Current weather
3:00 PM21°C
Mostly Cloudy
High 23° · Low 13° · 40%
- Wind
- N 10 km/h
- Wind gusts
- 42 km/h
- Humidity
- 80%
- Air quality (AQHI)
- 1.7 · Low risk
- UV index
- 1 · Low
More details
- Dew point
- 17°C
- Pressure
- 102.2 kPa ↘ falling
- Visibility
- 10 km
- Sunrise
- 6:58 AM
- Sunset
- 7:24 PM
- Daylight
- 12 h 26 min
Observed at St. Catharines / Niagara District Airport, 3:00 PM EDT · Environment and Climate Change Canada
Hourly forecast
Hourly →- Now20°13%
- 4 PM23°40%
- 5 PM23°20%
- 6 PM22°20%
- 7 PM22°20%
- 8 PM21°20%
- 9 PM20°20%
- 10 PM19°20%
- 11 PM18°10%
- Fri
- 12 AM17°10%
- 1 AM16°10%
- 2 AM15°10%
- 3 AM14°10%
- 4 AM14°10%
- 5 AM13°10%
- 6 AM14°10%
- 7 AM15°10%
- 8 AM16°10%
- 9 AM17°10%
- 10 AM17°10%
- 11 AM18°10%
- 12 PM19°10%
- 1 PM20°10%
- 2 PM21°10%
14-day forecast
Full 14-day →TodaySep 1723°13°Chance of showersPartly cloudy40%
Day
Mainly cloudy. 40 percent chance of showers this afternoon. High 23. Humidex 28. UV index 6 or high.
- Humidex
- 28
- Wind
- N 15 km/h
- Precipitation
- 40% · 0 mm
- UV index (max)
- 6 High
- Air quality (AQHI)
- 3 · Low risk
Night
Mainly cloudy. Clearing after midnight. Low 13.
- Low
- 13°
- Wind
- N 15 km/h
Sunrise6:58 AM
Sunset7:24 PM
Daylight12 h 26 min
Normal21° / 12°
FriSep 1822°14°A mix of sun and cloudCloudy periods11%
Day
A mix of sun and cloud. Clearing early in the afternoon. High 22. UV index 6 or high.
- Wind
- N 15 km/h
- Precipitation
- 11% · 0 mm
- UV index (max)
- 6 High
- Air quality (AQHI)
- 2 · Low risk
Night
Cloudy periods. Low 14.
- Low
- 14°
Sunrise7:00 AM
Sunset7:21 PM
Daylight12 h 21 min
SatSep 1919°14°Chance of showersChance of showers70%
Day
Cloudy with 40 percent chance of showers. High 19.
- Precipitation
- 40% · 4 mm
- UV index (max)
- 4 Moderate
Night
Cloudy with 70 percent chance of showers. Low 14.
- Low
- 14°
- Precipitation
- 70%
Sunrise7:01 AM
Sunset7:20 PM
Daylight12 h 18 min
SunSep 2020°10°Chance of showersChance of showers70%
Day
Cloudy with 70 percent chance of showers. High 20.
- Precipitation
- 70% · 5 mm
- UV index (max)
- 2 Low
Night
Cloudy periods with 30 percent chance of showers. Low 10.
- Low
- 10°
- Precipitation
- 30%
Sunrise7:02 AM
Sunset7:18 PM
Daylight12 h 15 min
MonSep 2117°11°A mix of sun and cloudCloudy77%
Day
A mix of sun and cloud. High 17.
- Precipitation
- 77% · 4 mm
- UV index (max)
- 4 Moderate
Night
Cloudy. Low 11.
- Low
- 11°
Sunrise7:03 AM
Sunset7:16 PM
Daylight12 h 13 min
TueSep 2217°12°Chance of showersChance of showers60%
Day
Cloudy with 30 percent chance of showers. High 17.
- Precipitation
- 30% · 25 mm
- UV index (max)
- 4 Moderate
Night
Cloudy periods with 60 percent chance of showers. Low 12.
- Low
- 12°
- Precipitation
- 60%
Sunrise7:04 AM
Sunset7:14 PM
Daylight12 h 10 min
WedSep 2319°16°Chance of showers40%
Day
Cloudy with 40 percent chance of showers. High 19.
- Precipitation
- 40% · 0.6 mm
- UV index (max)
- 5 Moderate
Night
Low 16.
