Sorel-Tracy weather in December
In December, Sorel-Tracy sees average daytime highs of -2°C and overnight lows near -10°C, with 86 mm of precipitation across 11.3 wet days and about 8.5 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.
Highs ease over the month, from about 1°C in the first days to -4°C by the end. The sky is clear or mostly clear about 20% of the time in December, and the air most often feels dry.
Daylight stretches from about 8 h 42 min at the start of December to 8 h 30 min by month's end. Set against the rest of the year, December is Sorel-Tracy's 12th-clearest and 8th-windiest month. For the whole year in context, see Sorel-Tracy's year-round climate.
- Daytime high
- -2°
- 10th warmest
- Overnight low
- -10°
- 3rd coldest
- Precipitation
- 86 mm
- 11.3 wet days
- Daylight
- 8 h 30 min
- 7:35 AM – 4:02 PM
- Cloud cover
- 70%
- 12th clearest
- Wind
- 12 km/h
- 8th windiest
- Solar energy
- 1.25 kWh/m²
- Travel score
- 0.0
- out of 10
Temperature in December
Highs ease over the month, from about 1°C in the first days to -4°C by the end.
A typical December day in Sorel-Tracy reaches about -2°C in the afternoon and slips back to -10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -10°C and 5°C. Set against its neighbours, December runs about 7°C cooler than November and about 4°C warmer than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 1 | 1 | 1 | 0 | 0 | 0 | 0 | -1 | -1 | -1 | -1 | -2 | -2 | -2 | -2 | -2 | -2 | -3 | -3 | -3 | -3 | -3 | -3 | -3 | -3 | -4 | -4 | -4 | -4 | -4 | -4 |
| Avg low (°C) | -6 | -6 | -6 | -7 | -7 | -7 | -8 | -8 | -8 | -9 | -9 | -9 | -9 | -9 | -10 | -10 | -10 | -10 | -10 | -10 | -11 | -11 | -11 | -11 | -11 | -11 | -12 | -12 | -12 | -12 | -12 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 1 | -6 |
| 2 | 1 | -6 |
| 3 | 1 | -6 |
| 4 | 0 | -7 |
| 5 | 0 | -7 |
| 6 | 0 | -7 |
| 7 | 0 | -8 |
| 8 | -1 | -8 |
| 9 | -1 | -8 |
| 10 | -1 | -9 |
| 11 | -1 | -9 |
| 12 | -2 | -9 |
| 13 | -2 | -9 |
| 14 | -2 | -9 |
| 15 | -2 | -10 |
| 16 | -2 | -10 |
| 17 | -2 | -10 |
| 18 | -3 | -10 |
| 19 | -3 | -10 |
| 20 | -3 | -10 |
| 21 | -3 | -11 |
| 22 | -3 | -11 |
| 23 | -3 | -11 |
| 24 | -3 | -11 |
| 25 | -3 | -11 |
| 26 | -4 | -11 |
| 27 | -4 | -12 |
| 28 | -4 | -12 |
| 29 | -4 | -12 |
| 30 | -4 | -12 |
| 31 | -4 | -12 |
How December really feels in Sorel-Tracy
Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in December is cold — wind chill drags the overnight "feels like" below the raw low.
Sorel-Tracy weather by month
How December compares with the rest of the year at a glance. December is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -6° / -15° | 75 | 10.4 | 9.6 | 8.9 | 0.0 |
| Feb | -4° / -14° | 60 | 8.4 | 7.9 | 10 | 0.0 |
| Mar | 2° / -7° | 73 | 10 | 6.4 | 11.6 | 0.0 |
| Apr | 11° / 1° | 99 | 11.3 | 2.6 | 13.3 | 2.4 |
| May | 19° / 8° | 93 | 12 | 0.1 | 14.7 | 5.6 |
| Jun | 24° / 14° | 101 | 11.8 | 0 | 15.5 | 6.4 |
| Jul | 26° / 16° | 98 | 12.8 | 0 | 15.2 | 6.2 |
| Aug | 25° / 15° | 99 | 11.4 | 0 | 14 | 6.7 |
| Sep | 20° / 11° | 93 | 10.2 | 0 | 12.3 | 6.2 |
| Oct | 13° / 4° | 107 | 11.1 | 0.7 | 10.7 | 3.3 |
| Nov | 5° / -2° | 86 | 11 | 3.7 | 9.2 | 0.4 |
| Dec | -2° / -10° | 86 | 11.3 | 9.2 | 8.5 | 0.0 |
Cloud cover in December
The sky is clear or mostly clear about 20% of the time in December, the cloudiest month of the year.
Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 69%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 29 | 29 | 29 | 29 | 31 | 30 | 31 | 30 | 31 | 32 | 32 | 31 | 32 | 32 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 33 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Cloudier (%) | 71 | 71 | 71 | 71 | 69 | 70 | 69 | 70 | 69 | 68 | 68 | 69 | 68 | 68 | 67 | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 68 | 67 | 68 | 68 | 68 | 68 | 68 | 68 | 68 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 29 | 71 |
| 2 | 29 | 71 |
| 3 | 29 | 71 |
| 4 | 29 | 71 |
| 5 | 31 | 69 |
| 6 | 30 | 70 |
| 7 | 31 | 69 |
| 8 | 30 | 70 |
| 9 | 31 | 69 |
| 10 | 32 | 68 |
| 11 | 32 | 68 |
| 12 | 31 | 69 |
| 13 | 32 | 68 |
| 14 | 32 | 68 |
| 15 | 33 | 67 |
| 16 | 32 | 68 |
| 17 | 32 | 68 |
| 18 | 32 | 68 |
| 19 | 32 | 68 |
| 20 | 32 | 68 |
| 21 | 32 | 68 |
| 22 | 32 | 68 |
| 23 | 32 | 68 |
| 24 | 33 | 67 |
| 25 | 32 | 68 |
| 26 | 32 | 68 |
| 27 | 32 | 68 |
| 28 | 32 | 68 |
| 29 | 32 | 68 |
| 30 | 32 | 68 |
| 31 | 32 | 68 |
Chance of precipitation in December
Sorel-Tracy gets around 86 mm of rain and snow over 11.3 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 37% and peaks near 38% on the wettest days, and about 9 days bring snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 38 | 38 | 38 | 37 | 37 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 38 | 38 | 38 | 38 | 38 | 38 | 38 | 38 |
| Snow chance (%) | 24 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 30 | 30 | 30 | 31 | 31 | 31 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 34 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 38 | 24 |
| 2 | 38 | 25 |
| 3 | 38 | 25 |
| 4 | 37 | 25 |
| 5 | 37 | 26 |
| 6 | 36 | 26 |
| 7 | 36 | 26 |
| 8 | 35 | 26 |
| 9 | 35 | 27 |
| 10 | 35 | 27 |
| 11 | 35 | 28 |
| 12 | 35 | 28 |
| 13 | 35 | 29 |
| 14 | 35 | 29 |
| 15 | 35 | 29 |
| 16 | 35 | 30 |
| 17 | 36 | 30 |
| 18 | 36 | 30 |
| 19 | 36 | 31 |
| 20 | 37 | 31 |
| 21 | 37 | 31 |
| 22 | 37 | 32 |
| 23 | 37 | 32 |
| 24 | 38 | 33 |
| 25 | 38 | 33 |
| 26 | 38 | 33 |
| 27 | 38 | 33 |
| 28 | 38 | 33 |
| 29 | 38 | 34 |
| 30 | 38 | 34 |
| 31 | 38 | 34 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in December
Winds average 12 km/h in December.
Across December, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 12 | calm |
| 2 | 12 | calm |
| 3 | 12 | calm |
| 4 | 12 | calm |
| 5 | 12 | calm |
| 6 | 12 | calm |
| 7 | 12 | calm |
| 8 | 12 | calm |
| 9 | 12 | calm |
| 10 | 12 | calm |
| 11 | 12 | calm |
| 12 | 12 | calm |
| 13 | 12 | calm |
| 14 | 12 | calm |
| 15 | 12 | calm |
| 16 | 12 | calm |
| 17 | 12 | calm |
| 18 | 12 | calm |
| 19 | 12 | calm |
| 20 | 12 | calm |
| 21 | 12 | calm |
| 22 | 12 | calm |
| 23 | 12 | calm |
| 24 | 12 | calm |
| 25 | 12 | calm |
| 26 | 12 | calm |
| 27 | 12 | calm |
| 28 | 12 | calm |
| 29 | 12 | calm |
| 30 | 12 | calm |
| 31 | 12 | calm |
Sunrise & sunset in December
Daylight runs from about 8 h 42 min at the start of December to 8 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 12 minutes over December. Sunrise moves from 7:21 AM to 7:41 AM, and sunset from 4:04 PM to 4:10 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 8.7 | 8.7 | 8.7 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 |
| Sunrise (AM) | 7:21 | 7:22 | 7:23 | 7:24 | 7:25 | 7:26 | 7:27 | 7:28 | 7:29 | 7:30 | 7:31 | 7:32 | 7:33 | 7:33 | 7:34 | 7:35 | 7:35 | 7:36 | 7:37 | 7:37 | 7:38 | 7:38 | 7:39 | 7:39 | 7:40 | 7:40 | 7:40 | 7:40 | 7:41 | 7:41 | 7:41 |
