Measurements:
°C
°F
Thunder Bay
24°F
SE 5 mph
Feels like: 16°F
Precip: 0%
World Resorts Canada Thunder Bay Weather September Weather in Thunder Bay

Thunder Bay Weather: September

Average Day Temperature: 64.2°F
Average Night Temperature: 53.8°F
Sea Water Temperature: 61.4°F
Number of Sunny Days: 15 days
Sunshine Hours: 11.7 - 13.4 hours
Number of Rainy Days: 2 days
Precipitation Totals: 0.8 in

Air Temperature in September, °F

Select Year: 2024 2023 2022

The highest day temperature in September 2024 was 86°F. The lowest night temperature was 38°F. The average values for day and night temperatures during September were 69.7°F и 55.6°F respectivly.

Thunder Bay Water Sea Temperature in September, °F

Select Year: 2024 2023 2022

The average sea surface temperature in September 2024 for Thunder Bay was 65.2°F. The maximum and minimum values were 62.4°F and 67.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Thunder Bay is 0.8 in.

Wind Speed in September, mph

The average wind speed in September is 7.0 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Thunder Bay in September is 7.8 hours.

Best Time to Visit Thunder Bay
The most sunny months:
September 15 days
August 14 days
July 12 days
The most warm months:
July 71.4 °F
August 71.1 °F
June 64.2 °F
Warmest sea temperature:
August 65.0 °F
September 61.4 °F
July 60.3 °F
The most cold months:
February 10.2 °F
January 11.1 °F
December 19.0 °F
The most rainy months:
August 3 days
September 2 days
April 2 days
The most windy months:
November 9 mph
December 9 mph
April 9 mph

Thunder Bay on the Weather Map

Canada Resorts:
NAME
Halifax +38
Moncton +42
Montreal +38
Ottawa +34
Prince Edward Island +46
Quebec +36
Saint John +34
St. John's +44
Sydney +48
Thunder Bay +24
Toronto +40
Vancouver +44
Victoria +44
Winnipeg +20
Yellowknife -26
24 Hours Weather Forecast
Thunder Bay
Local time: 01:39
24 nov, sunday
0300 24°F
SE
5 mph
0600 24°F
S
6 mph
0900 26°F
S
5 mph
1200 28°F
SW
5 mph
1500 30°F
W
3 mph
1800 30°F
W
3 mph
2100 28°F
SW
4 mph
25 nov, monday
0000 30°F
SW
4 mph