Lethbridge weather in December

In December, Lethbridge sees average daytime highs of -0°C and overnight lows near -9°C, with 16 mm of precipitation across 4.4 wet days and about 8 hours of daylight. It is the 11th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 1°C in the first days to -2°C by the end. The sky is clear or mostly clear about 30% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 12 min at the start of December to 8 hours by month's end. Set against the rest of the year, December is Lethbridge's 5th-clearest and 2nd-windiest month. For the whole year in context, see Lethbridge's year-round climate.

Daytime high
-0°
11th warmest
Overnight low
-9°
3rd coldest
Precipitation
16 mm
4.4 wet days
Daylight
7 h 54 min
8:30 AM – 4:25 PM
Cloud cover
58%
5th clearest
Wind
14 km/h
2nd windiest
Solar energy
1.16 kWh/m²
Travel score
0.0
out of 10

Lethbridge is city in Alberta, Canada.

Air quality
Excellent
PM2.5 5 µg/m³ · 2019
Density
843/km²
people per km²
Founded
1874

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 -2°C by the end.

A typical December day in Lethbridge reaches about -0°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 -12°C and 8°C. Set against its neighbours, December runs about 5°C cooler than November and on par with January.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
12-7
21-7
31-7
41-7
51-7
61-8
71-8
81-8
91-8
101-8
110-8
120-8
130-8
140-8
150-8
160-8
170-8
180-8
190-8
200-9
21-1-9
22-1-9
23-1-9
24-1-9
25-1-10
26-1-10
27-2-10
28-2-10
29-2-10
30-2-10
31-2-11

How December really feels in Lethbridge

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.

Lethbridge weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -10°144.44.98.40.0
Feb / -9°133.94.59.80.0
Mar / -5°2265.411.50.6
Apr12° / 407.93.413.43.3
May18° / 599.1115.15.7
Jun21° / 10°92110166.3
Jul26° / 12°356.8015.77.5
Aug25° / 11°355.80.114.27.7
Sep20° / 375.80.412.47.0
Oct12° / 285.82.210.53.8
Nov / -4°225.34.88.80.3
Dec-0° / -9°164.44.780.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 18% of December, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
25050
35050
45050
55149
65149
75149
85149
95149
105149
115050
125050
135050
144852
154852
164852
174951
184753
194753
204852
214753
224753
234753
244654
254654
264654
274654
284555
294555
304555
314555

Chance of precipitation in December

Any precipitationSnow

Lethbridge gets around 16 mm of rain and snow over 4.4 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 14% and peaks near 17% on the wettest days, and about 5 days bring snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
11514
21514
31414
41413
51413
61312
71312
81312
91312
101312
111312
121313
131313
141313
151314
161314
171414
181415
191415
201416
211517
221517
231518
241618
251619
261619
271619
281719
291719
301719
311719

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 14 km/h in December.

Across December, daily wind ranges from about 13 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 12 min at the start of December to 8 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 8:14 AM to 8:36 AM, and sunset from 4:28 PM to 4:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.28:144:28
28.28:164:27
38.28:174:27
48.18:184:26
58.18:194:26
68.18:204:26
78.18:214:25
88.08:224:25
98.08:234:25
108.08:244:25
118.08:254:25
128.08:264:25
138.08:274:25
147.98:284:25
157.98:294:25
167.98:304:25
177.98:304:25
187.98:314:26
197.98:324:26
207.98:324:26
217.98:334:27
227.98:334:27
237.98:344:28
247.98:344:28
257.98:344:29
267.98:354:29
277.98:354:30
287.98:354:31
297.98:354:32
307.98:364:32
318.08:364:33

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.16 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.16 kWh/m² to a high of 7 kWh/m² in July across the year — December's 1.16 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.3Dim
21.3Dim
31.3Dim
41.2Dim
51.2Dim
61.2Dim
71.2Dim
81.2Dim
91.2Dim
101.2Dim
111.1Dim
121.1Dim
131.1Dim
141.1Dim
151.1Dim
161.1Dim
171.1Dim
181.1Dim
191.1Dim
201.1Dim
211.1Dim
221.1Dim
231.1Dim
241.1Dim
251.1Dim
261.1Dim
271.2Dim
281.2Dim
291.2Dim
301.2Dim
311.2Dim
Planning a trip in December

Is December a good time to visit Lethbridge?

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 Lethbridge.

What to pack for Lethbridge in December

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

In December, Lethbridge sees daytime highs around -0°C and nights near -9°C. Pack a warm layer and a heavy coat. About 4 days see rain.

a warm layera heavy coat

UV index in Lethbridge 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 Lethbridge peaks around July 15 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 18 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowJul 15UV 8Dec 18UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun6High
Jul8Very high
Aug5Moderate
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Lethbridge?

Lethbridge sits at 49.7°N, 112.8°W, 907 m above sea level, in Canada. The nearest listed city is Okotoks, 141 km away.

Topography around Lethbridge

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

Within 3 km, the terrain around Lethbridge has only modest variations in elevation — a maximum elevation change of 106 m around an average of 904 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 178 m; within 80 km, large variations in elevation — a maximum elevation change of 1,058 m.

The land around Lethbridge is covered by artificial surfaces (54%) and grassland (29%) within 3 km, cropland (55%) and grassland (34%) within 16 km, and cropland (58%) and grassland (39%) within 80 km.

3 km
106 m
16 km
178 m
80 km
1,058 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Okotoks 141 km · Auburn Bay 155 km · Cranston 156 km · McKenzie Towne 158 km · Medicine Hat 158 km · Evergreen 164 km · Chestermere 164 km · Beltline 173 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 Lethbridge (49.7°, -112.8186°, elevation 907 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).