Mount Vernon weather in February

In February, Mount Vernon sees average daytime highs of 45°F and overnight lows near 30°F, with 2.9 in of precipitation across 8.4 wet days and about 10.5 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 42°F in the first days to 49°F by the end. The sky is clear or mostly clear about 26% of the time in February, and the air most often feels dry.

Daylight stretches from about 10 hours at the start of February to 11 hours by month's end. Set against the rest of the year, February is Mount Vernon's 12th-clearest and 3rd-windiest month. For the whole year in context, see Mount Vernon's year-round climate.

Daytime high: 45°; 10th warmest
Overnight low: 30°; 2nd coldest
Precipitation: 2.9 in; 8.4 wet days
Daylight: 10 h 30 min; 6:55 AM – 5:26 PM
Cloud cover: 66%; 12th clearest
Wind: 8 mph; 3rd windiest
Solar energy: 3.06 kWh/m²
Travel score: 1.1; out of 10

Mount Vernon is city located near the center of Jefferson County, Illinois, United States.

Density: 396/km²; people per km²
Founded: 1817

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

← January Mount Vernon year-round climate March →Best places to visit in February

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

Temperature in February

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 42°F in the first days to 49°F by the end.

A typical February day in Mount Vernon reaches about 45°F in the afternoon and slips back to 30°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 30°F and 62°F. Set against its neighbours, February runs about 5°F warmer than January and about 11°F cooler than March.

	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
Avg high (°F)	42	42	42	42	43	43	43	43	44	44	44	44	45	45	45	46	46	46	47	47	47	48	48	48	49	49	49	50
Avg low (°F)	27	27	27	28	28	28	28	28	28	28	29	29	29	29	30	30	30	30	31	31	31	31	32	32	32	33	33	33

	Avg high (°F)	Avg low (°F)
1	42	27
2	42	27
3	42	27
4	42	28
5	43	28
6	43	28
7	43	28
8	43	28
9	44	28
10	44	28
11	44	29
12	44	29
13	45	29
14	45	29
15	45	30
16	46	30
17	46	30
18	46	30
19	47	31
20	47	31
21	47	31
22	48	31
23	48	32
24	48	32
25	49	32
26	49	33
27	49	33
28	50	33

How February really feels in Mount Vernon

Once humidity and wind are folded in, February averages 0 days that feel above 90°F and 28 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

wind chill below the day's low

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

Mount Vernon weather by month

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

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	41° / 26°	3.3	9	2.6	9.6	0.0
Feb	45° / 30°	2.9	8.4	2.7	10.5	1.1
Mar	56° / 38°	4.1	10.8	1.2	11.7	3.7
Apr	67° / 49°	5.2	11.3	0.1	13	5.9
May	76° / 59°	5.1	12.9	0	14	6.3
Jun	85° / 68°	3.9	10.4	0	14.6	5.2
Jul	88° / 71°	3.4	10.3	0	14.4	4.5
Aug	86° / 69°	2.8	8.4	0	13.5	5.2
Sep	80° / 61°	3.0	7.3	0	12.3	7.0
Oct	68° / 49°	3.6	7.9	0	11	6.8
Nov	55° / 39°	3.8	8.8	0.6	9.9	3.6
Dec	44° / 31°	3.2	8.6	2	9.4	0.9

Cloud cover in February

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in February, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of February, with mostly cloudy or overcast conditions the remaining 63%.

	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
Clearer (%)	42	42	42	40	40	39	39	38	37	36	36	35	35	35	35	34	35	36	36	36	35	36	36	38	38	38	40	39
Cloudier (%)	58	58	58	60	60	61	61	62	63	64	64	65	65	65	65	66	65	64	64	64	65	64	64	62	62	62	60	61

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	40	60
5	40	60
6	39	61
7	39	61
8	38	62
9	37	63
10	36	64
11	36	64
12	35	65
13	35	65
14	35	65
15	35	65
16	34	66
17	35	65
18	36	64
19	36	64
20	36	64
21	35	65
22	36	64
23	36	64
24	38	62
25	38	62
26	38	62
27	40	60
28	39	61

Chance of precipitation in February

Any precipitationSnow

Mount Vernon gets around 2.9 in of rain and snow over 8.4 wet days in February. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 30% and peaks near 32% on the wettest days, and about 3 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
Rain chance (%)	27	27	27	27	28	28	28	29	29	30	30	30	31	31	31	31	31	31	32	32	32	32	32	32	32	31	31	31
Snow chance (%)	9	10	10	10	10	10	10	11	11	11	11	11	11	10	10	10	10	10	10	9	9	9	9	9	8	8	8	8

	Rain chance (%)	Snow chance (%)
1	27	9
2	27	10
3	27	10
4	27	10
5	28	10
6	28	10
7	28	10
8	29	11
9	29	11
10	30	11
11	30	11
12	30	11
13	31	11
14	31	10
15	31	10
16	31	10
17	31	10
18	31	10
19	32	10
20	32	9
21	32	9
22	32	9
23	32	9
24	32	9
25	32	8
26	31	8
27	31	8
28	31	8

Humidity in February

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, February lands in the dry band about 99% 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
Dry (%)	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99
Comfortable (%)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1

Wind in February

Winds average 8 mph in February.

