Weather St. Catharines tomorrow

PLACES IN THE AREA

57 °F	55 °F	9 am
63 °F	61 °F	12 pm
66 °F	63 °F	3 pm
61 °F	59 °F	9 pm

sunrise 6:46 am
sunset 7:42 pm

HOURLY

Weather forecast St. Catharines Sept. 6, 2025

During the day morning overcast, in the afternoon cloudy. The highest temperature 66 °F. Total rainfall 0.01 in. At night partly cloudy. The lowest temperature 54 °F.

Interactive map weather Ontario

GPS: 43.1713; -79.2427

altitude: 341 ft
local time:

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Weather forecast St. Catharines, Ontario extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Saturday 09/06/2025
12 AM	cloudy	61 °F 59 °F	0.0 in	17 fps 12 mph west	29.9 in	69 %	48 °F	97 %	0%	0%	0%	97%
1 AM	cloudy	59 °F 57 °F	0.0 in	13 fps 9 mph west-southwest	29.9 in	70 %	48 °F	100 %	0%	0%	0%	100%
2 AM	cloudy	57 °F 55 °F	0.0 in	15 fps 10 mph southwest	29.9 in	73 %	48 °F	79 %	0%	0%	0%	79%
3 AM	cloudy	57 °F 55 °F	0.0 in	16 fps 11 mph south-southwest	29.9 in	75 %	48 °F	96 %	0%	1%	0%	96%
4 AM	cloudy	55 °F 54 °F	0.0 in	16 fps 11 mph south-southwest	29.9 in	76 %	48 °F	100 %	0%	0%	8%	100%
5 AM	overcast	55 °F 54 °F	0.0 in	15 fps 10 mph south-southwest	29.9 in	76 %	48 °F	100 %	0%	0%	27%	100%
6 AM	overcast	57 °F 55 °F	0.0 in	14 fps 10 mph south-southwest	29.9 in	74 %	48 °F	100 %	0%	4%	60%	100%
7 AM	overcast	57 °F 55 °F	0.0 in	15 fps 10 mph southwest	29.9 in	76 %	48 °F	100 %	0%	0%	97%	100%
8 AM	overcast	57 °F 55 °F	0.0 in	18 fps 12 mph southwest	29.9 in	73 %	48 °F	100 %	0%	0%	100%	100%
9 AM	light rain	57 °F 55 °F	0.00 in	18 fps 13 mph west-southwest	30.0 in	70 %	46 °F	100 %	0%	0%	100%	100%
10 AM	overcast	57 °F 55 °F	0.0 in	17 fps 11 mph west-southwest	30.0 in	69 %	46 °F	98 %	0%	0%	88%	90%
11 AM	cloudy	61 °F 59 °F	0.0 in	16 fps 11 mph west-southwest	30.0 in	61 %	46 °F	100 %	0%	3%	3%	100%
12 PM	cloudy	63 °F 59 °F	0.0 in	14 fps 10 mph west-southwest	30.0 in	52 %	45 °F	90 %	0%	0%	0%	90%
1 PM	overcast	64 °F 61 °F	0.0 in	19 fps 13 mph west	30.0 in	47 %	45 °F	98 %	0%	94%	53%	85%
2 PM	overcast	64 °F 61 °F	0.0 in	17 fps 12 mph west-northwest	29.9 in	46 %	43 °F	89 %	0%	21%	82%	36%
3 PM	overcast	66 °F 63 °F	0.0 in	19 fps 13 mph west	29.9 in	41 %	41 °F	96 %	0%	18%	96%	0%
4 PM	overcast	66 °F 63 °F	0.0 in	20 fps 13 mph west-southwest	29.9 in	44 %	43 °F	94 %	0%	1%	94%	0%
5 PM	overcast	66 °F 63 °F	0.0 in	20 fps 14 mph west-southwest	29.9 in	44 %	43 °F	99 %	0%	3%	99%	0%
6 PM	cloudy	64 °F 61 °F	0.0 in	22 fps 15 mph west	29.9 in	49 %	45 °F	78 %	0%	21%	78%	0%
7 PM	cloudy	63 °F 59 °F	0.0 in	21 fps 15 mph west-northwest	30.0 in	55 %	46 °F	39 %	0%	37%	19%	0%
8 PM	partly cloudy	61 °F 57 °F	0.0 in	19 fps 13 mph west-northwest	30.0 in	60 %	46 °F	14 %	0%	7%	8%	0%
9 PM	partly cloudy	61 °F 59 °F	0.0 in	16 fps 11 mph west	30.0 in	67 %	48 °F	18 %	0%	14%	14%	0%
10 PM	cloudy	59 °F 57 °F	0.0 in	15 fps 10 mph west-southwest	30.0 in	76 %	50 °F	52 %	0%	10%	52%	0%
11 PM	clear	57 °F 55 °F	0.0 in	13 fps 9 mph west-southwest	30.0 in	79 %	50 °F	5 %	0%	0%	5%	0%
Sunday 09/07/2025
12 AM	clear	55 °F 54 °F	0.0 in	13 fps 9 mph southwest	30.0 in	81 %	50 °F	3 %	0%	0%	3%	0%
1 AM	cloudy	55 °F 54 °F	0.0 in	14 fps 10 mph south-southwest	30.0 in	79 %	48 °F	84 %	0%	0%	84%	0%
