Sainte-Thérèse in Fall
In fall (September, October and November), Sainte-Thérèse sees average daytime highs around 12°C and overnight lows near 4°C, with 289 mm of precipitation over about 33 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 23°C in early September to 2°C by late November. The sky is clear or mostly clear about 24% of the time across fall, and the air most often feels dry.
Fall is Sainte-Thérèse's 2nd-best season to visit on our travel score. For the whole year in context, see Sainte-Thérèse's year-round climate.
- Avg daytime high
- 12°C
- 2nd-warmest season
- Avg overnight low
- 4°C
- Precipitation
- 289 mm
- 33 wet days
- Avg wind
- 12 km/h
- Travel score
- 3.3
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Sainte-Thérèse in Fall
Over the season highs ease from about 23°C in early September to 2°C by late November.
A typical fall day in Sainte-Thérèse reaches about 12°C and drops to 4°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Sainte-Thérèse
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 41 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Sainte-Thérèse weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -6° / -15° | 76 | 10.2 | 9.6 | 8.9 | 0.0 |
| Feb | -4° / -13° | 62 | 8.7 | 8.1 | 10.1 | 0.0 |
| Mar | 2° / -7° | 74 | 10.4 | 7 | 11.6 | 0.0 |
| Apr | 11° / 1° | 103 | 11.3 | 3.2 | 13.3 | 2.5 |
| May | 18° / 8° | 95 | 11.5 | 0.2 | 14.7 | 5.6 |
| Jun | 24° / 13° | 101 | 11.7 | 0 | 15.4 | 6.4 |
| Jul | 26° / 16° | 95 | 12.3 | 0 | 15.1 | 6.3 |
| Aug | 25° / 15° | 96 | 11.6 | 0 | 13.9 | 6.7 |
| Sep | 20° / 10° | 94 | 10 | 0 | 12.3 | 6.3 |
| Oct | 13° / 4° | 107 | 11.4 | 0.9 | 10.7 | 3.2 |
| Nov | 5° / -2° | 87 | 11.1 | 4.2 | 9.3 | 0.4 |
| Dec | -2° / -10° | 86 | 11.6 | 9.5 | 8.6 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 24% of the time across fall.
Chance of precipitation in Fall
Sainte-Thérèse gets around 289 mm of rain and snow over 33 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 12 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 06 min in early September to 8 h 48 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 2.6 kWh/m².
Is fall a good time to visit Sainte-Thérèse?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Sainte-Thérèse.
What to pack for Sainte-Thérèse in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Sainte-Thérèse sees daytime highs around 12°C and nights near 4°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 33 days see rain.
UV index in Sainte-Thérèse in Fall
Clear-sky midday UV across fall averages around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sainte-Thérèse peaks around July 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 10 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 4 | 6 | 6 | 8 | 4 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | Very high | Moderate | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 4 | Moderate |
| May | 6 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 4 | Moderate |
| Sep | 5 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Sainte-Thérèse?
Sainte-Thérèse sits at 45.6°N, 73.8°W, 36 m above sea level, in Canada. The nearest listed city is Boisbriand, 3.0 km away.
Topography around Sainte-Thérèse
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sainte-Thérèse.
Within 3 km, the terrain around Sainte-Thérèse has only modest variations in elevation — a maximum elevation change of 68 m around an average of 45 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 133 m; within 80 km, large variations in elevation — a maximum elevation change of 924 m.
The land around Sainte-Thérèse is covered by trees (46%) and artificial surfaces (41%) within 3 km, trees (36%), artificial surfaces (25%) and cropland (23%) within 16 km, and trees (48%) and cropland (36%) within 80 km.
Canada travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 83% of US
- price level, 2025
- GDP per capita
- $55,698
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 2
- per 100k, 2023
- Road deaths
- 5.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sainte-Thérèse (45.6392°, -73.8276°, elevation 36 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.