Granby weather in December

In December, Granby sees average daytime highs of -1°C and overnight lows near -9°C, with 90 mm of precipitation across 13 wet days and about 8.6 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 -3°C by the end. The sky is clear or mostly clear about 15% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of December to 8 h 36 min by month's end. Set against the rest of the year, December is Granby's 12th-clearest and 7th-windiest month. For the whole year in context, see Granby's year-round climate.

Daytime high
-1°
10th warmest
Overnight low
-9°
3rd coldest
Precipitation
90 mm
13 wet days
Daylight
8 h 30 min
7:31 AM – 4:03 PM
Cloud cover
74%
12th clearest
Wind
12 km/h
7th windiest
Solar energy
1.2 kWh/m²
Travel score
0.0
out of 10

Granby is city in Estrie, Quebec, Canada.

Density
424/km²
people per km²
Founded
1859

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 1°C in the first days to -3°C by the end.

A typical December day in Granby reaches about -1°C in the afternoon and slips back to -9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -9°C and 6°C. Set against its neighbours, December runs about 7°C cooler than November and about 4°C warmer than January.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
12-5
22-6
31-6
41-6
51-7
61-7
70-7
80-7
90-8
100-8
11-1-8
12-1-8
13-1-9
14-1-9
15-1-9
16-2-9
17-2-9
18-2-9
19-2-10
20-2-10
21-2-10
22-2-10
23-2-10
24-2-10
25-3-10
26-3-10
27-3-11
28-3-11
29-3-11
30-3-11
31-3-11

How December really feels in Granby

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.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
31 feel bitter (≤ -10°C)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Granby 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-5° / -13°7812.111.18.90.0
Feb-3° / -13°6410.19.410.10.0
Mar / -7°7811.47.711.60.1
Apr11° / 9912.3313.22.4
May18° / 10812.90.214.75.3
Jun23° / 13°11813.5015.46.2
Jul25° / 15°10813.7015.16.2
Aug24° / 14°11112.7013.96.6
Sep20° / 10°9810.9012.36.1
Oct13° / 11412.60.710.73.2
Nov / -2°9012.64.99.30.4
Dec-1° / -9°901310.38.60.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22674
32575
42674
52674
62674
72674
82674
92674
102773
112773
122872
132872
142872
152872
162971
172773
182773
192872
202872
212872
222872
232872
242872
252872
262872
272773
282674
292674
302674
312674

Chance of precipitation in December

Any precipitationSnow

Granby gets around 90 mm of rain and snow over 13 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 43% and peaks near 45% on the wettest days, and about 10 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14528
24528
34529
44529
54429
64330
74330
84231
94231
104132
114132
124133
134133
144134
154134
164134
174134
184135
194135
204235
214235
224235
234236
244236
254336
264336
274336
284336
294436
304437
314437

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

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.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 48 min at the start of December to 8 h 36 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 7:17 AM to 7:37 AM, and sunset from 4:04 PM to 4:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:174:04
28.87:184:04
38.77:194:04
48.77:204:03
58.77:214:03
68.77:224:03
78.77:234:03
88.67:244:03
98.67:254:03
108.67:264:03
118.67:274:03
128.67:284:03
138.67:294:03
148.67:294:03
158.67:304:03
168.57:314:03
178.57:314:04
188.57:324:04
198.57:334:04
208.57:334:05
218.57:344:05
228.57:344:06
238.57:354:06
248.57:354:07
258.57:354:07
268.57:364:08
278.57:364:08
288.57:364:09
298.67:374:10
308.67:374:10
318.67:374:11

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.2 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.2 kWh/m² to a high of 5.88 kWh/m² in June across the year — December's 1.2 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.3Dim
21.2Dim
31.2Dim
41.2Dim
51.2Dim
61.2Dim
71.2Dim
81.2Dim
91.2Dim
101.2Dim
111.2Dim
121.2Dim
131.2Dim
141.2Dim
151.2Dim
161.2Dim
171.2Dim
181.2Dim
191.2Dim
201.2Dim
211.2Dim
221.2Dim
231.2Dim
241.2Dim
251.2Dim
261.2Dim
271.2Dim
281.2Dim
291.3Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Granby?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Granby.

What to pack for Granby in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Granby sees daytime highs around -1°C and nights near -9°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 13 days see rain.

a warm layera heavy coatrain gear

UV index in Granby in December

LowModerateHighVery highExtreme

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 Granby 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 December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 13UV 7Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul8Very high
Aug3Moderate
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Granby?

Granby sits at 45.4°N, 72.7°W, 102 m above sea level, in Canada. The nearest listed city is Saint-Hyacinthe, 31 km away.

Topography around Granby

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Granby.

Within 3 km, the terrain around Granby has only modest variations in elevation — a maximum elevation change of 97 m around an average of 120 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 511 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,288 m.

The land around Granby is covered by trees (41%) and artificial surfaces (40%) within 3 km, trees (54%) and cropland (30%) within 16 km, and trees (51%) and cropland (33%) within 80 km.

3 km
97 m
16 km
511 m
80 km
1,288 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Saint-Hyacinthe 31 km · Mont-Saint-Hilaire 40 km · Beloeil 41 km · Saint-Jean-sur-Richelieu 43 km · Chambly 43 km · Saint-Basile-le-Grand 45 km · Magog 48 km · Saint-Bruno-de-Montarville 50 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
Christian 53%none 35%Muslim 5%Hindu 2%

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 Granby (45.4001°, -72.7324°, elevation 102 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).