St. Catharines weather — 10-day forecast

Temperature, rain, wind and feels-like in St. Catharines, hour by hour and over 10 days, with the seasonal normal for context.

Now

Reading from 20:00 · NOAA HRRR model

15 °C

Overcast

Feels like 12 °C

12.2 km/hforce 2

Next 12 h

  • 2015°
  • 2114°
  • 2213°
  • 2313°
  • 0012°
  • 0112°
  • 0212°
  • 0311°
  • 0411°
  • 0511°
  • 0610°
  • 0710°
  • 07:31Sunrise
  • 0810°

↑ 15°20:00↓ 10°08:00

Humidity
66 %
Dew point
9 °C
Gusts
22.7 km/h
Clouds
100 %
Pressure
1,020 hPa ↑

Grid point 0.7 km away · 3.0 km grid · elevation 103 m

Air quality

The European air-quality index for the city, and the pollutants that set it.

Reading from 20:00
19
Good

Index set by Ozone

Ozone
48.2µg/m³
PM2.5
2.2µg/m³
PM10
2.2µg/m³
Nitrogen dioxide
9.8µg/m³
Sulphur dioxide
2.6µg/m³
Carbon monoxide
176.0µg/m³
Dust (AOD)
0.00

Generated using Copernicus Atmosphere Monitoring Service information

Hour by hour

Step-by-step detail: temperature, wind, cloud cover and ultraviolet.

Estimated from a deterministic model, not an ensemble probability.
°C

10 days

Each day's extremes and the chance of rain, out to the end of the run.

6° → 18°

Rain probability (> 1 mm): 50 ECMWF ensemble members.

  • Today

    Overcast10 %

    17°

    13°

  • Thu

    Overcast100 %

    13°

    10°

  • Fri

    Rain100 %

    18°

    10°

  • Sat

    Mainly clear90 %

    10°

    6°

  • Sun

    Clear sky

    15°

    6°

  • Mon

    Clear sky

    17°

    9°

  • Tue

    Mainly clear

    16°

    7°

  • Wed

    Partly cloudy

    16°

    9°

  • Thu

    Clear sky

    14°

    10°

  • Fri

    Overcast

    13°

    11°

Gusts · Fri 63.3 km/h · Sat 57.3 km/h

Sun and UV

Sunrise, sunset, day length and ultraviolet intensity.

Max UV3low
Sunrise
07:30
Daylight
11 h 06
Sunset
18:36

Radiation · 3.0 MJ/m²

Today in St. Catharines the mean temperature will be 15.0 °C — +2.7 °C against the normal for 14 October, measured from 1940 to 2026. (1,290 obs.)

St. Catharines climate — normals and trends →