| Sunset (PM) | 4:04 | 4:03 | 4:03 | 4:03 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:02 | 4:03 | 4:03 | 4:03 | 4:04 | 4:04 | 4:05 | 4:05 | 4:06 | 4:06 | 4:07 | 4:07 | 4:08 | 4:09 | 4:09 | 4:10 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 8.7 | 7:21 | 4:04 |
| 2 | 8.7 | 7:22 | 4:03 |
| 3 | 8.7 | 7:23 | 4:03 |
| 4 | 8.6 | 7:24 | 4:03 |
| 5 | 8.6 | 7:25 | 4:02 |
| 6 | 8.6 | 7:26 | 4:02 |
| 7 | 8.6 | 7:27 | 4:02 |
| 8 | 8.6 | 7:28 | 4:02 |
| 9 | 8.5 | 7:29 | 4:02 |
| 10 | 8.5 | 7:30 | 4:02 |
| 11 | 8.5 | 7:31 | 4:02 |
| 12 | 8.5 | 7:32 | 4:02 |
| 13 | 8.5 | 7:33 | 4:02 |
| 14 | 8.5 | 7:33 | 4:02 |
| 15 | 8.5 | 7:34 | 4:02 |
| 16 | 8.5 | 7:35 | 4:02 |
| 17 | 8.5 | 7:35 | 4:03 |
| 18 | 8.4 | 7:36 | 4:03 |
| 19 | 8.4 | 7:37 | 4:03 |
| 20 | 8.4 | 7:37 | 4:04 |
| 21 | 8.4 | 7:38 | 4:04 |
| 22 | 8.4 | 7:38 | 4:05 |
| 23 | 8.4 | 7:39 | 4:05 |
| 24 | 8.4 | 7:39 | 4:06 |
| 25 | 8.4 | 7:40 | 4:06 |
| 26 | 8.4 | 7:40 | 4:07 |
| 27 | 8.5 | 7:40 | 4:07 |
| 28 | 8.5 | 7:40 | 4:08 |
| 29 | 8.5 | 7:41 | 4:09 |
| 30 | 8.5 | 7:41 | 4:09 |
| 31 | 8.5 | 7:41 | 4:10 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 1.25 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 1.25 kWh/m² to a high of 5.91 kWh/m² in June across the year — December's 1.25 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.3 | Dim |
| 2 | 1.3 | Dim |
| 3 | 1.3 | Dim |
| 4 | 1.3 | Dim |
| 5 | 1.3 | Dim |
| 6 | 1.3 | Dim |
| 7 | 1.3 | Dim |
| 8 | 1.3 | Dim |
| 9 | 1.3 | Dim |
| 10 | 1.3 | Dim |
| 11 | 1.3 | Dim |
| 12 | 1.3 | Dim |
| 13 | 1.3 | Dim |
| 14 | 1.3 | Dim |
| 15 | 1.3 | Dim |
| 16 | 1.3 | Dim |
| 17 | 1.3 | Dim |
| 18 | 1.3 | Dim |
| 19 | 1.3 | Dim |
| 20 | 1.3 | Dim |
| 21 | 1.3 | Dim |
| 22 | 1.3 | Dim |
| 23 | 1.3 | Dim |
| 24 | 1.3 | Dim |
| 25 | 1.3 | Dim |
| 26 | 1.3 | Dim |
| 27 | 1.3 | Dim |
| 28 | 1.3 | Dim |
| 29 | 1.3 | Dim |
| 30 | 1.3 | Dim |
| 31 | 1.3 | Dim |
Is December a good time to visit Sorel-Tracy?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Sorel-Tracy.
What to pack for Sorel-Tracy in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Sorel-Tracy sees daytime highs around -2°C and nights near -10°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.
UV index in Sorel-Tracy in December
Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sorel-Tracy peaks around July 13 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 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 | 3 | 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 | 3 | 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 Sorel-Tracy?
Sorel-Tracy sits at 46.0°N, 73.1°W, 13 m above sea level, in Canada. The nearest listed city is Joliette, 24 km away.
Topography around Sorel-Tracy
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sorel-Tracy.
Within 3 km, the terrain around Sorel-Tracy has only modest variations in elevation — a maximum elevation change of 37 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 71 m; within 80 km, large variations in elevation — a maximum elevation change of 749 m.
The land around Sorel-Tracy is covered by water (32%), artificial surfaces (27%) and trees (23%) within 3 km, cropland (44%) and trees (29%) within 16 km, and trees (53%) and cropland (32%) 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 Sorel-Tracy (46.0418°, -73.1136°, elevation 13 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).