Whitehorse weather in September

In September, Whitehorse sees average daytime highs of 11°C and overnight lows near 2°C, with 49 mm of precipitation across 11.2 wet days and about 12.6 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 13°C in the first days to 8°C by the end. The sky is clear or mostly clear about 13% of the time in September, and the air most often feels dry.

Daylight stretches from about 14 hours at the start of September to 11 h 12 min by month's end. Set against the rest of the year, September is Whitehorse's 8th-clearest and 1st-windiest month. For the whole year in context, see Whitehorse's year-round climate.

Daytime high: 11°; 5th warmest
Overnight low: 2°; 9th coldest
Precipitation: 49 mm; 11.2 wet days
Daylight: 12 h 36 min; 6:38 AM – 7:11 PM
Cloud cover: 75%; 8th clearest
Wind: 8 km/h; 1st windiest
Solar energy: 2.6 kWh/m²
Travel score: 2.3; out of 10

Whitehorse is capital city of the territory of Yukon, Canada.

Air quality: Excellent; PM2.5 3 µg/m³ · 2018
Density: 68/km²; people per km²
Founded: 1898

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

← August Whitehorse year-round climate October →Best places to visit in September

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 13°C in the first days to 8°C by the end.

A typical September day in Whitehorse reaches about 11°C in the afternoon and slips back to 2°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 6°C and 15°C. Set against its neighbours, September runs about 6°C cooler than August and about 8°C warmer than October.

	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
Avg high (°C)	13	13	13	13	13	13	12	12	12	12	12	11	11	11	11	11	10	10	10	10	9	9	9	9	8	8	8	8	7	7
Avg low (°C)	4	4	4	4	4	4	3	3	3	3	3	3	3	2	2	2	2	2	2	1	1	1	1	1	1	0	0	0	0	0

	Avg high (°C)	Avg low (°C)
1	13	4
2	13	4
3	13	4
4	13	4
5	13	4
6	13	4
7	12	3
8	12	3
9	12	3
10	12	3
11	12	3
12	11	3
13	11	3
14	11	2
15	11	2
16	11	2
17	10	2
18	10	2
19	10	2
20	10	1
21	9	1
22	9	1
23	9	1
24	9	1
25	8	1
26	8	0
27	8	0
28	8	0
29	7	0
30	7	0

How September really feels in Whitehorse

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 16 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

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

Whitehorse weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-14° / -20°	25	7.3	8.7	6.2	0.0
Feb	-9° / -18°	16	5	6.7	8.5	0.0
Mar	-3° / -14°	15	4.7	6.5	11.3	0.0
Apr	5° / -5°	14	4.1	4	14.2	0.6
May	12° / 1°	25	6.9	1.8	16.9	3.5
Jun	17° / 6°	44	10.3	0.2	18.6	5.3
Jul	19° / 8°	53	11.1	0	17.9	5.7
Aug	17° / 7°	53	11.1	0.2	15.5	4.9
Sep	11° / 2°	49	11.2	2.4	12.6	2.3
Oct	2° / -4°	41	10.4	9.3	9.7	0.1
Nov	-8° / -13°	27	7.8	9.7	7	0.0
Dec	-12° / -18°	28	7.3	9.5	5.4	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 12% of September, with mostly cloudy or overcast conditions the remaining 75%.

	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
Clearer (%)	22	22	21	21	22	22	22	22	23	23	23	24	24	24	24	25	25	25	26	27	27	27	27	28	27	27	26	26	26	26
Cloudier (%)	78	78	79	79	78	78	78	78	77	77	77	76	76	76	76	75	75	75	74	73	73	73	73	72	73	73	74	74	74	74

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	21	79
4	21	79
5	22	78
6	22	78
7	22	78
8	22	78
9	23	77
10	23	77
11	23	77
12	24	76
13	24	76
14	24	76
15	24	76
16	25	75
17	25	75
18	25	75
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	28	72
25	27	73
26	27	73
27	26	74
28	26	74
29	26	74
30	26	74

Chance of precipitation in September

Any precipitationSnow

Whitehorse gets around 49 mm of rain and snow over 11.2 wet days in September. 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 43% on the wettest days, and about 2 days bring snow. The odds ease toward the end of the month.

	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
Rain chance (%)	43	42	42	42	42	41	41	40	40	40	39	39	38	38	37	37	36	36	35	35	35	34	34	34	34	34	34	34	34	34
Snow chance (%)	2	2	2	2	2	2	2	2	3	3	3	4	4	5	6	6	7	8	9	10	11	12	13	14	15	16	17	18	18	19

	Rain chance (%)	Snow chance (%)
1	43	2
2	42	2
3	42	2
4	42	2
5	42	2
6	41	2
7	41	2
8	40	2
9	40	3
10	40	3
11	39	3
12	39	4
13	38	4
14	38	5
15	37	6
16	37	6
17	36	7
18	36	8
19	35	9
20	35	10
21	35	11
22	34	12
23	34	13
24	34	14
25	34	15
26	34	16
27	34	17
28	34	18
29	34	18
30	34	19

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September 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
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

	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

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 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
Wind speed (km/h)	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8
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

