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Sainte-Catherine weather forecast

Quebec, Canada · Toronto time · 45.40°, -73.58°

Current conditions · 8:00 PM local

Current conditions in Sainte-Catherine

20°C

Overcast

Feels like 20°C

Humidity
77%
Wind
8 km/h WSW
Gusts
22 km/h
UV index
0.6
Visibility
20.1 km

Right now

Conditions in Sainte-Catherine at the moment: overcast, 20 °C. It feels close to the actual reading at 20 °C. Wind is from the WSW at 8 km/h. Humidity stands at 77% with sea-level pressure near 1013 hPa.

At a glance

Today

23° / 15°

Thunderstorm · 58% chance of rain

Tomorrow

24° / 14°

Moderate drizzle

Upcoming · to Saturday

24° / 13°

Highs 24°, lows 13°. The most active day looks like Friday, when rain chances peak at 65%.

Next 3 days

Today looks like thunderstorm; temperatures run from 15 °C up to 22 °C. Rain chance peaks at 58% with around 0.8 mm possible. Tomorrow looks like moderate drizzle; temperatures run from 14 °C up to 24 °C. Tuesday brings light drizzle with a high of 23 °C and a low of 16 °C.

Today

Sun, Jun 21

Thunderstorm

23°15°

Rain chance
58%
Precip
0.8 mm
Max wind
20 km/h

Tomorrow

Mon, Jun 22

Moderate drizzle

24°14°

Rain chance
16%
Precip
0.7 mm
Max wind
15 km/h

Tuesday

Tue, Jun 23

Light drizzle

23°16°

Rain chance
16%
Precip
1 mm
Max wind
17 km/h

Next 48 hours

  1. 12 AM16°28%12 km/h
  2. 1 AM16°41%9 km/h
  3. 2 AM16°33%10 km/h
  4. 3 AM16°30%8 km/h
  5. 4 AM15°22%9 km/h
  6. 5 AM15°12%11 km/h
  7. 6 AM15°9%9 km/h
  8. 7 AM16°9%13 km/h
  9. 8 AM17°6%12 km/h
  10. 9 AM18°6%16 km/h
  11. 10 AM19°5%11 km/h
  12. 11 AM19°4%15 km/h
  13. 12 PM21°5%14 km/h
  14. 1 PM23°12%18 km/h
  15. 2 PM21°17%20 km/h
  16. 3 PM19°34%11 km/h
  17. 4 PM20°58%9 km/h
  18. 5 PM22°37%8 km/h
  19. 6 PM22°22%10 km/h
  20. 7 PM21°16%14 km/h
  21. 8 PM20°16%8 km/h
  22. 9 PM18°15%7 km/h
  23. 10 PM18°9%6 km/h
  24. 11 PM17°8%4 km/h
  25. 12 AM16°3%8 km/h
  26. 1 AM16°2%7 km/h
  27. 2 AM15°1%5 km/h
  28. 3 AM15°1%7 km/h
  29. 4 AM15°0%8 km/h
  30. 5 AM14°0%12 km/h
  31. 6 AM15°0%9 km/h
  32. 7 AM16°0%11 km/h
  33. 8 AM18°0%10 km/h
  34. 9 AM19°0%9 km/h
  35. 10 AM20°0%6 km/h
  36. 11 AM22°0%4 km/h
  37. 12 PM23°1%5 km/h
  38. 1 PM23°2%8 km/h
  39. 2 PM24°3%7 km/h
  40. 3 PM24°10%7 km/h
  41. 4 PM24°14%10 km/h
  42. 5 PM24°16%13 km/h
  43. 6 PM18°15%15 km/h
  44. 7 PM19°7%9 km/h
  45. 8 PM19°6%6 km/h
  46. 9 PM17°4%12 km/h
  47. 10 PM17°6%3 km/h
  48. 11 PM17°8%4 km/h

In depth

The weather picture for Sainte-Catherine opens with overcast; it's 20 °C out, feeling like 20 °C. Today's forecast calls for thunderstorm, topping out near 22 °C before falling back to 15 °C overnight. Winds blow mainly from the WSW around 20 km/h, with gusts up to 35 km/h. Daytime highs hold fairly steady this week, staying within 21 to 24 °C. Rain is in the picture on Tuesday, Thursday, Friday, with roughly 13 mm expected in total across the week. Tomorrow brings moderate drizzle with a high of 24 °C and a 16% chance of precipitation. The UV index reaches 7 today, so sun protection is sensible during the middle of the day. Sunrise comes at 05:06 and sunset at 20:46, giving 15.7 hours of daylight. Current humidity sits at 77% with pressure near 1013 hPa. Looking further out, Thursday shows slight rain showers with a high around 24 °C, while Saturday ends the week at 23 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.