- Low
- 16°
Sunrise7:05 AM
Sunset7:12 PM
Daylight12 h 7 min
Days 8–14 · trend, lower confidence
ThuSep 2421°15°Mostly cloudyNight low 15°75%
Day
Mostly cloudy. High 21.
- Wind
- SW 39 km/h
- Wind gusts
- 64 km/h
- Precipitation
- 75% · 5 mm
- UV index (max)
- 5 Moderate
Night
Low 15.
- Low
- 15°
Sunrise7:06 AM
Sunset7:11 PM
Daylight12 h 4 min
SourceExtended outlook
FriSep 2515°12°ShowersNight low 12°58%
Day
Showers. High 15.
- Wind
- W 42 km/h
- Wind gusts
- 48 km/h
- Precipitation
- 58% · 2 mm
- UV index (max)
- 5 Moderate
Night
Low 12.
- Low
- 12°
Sunrise7:07 AM
Sunset7:09 PM
Daylight12 h 1 min
SourceExtended outlook
SatSep 2617°11°SunnyNight low 11°17%
Day
Sunny. High 17.
- Wind
- W 29 km/h
- Wind gusts
- 34 km/h
- Precipitation
- 17% · 0.1 mm
- UV index (max)
- 5 Moderate
Night
Low 11.
- Low
- 11°
Sunrise7:08 AM
Sunset7:07 PM
Daylight11 h 58 min
SourceExtended outlook
SunSep 2720°13°SunnyNight low 13°5%
Day
Sunny. High 20.
- Wind
- W 25 km/h
- Wind gusts
- 38 km/h
- Precipitation
- 5% · 0 mm
- UV index (max)
- 6 High
Night
Low 13.
- Low
- 13°
Sunrise7:10 AM
Sunset7:05 PM
Daylight11 h 55 min
SourceExtended outlook
MonSep 2820°16°Mostly cloudyNight low 16°12%
Day
Mostly cloudy. High 20.
- Wind
- SW 24 km/h
- Wind gusts
- 43 km/h
- Precipitation
- 12% · 0 mm
- UV index (max)
- 5 Moderate
Night
Low 16.
- Low
- 16°
Sunrise7:11 AM
Sunset7:03 PM
Daylight11 h 52 min
SourceExtended outlook
TueSep 2922°16°Mostly cloudyNight low 16°14%
Day
Mostly cloudy. High 22.
- Wind
- SW 22 km/h
- Wind gusts
- 39 km/h
- Precipitation
- 14% · 0 mm
- UV index (max)
- 6 High
Night
Low 16.
- Low
- 16°
Sunrise7:12 AM
Sunset7:02 PM
Daylight11 h 49 min
SourceExtended outlook
WedSep 3019°13°SunnyNight low 13°65%
Day
Sunny. High 19.
- Wind
- N 31 km/h
- Wind gusts
- 32 km/h
- Precipitation
- 65% · 4 mm
- UV index (max)
- 5 Moderate
Night
Low 13.
- Low
- 13°
Sunrise7:13 AM
Sunset7:00 PM
Daylight11 h 46 min
SourceExtended outlook
Sun & Moon
Moon calendar →Sunrise6:58 AM
Sunset7:24 PM
Daylight12 h 26 min
MoonFirst Quarter40% lit · rise 2:09 PM · set 10:30 PM
Climate · monthly normals
Full climate →| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High | 0° | 1° | 5° | 12° | 19° | 24° | 27° | 26° | 21° | 15° | 9° | 3° |
| Low | -7° | -6° | -3° | 3° | 8° | 14° | 17° | 16° | 13° | 7° | 2° | -4° |
| Precip | 64 mm | 57 mm | 65 mm | 74 mm | 76 mm | 81 mm | 85 mm | 75 mm | 84 mm | 74 mm | 86 mm | 70 mm |
ECCC
Activities today
Derived from the forecastLaundry dayPoorLine-drying weather
GrillingGreatFire up the grill
RunningPoorLace up outside
PatioFairDinner outdoors
Forecast: Environment and Climate Change Canada (St. Catharines - Grimsby - Northern Niagara Region), issued 11:16 AM · Days 8–14: WeatherAPI.com · weather.gc.ca · 43.1713°N, 79.2427°W · Elevation 102 m · Population 136,803 · Time zone America/Toronto