	Wind speed (km/h)	Feels
1	8	calm
2	8	calm
3	8	calm
4	8	calm
5	8	calm
6	8	calm
7	8	calm
8	8	calm
9	8	calm
10	8	calm
11	8	calm
12	8	calm
13	8	calm
14	8	calm
15	8	calm
16	8	calm
17	8	calm
18	8	calm
19	8	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 14 hours at the start of September to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 168 minutes over September. Sunrise moves from 6:00 AM to 7:13 AM, and sunset from 7:59 PM to 6:26 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
Daylight (h)	14.0	13.9	13.8	13.7	13.6	13.5	13.4	13.3	13.2	13.1	13.0	12.9	12.8	12.7	12.6	12.6	12.5	12.4	12.3	12.2	12.1	12.0	11.9	11.8	11.7	11.6	11.5	11.4	11.3	11.2
Sunrise (AM)	6:00	6:03	6:05	6:08	6:10	6:13	6:15	6:18	6:20	6:23	6:25	6:28	6:30	6:33	6:35	6:38	6:40	6:43	6:46	6:48	6:51	6:53	6:56	6:58	7:01	7:03	7:06	7:08	7:11	7:13
Sunset (PM)	7:59	7:56	7:53	7:50	7:47	7:43	7:40	7:37	7:34	7:31	7:27	7:24	7:21	7:18	7:14	7:11	7:08	7:05	7:01	6:58	6:55	6:52	6:48	6:45	6:42	6:39	6:35	6:32	6:29	6:26

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	14.0	6:00	7:59
2	13.9	6:03	7:56
3	13.8	6:05	7:53
4	13.7	6:08	7:50
5	13.6	6:10	7:47
6	13.5	6:13	7:43
7	13.4	6:15	7:40
8	13.3	6:18	7:37
9	13.2	6:20	7:34
10	13.1	6:23	7:31
11	13.0	6:25	7:27
12	12.9	6:28	7:24
13	12.8	6:30	7:21
14	12.7	6:33	7:18
15	12.6	6:35	7:14
16	12.6	6:38	7:11
17	12.5	6:40	7:08
18	12.4	6:43	7:05
19	12.3	6:46	7:01
20	12.2	6:48	6:58
21	12.1	6:51	6:55
22	12.0	6:53	6:52
23	11.9	6:56	6:48
24	11.8	6:58	6:45
25	11.7	7:01	6:42
26	11.6	7:03	6:39
27	11.5	7:06	6:35
28	11.4	7:08	6:32
29	11.3	7:11	6:29
30	11.2	7:13	6:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.6 kWh/m².

For context, solar energy here swings from a low near 0.21 kWh/m² to a high of 6.06 kWh/m² in June across the year — September's 2.6 kWh/m² falls in the middle.

	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
Solar energy (kWh/m²)	3.2	3.2	3.1	3.1	3.0	3.0	3.0	2.9	2.9	2.9	2.8	2.8	2.7	2.7	2.6	2.6	2.6	2.5	2.5	2.4	2.4	2.3	2.3	2.2	2.2	2.1	2.1	2.0	2.0	2.0
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Dim

	Solar energy (kWh/m²)	Level
1	3.2	Moderate
2	3.2	Moderate
3	3.1	Moderate
4	3.1	Moderate
5	3.0	Moderate
6	3.0	Moderate
7	3.0	Moderate
8	2.9	Moderate
9	2.9	Moderate
10	2.9	Moderate
11	2.8	Moderate
12	2.8	Moderate
13	2.7	Moderate
14	2.7	Moderate
15	2.6	Moderate
16	2.6	Moderate
17	2.6	Moderate
18	2.5	Moderate
19	2.5	Moderate
20	2.4	Moderate
21	2.4	Moderate
22	2.3	Moderate
23	2.3	Moderate
24	2.2	Moderate
25	2.2	Moderate
26	2.1	Moderate
27	2.1	Moderate
28	2.0	Moderate
29	2.0	Moderate
30	2.0	Dim

Planning a trip in September

Is September a good time to visit Whitehorse?

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

2.3

Sightseeing

5th-best month of the year

0.0

Beach & pool

5th-best month of the year

September is a weaker month for outdoor sightseeing in Whitehorse.

What to pack for Whitehorse in September

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

In September, Whitehorse sees daytime highs around 11°C and nights near 2°C. Pack a warm layer. Worth having: rain gear. About 11 days see rain.

a warm layerrain gear

UV index in Whitehorse in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Whitehorse peaks around July 15 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	0	1	2	3	4	5	6	4	3	1	0	0
Level	Low	Low	Low	Moderate	Moderate	Moderate	High	Moderate	Moderate	Low	Low	Low

	UV index (midday)	Level
Jan	0	Low
Feb	1	Low
Mar	2	Low
Apr	3	Moderate
May	4	Moderate
Jun	5	Moderate
Jul	6	High
Aug	4	Moderate
Sep	3	Moderate
Oct	1	Low
Nov	0	Low
Dec	0	Low

Location & terrain

Where is Whitehorse?

Whitehorse sits at 60.7°N, 135.1°W, 707 m above sea level, in Canada. The nearest listed city is Juneau, 271 km away.