Air quality

33

Good

US AQI · European AQI 20

Air quality in Sainte-Catherine is currently good, with a US AQI of 33 (European AQI 20). The dominant pollutant right now is ozone. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 5 µg/m³.

Pollutants

PM2.5
5 µg/m³
PM10
5.1 µg/m³
Ozone (O₃)
51 µg/m³
NO₂
11.6 µg/m³
SO₂
2.8 µg/m³
CO
155 µg/m³
Dust
0 µg/m³

Sun & UV

Sunrise
5:06 AM
Sunset
8:46 PM
Daylight
15h 40m
Max UV
7.15 High

Wind

Wind
8 km/h
Gusts
22 km/h
Direction
WSW (250°)

Farming weather

Soil temperatures today read surface 16.7 °C, 6 cm 17.9 °C, 18 cm 17.9 °C, 54 cm 15.4 °C. Soil moisture sits at 0-1 cm at 0.46 m³/m³, 3-9 cm at 0.46 m³/m³, 27-81 cm at 0.47 m³/m³. For wheat, the root-zone reading is above the ideal 0.2-0.35 m³/m³ band. ET0 of 26 mm modestly outpaces the 13 mm of forecast rain; light supplemental irrigation may help. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Projected growing degree days over the next week: wheat 97, maize 59.

Topsoil moisture
0.458 m³/m³
Soil temp
16°C
ET₀ today
3.17 mm
Spray window
~5:00
Rain (next 7d)
12.8 mm
Wind
8 km/h
Humidity
77%

Full farming outlook for Sainte-Catherine →

Advisory summary

No weather alert thresholds are crossed for Sainte-Catherine in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.

All data for Sainte-Catherine
Every forecast variable for Sainte-Catherine with human-readable labels
VariableValue
CitySainte-Catherine, Quebec, Canada
Coordinates45.40008, -73.58248
Elevation25 m
TimezoneAmerica/Toronto
Population16,762
Observed at (local)8:00 PM
Temperature (2 m)20°C
Apparent temperature20°C
Relative humidity (2 m)77%
Dew point (2 m)15°C
Precipitation (last hour)0 mm
Rain0 mm
Showers0 mm
Snowfall0 cm
Weather code (WMO)3
Cloud cover100%
Surface pressure1010 hPa
Sea-level pressure1013 hPa
Wind speed (10 m)8 km/h
Wind gusts (10 m)22 km/h
Wind direction (10 m)250° (WSW)
Visibility20.1 km
UV index0.6
Day / nightDay
Today max / min23°C / 15°C
Today feels-like max / min24°C / 15°C
Today precipitation sum0.8 mm
Today rain sum0.8 mm
Today snowfall sum0 cm
Today max precip probability58%
Today max wind / gusts20 km/h / 35 km/h
Dominant wind direction243° (WSW)
Sunrise / sunset5:06 AM / 8:46 PM
Daylight duration15h 40m
Sunshine duration10h 26m
Max UV index7.15
Reference evapotranspiration (ET₀)3.17 mm
Topsoil moisture (0–1 cm)0.458 m³/m³
Surface soil temperature16°C
US AQI33
European AQI20
PM2.55 µg/m³
PM105.1 µg/m³
Ozone (O₃)51 µg/m³
Nitrogen dioxide (NO₂)11.6 µg/m³
Sulphur dioxide (SO₂)2.8 µg/m³
Carbon monoxide (CO)155 µg/m³
Dust0 µg/m³

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Frequently asked questions

Will it rain in Sainte-Catherine tomorrow?

Rain is unlikely in Sainte-Catherine tomorrow; the precipitation chance stays around 16%.

What is the temperature in Sainte-Catherine today?

Today Sainte-Catherine sees thunderstorm with a high of 22 °C and a low of 15 °C.

How hot will it be in Sainte-Catherine tomorrow?

Tomorrow's high in Sainte-Catherine is forecast at 24 °C with moderate drizzle.

Is it windy in Sainte-Catherine today?

No, not especially; gusts only reach up to 35 km/h today.

What is the UV index in Sainte-Catherine today?

The UV index peaks at 7 today, which is high.

What time is sunrise and sunset in Sainte-Catherine today?

The sun rises at 05:06 and sets at 20:46 local time.

Is the air quality in Sainte-Catherine good today?

Air quality is good right now, with a US AQI reading of 33.