08 kPa
Visibility: km 		Sunrise: 6:39
Sunset: 19:43
Normals:
Max 19°C Min 8°C
 Extended Forecast - Environment Canada
  Tue, 8 Sep
Showers at times heavy
Showers at times heavy
Max: 27°C
 Wed, 9 Sep
Chance of showers (60%)
Chance of showers
Max: 18°C
 Thu, 10 Sep
Sunny
Sunny
Max: 24°C
 Fri, 11 Sep
Chance of showers (30%)
Chance of showers
Max: 23°C
 Sat, 12 Sep
Chance of showers (40%)
Chance of showers
Max: 17°C
 Sun, 13 Sep
Chance of showers (30%)
Chance of showers
Max: 13°C
Tonight
Showers at times heavy
Showers at times heavy
Min: 19°C
 Night
Chance of showers (60%)
Chance of showers
Min: 13°C
 Night
Chance of showers (30%)
Chance of showers
Min: 9°C
 Night
Clear
Clear
Min: 14°C
 Night
Chance of showers (40%)
Chance of showers
Min: 10°C
 Night
Chance of showers (30%)
Chance of showers
Min: 9°C

Forecast

Fort Frances, ON (Issued: 4:00 PM EDT Monday 7 September 2026)

Tonight
Cloudy. 40 percent chance of showers or drizzle early this evening. Showers at times heavy beginning this evening. Risk of a thunderstorm this evening and overnight. Local amount 30 to 40 mm. Low 19.
Tue, 8 Sep
Showers at times heavy ending in the morning then clearing. Risk of a thunderstorm early in the morning. High 27. Humidex 32. UV index 2 or low.
Night
Clear early in the evening then partly cloudy with 60 percent chance of showers late in the evening and overnight. Wind becoming southwest 20 km/h in the evening. Low 13.
Wed, 9 Sep
A mix of sun and cloud with 60 percent chance of showers. High 18.
Night
Cloudy periods with 30 percent chance of showers. Low 9.
Thu, 10 Sep
Sunny. High 24.
Night
Clear. Low 14.
Fri, 11 Sep
A mix of sun and cloud with 30 percent chance of showers. High 23.
Night
Cloudy periods with 40 percent chance of showers. Low 10.
Sat, 12 Sep
A mix of sun and cloud with 40 percent chance of showers. High 17.
Night
Cloudy with 30 percent chance of showers. Low 9.
Sun, 13 Sep
Cloudy with 30 percent chance of showers. High 13.

24 Hour Forecast - Fort Frances, ON

Date/Time Temp.
(°C)
Weather Conditions
LOP †		 Wind
(km/h)
8 September 2026
1 AM 20 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
2 AM 19 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
3 AM 19 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
4 AM 19 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
5 AM 19 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
6 AM 19 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
7 AM 20 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
8 AM 20 Showers at times heavy. Risk of thunderstorms (100%)  Showers at times heavy. Risk of thunderstorms 100 S 15
9 AM 20 Overcast (20%)  Overcast 20 S 15
10 AM 21 Overcast (20%)  Overcast 20 S 15
11 AM 21 Overcast (20%)  Overcast 20 S 15
12 PM 22 Cloudy (20%)  Cloudy 20 S 15
1 PM 24 Mainly cloudy (20%)  Mainly cloudy 20 S 15
2 PM 25 A mix of sun and cloud (20%)  A mix of sun and cloud 20 SW 15
3 PM 26 A mix of sun and cloud (20%)  A mix of sun and cloud 20 SW 15
4 PM 26 Mainly sunny (20%)  Mainly sunny 20 SW 15
5 PM 27 Sunny (20%)  Sunny 20 SW 15
6 PM 25 Sunny (20%)  Sunny 20 SW 15
7 PM 23 Sunny (20%)  Sunny 20 SW 15
8 PM 21 Sunny (20%)  Sunny 20 SW 20
9 PM 20 Chance of showers (60%)  Chance of showers 60 SW 20
10 PM 20 Chance of showers (60%)  Chance of showers 60 SW 20
11 PM 19 Chance of showers (60%)  Chance of showers 60 SW 20
9 September 2026
12 AM 19 Chance of showers (60%)  Chance of showers 60 SW 20
 
† Likelihood of Precipitation (LOP) as described in the public forecast as a chance of measurable precipitation for a period of time.
  Nil: 0%
  Low: 40% or below
  Medium: 60% or 70%
  High: Above 70%

Environment Canada