Topography around Whitehorse

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

Within 3 km, the terrain around Whitehorse has only modest variations in elevation — a maximum elevation change of 181 m around an average of 688 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,175 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,734 m.

The land around Whitehorse is covered by trees (62%) within 3 km, trees (80%) within 16 km, and trees (65%) within 80 km.

3 km

181 m

trees 62%

16 km

1,175 m

trees 80%

80 km

1,734 m

trees 65%

treesgrasslandartificial surfacesbare terrainwatermoss and lichen

← August Whitehorse year-round climate October →Best places to visit in September

September weather nearby: Juneau 271 km · Dawson City 435 km · Badger 779 km · Eagle River 783 km · Fairbanks 788 km · Terrace 788 km · Anchorage 801 km · Fort St. John 960 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 Whitehorse (60.7161°, -135.0538°, elevation 707 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).

	Avg high (°C)	Avg low (°C)
1	13	4
2	13	4
3	13	4
4	13	4
5	13	4
6	13	4
7	12	3
8	12	3
9	12	3
10	12	3
11	12	3
12	11	3
13	11	3
14	11	2
15	11	2
16	11	2
17	10	2
18	10	2
19	10	2
20	10	1
21	9	1
22	9	1
23	9	1
24	9	1
25	8	1
26	8	0
27	8	0
28	8	0
29	7	0
30	7	0

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	21	79
4	21	79
5	22	78
6	22	78
7	22	78
8	22	78
9	23	77
10	23	77
11	23	77
12	24	76
13	24	76
14	24	76
15	24	76
16	25	75
17	25	75
18	25	75
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	28	72
25	27	73
26	27	73
27	26	74
28	26	74
29	26	74
30	26	74

	Rain chance (%)	Snow chance (%)
1	43	2
2	42	2
3	42	2
4	42	2
5	42	2
6	41	2
7	41	2
8	40	2
9	40	3
10	40	3
11	39	3
12	39	4
13	38	4
14	38	5
15	37	6
16	37	6
17	36	7
18	36	8
19	35	9
20	35	10
21	35	11
22	34	12
23	34	13
24	34	14
25	34	15
26	34	16
27	34	17
28	34	18
29	34	18
30	34	19

	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

	Avg high (°C)	Avg low (°C)
1	13	4
2	13	4
3	13	4
4	13	4
5	13	4
6	13	4
7	12	3
8	12	3
9	12	3
10	12	3
11	12	3
12	11	3
13	11	3
14	11	2
15	11	2
16	11	2
17	10	2
18	10	2
19	10	2
20	10	1
21	9	1
22	9	1
23	9	1
24	9	1
25	8	1
26	8	0
27	8	0
28	8	0
29	7	0
30	7	0

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	21	79
4	21	79
5	22	78
6	22	78
7	22	78
8	22	78
9	23	77
10	23	77
11	23	77
12	24	76
13	24	76
14	24	76
15	24	76
16	25	75
17	25	75
18	25	75
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	28	72
25	27	73
26	27	73
27	26	74
28	26	74
29	26	74
30	26	74

	Rain chance (%)	Snow chance (%)
1	43	2
2	42	2
3	42	2
4	42	2
5	42	2
6	41	2
7	41	2
8	40	2
9	40	3
10	40	3
11	39	3
12	39	4
13	38	4
14	38	5
15	37	6
16	37	6
17	36	7
18	36	8
19	35	9
20	35	10
21	35	11
22	34	12
23	34	13
24	34	14
25	34	15
26	34	16
27	34	17
28	34	18
29	34	18
30	34	19

	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

	Avg high (°C)	Avg low (°C)
1	13	4
2	13	4
3	13	4
4	13	4
5	13	4
6	13	4
7	12	3
8	12	3
9	12	3
10	12	3
11	12	3
12	11	3
13	11	3
14	11	2
15	11	2
16	11	2
17	10	2
18	10	2
19	10	2
20	10	1
21	9	1
22	9	1
23	9	1
24	9	1
25	8	1
26	8	0
27	8	0
28	8	0
29	7	0
30	7	0

	Clearer (%)	Cloudier (%)
1	22	78
2	22	78
3	21	79
4	21	79
5	22	78
6	22	78
7	22	78
8	22	78
9	23	77
10	23	77
11	23	77
12	24	76
13	24	76
14	24	76
15	24	76
16	25	75
17	25	75
18	25	75
19	26	74
20	27	73
21	27	73
22	27	73
23	27	73
24	28	72
25	27	73
26	27	73
27	26	74
28	26	74
29	26	74
30	26	74

	Rain chance (%)	Snow chance (%)
1	43	2
2	42	2
3	42	2
4	42	2
5	42	2
6	41	2
7	41	2
8	40	2
9	40	3
10	40	3
11	39	3
12	39	4
13	38	4
14	38	5
15	37	6
16	37	6
17	36	7
18	36	8
19	35	9
20	35	10
21	35	11
22	34	12
23	34	13
24	34	14
25	34	15
26	34	16
27	34	17
28	34	18
29	34	18
30	34	19

	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