2 AM	cloudy	55 °F 54 °F	0.0 in	15 fps 10 mph south-southwest	30.0 in	79 %	48 °F	85 %	0%	0%	85%	0%
3 AM	partly cloudy	55 °F 54 °F	0.0 in	15 fps 11 mph south-southwest	30.0 in	79 %	48 °F	26 %	0%	0%	26%	0%
4 AM	cloudy	55 °F 54 °F	0.0 in	18 fps 12 mph southwest	30.0 in	79 %	48 °F	85 %	0%	7%	84%	0%
5 AM	partly cloudy	57 °F 55 °F	0.0 in	20 fps 13 mph southwest	30.0 in	75 %	48 °F	18 %	0%	0%	18%	0%
6 AM	clear	55 °F 54 °F	0.0 in	21 fps 14 mph southwest	30.0 in	78 %	48 °F	3 %	0%	0%	3%	0%
7 AM	partly cloudy	54 °F 50 °F	0.0 in	22 fps 15 mph west-southwest	30.0 in	82 %	48 °F	24 %	0%	11%	22%	0%
8 AM	partly cloudy	55 °F 54 °F	0.0 in	24 fps 16 mph west-southwest	30.0 in	80 %	48 °F	27 %	0%	7%	25%	0%
9 AM	partly cloudy	57 °F 54 °F	0.0 in	27 fps 19 mph west	30.0 in	75 %	48 °F	18 %	0%	18%	1%	0%
10 AM	cloudy	59 °F 57 °F	0.0 in	24 fps 16 mph west	30.1 in	74 %	50 °F	39 %	0%	34%	12%	0%
11 AM	partly cloudy	59 °F 57 °F	0.0 in	20 fps 13 mph west-northwest	30.1 in	69 %	48 °F	20 %	0%	17%	7%	0%
12 PM	partly cloudy	61 °F 59 °F	0.0 in	16 fps 11 mph west-northwest	30.1 in	64 %	48 °F	15 %	0%	12%	7%	0%
1 PM	partly cloudy	61 °F 59 °F	0.0 in	14 fps 10 mph west-northwest	30.1 in	60 %	46 °F	14 %	0%	8%	8%	0%
2 PM	clear	63 °F 61 °F	0.0 in	13 fps 9 mph west-northwest	30.1 in	54 %	45 °F	8 %	0%	6%	4%	0%
3 PM	clear	64 °F 63 °F	0.0 in	13 fps 9 mph west	30.1 in	49 %	43 °F	8 %	0%	3%	7%	0%
4 PM	partly cloudy	64 °F 61 °F	0.0 in	18 fps 12 mph west-northwest	30.1 in	44 %	41 °F	26 %	0%	11%	19%	0%
5 PM	partly cloudy	64 °F 61 °F	0.0 in	21 fps 14 mph west	30.1 in	43 %	41 °F	27 %	0%	6%	26%	0%
6 PM	cloudy	64 °F 61 °F	0.0 in	22 fps 15 mph west-northwest	30.1 in	44 %	41 °F	43 %	0%	9%	43%	0%
7 PM	partly cloudy	63 °F 59 °F	0.0 in	24 fps 16 mph west-northwest	30.1 in	48 %	43 °F	29 %	0%	8%	25%	0%
8 PM	partly cloudy	61 °F 57 °F	0.0 in	27 fps 18 mph west-northwest	30.1 in	54 %	45 °F	24 %	0%	7%	20%	0%
9 PM	clear	61 °F 57 °F	0.0 in	25 fps 17 mph west-northwest	30.2 in	61 %	46 °F	12 %	0%	5%	10%	0%
10 PM	clear	59 °F 57 °F	0.0 in	22 fps 15 mph west	30.2 in	69 %	48 °F	4 %	0%	3%	3%	0%
11 PM	clear	57 °F 55 °F	0.0 in	19 fps 13 mph west-southwest	30.2 in	76 %	50 °F	0 %	0%	0%	0%	0%

St. Catharines, Ontario - information

State: Ontario

GPS coordinates: 43.1713; -79.2427

Time zone: America / Toronto time difference in hours with time in NY is -6 hours

Population: 133 113
Altitude: 341 ft
The administrative part:

Ontario, Toronto
, St. Catharines

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Weather St. Catharines, Ontario. Weather forecast St. Catharines.

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Data source

Weather forecast for St. Catharines is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information St. Catharines

data are always in the local time

Sun and light

Sept. 6, 2025

Sunrise:	Sunset:
6:46 am	7:42 pm
Noon:	Length of day:
1:15 pm	12:56
Start of civil twilight*:	End of civil twilight*:
6:17 am	8:12 pm
Start of nautical twilight*:	End of nautical twilight*:
5:43 am	8:45 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:07 am	9:21 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/05/2025 6:57 pm	09/06/2025 5:13 am
Next new moon:	Next full moon:
09/21/2025	09/07/2025