Across February, daily wind ranges from about 8 mph on the calmest days to 8 mph 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
Wind speed (mph)	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	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (mph)	Feels
1	8	light breeze
2	8	light breeze
3	8	light breeze
4	8	light breeze
5	8	light breeze
6	8	light breeze
7	8	light breeze
8	8	light breeze
9	8	light breeze
10	8	light breeze
11	8	light breeze
12	8	light breeze
13	8	light breeze
14	8	light breeze
15	8	light breeze
16	8	light breeze
17	8	light breeze
18	8	light breeze
19	8	light breeze
20	8	light breeze
21	8	light breeze
22	8	light breeze
23	8	light breeze
24	8	light breeze
25	8	light breeze
26	8	light breeze
27	8	light breeze
28	8	light breeze

Sunrise & sunset in February

DaylightNight

Daylight runs from about 10 hours at the start of February to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over February. Sunrise moves from 7:08 AM to 6:38 AM, and sunset from 5:10 PM to 5:40 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
Daylight (h)	10.0	10.1	10.1	10.1	10.2	10.2	10.2	10.3	10.3	10.3	10.4	10.4	10.4	10.5	10.5	10.6	10.6	10.6	10.7	10.7	10.7	10.8	10.8	10.9	10.9	10.9	11.0	11.0
Sunrise (AM)	7:08	7:07	7:06	7:06	7:05	7:04	7:03	7:02	7:01	7:00	6:59	6:58	6:57	6:56	6:55	6:53	6:52	6:51	6:50	6:49	6:47	6:46	6:45	6:44	6:42	6:41	6:40	6:38
Sunset (PM)	5:10	5:11	5:12	5:14	5:15	5:16	5:17	5:18	5:19	5:20	5:21	5:22	5:24	5:25	5:26	5:27	5:28	5:29	5:30	5:31	5:32	5:33	5:35	5:36	5:37	5:38	5:39	5:40

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.0	7:08	5:10
2	10.1	7:07	5:11
3	10.1	7:06	5:12
4	10.1	7:06	5:14
5	10.2	7:05	5:15
6	10.2	7:04	5:16
7	10.2	7:03	5:17
8	10.3	7:02	5:18
9	10.3	7:01	5:19
10	10.3	7:00	5:20
11	10.4	6:59	5:21
12	10.4	6:58	5:22
13	10.4	6:57	5:24
14	10.5	6:56	5:25
15	10.5	6:55	5:26
16	10.6	6:53	5:27
17	10.6	6:52	5:28
18	10.6	6:51	5:29
19	10.7	6:50	5:30
20	10.7	6:49	5:31
21	10.7	6:47	5:32
22	10.8	6:46	5:33
23	10.8	6:45	5:35
24	10.9	6:44	5:36
25	10.9	6:42	5:37
26	10.9	6:41	5:38
27	11.0	6:40	5:39
28	11.0	6:38	5:40

Solar energy in February

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in February, about 3.06 kWh/m².

For context, solar energy here swings from a low near 1.9 kWh/m² to a high of 6.46 kWh/m² in June across the year — February's 3.06 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
Solar energy (kWh/m²)	2.7	2.7	2.7	2.8	2.8	2.8	2.8	2.9	2.9	2.9	2.9	3.0	3.0	3.0	3.0	3.1	3.1	3.1	3.2	3.2	3.3	3.3	3.4	3.4	3.5	3.5	3.6	3.6
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

	Solar energy (kWh/m²)	Level
1	2.7	Moderate
2	2.7	Moderate
3	2.7	Moderate
4	2.8	Moderate
5	2.8	Moderate
6	2.8	Moderate
7	2.8	Moderate
8	2.9	Moderate
9	2.9	Moderate
10	2.9	Moderate
11	2.9	Moderate
12	3.0	Moderate
13	3.0	Moderate
14	3.0	Moderate
15	3.0	Moderate
16	3.1	Moderate
17	3.1	Moderate
18	3.1	Moderate
19	3.2	Moderate
20	3.2	Moderate
21	3.3	Moderate
22	3.3	Moderate
23	3.4	Moderate
24	3.4	Moderate
25	3.5	Moderate
26	3.5	Moderate
27	3.6	Moderate
28	3.6	Moderate

Planning a trip in February

Is February a good time to visit Mount Vernon?

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

1.1

Sightseeing

10th-best month of the year

0.0

Beach & pool

10th-best month of the year

February is a weaker month for outdoor sightseeing in Mount Vernon.

What to pack for Mount Vernon in February

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

In February, Mount Vernon sees daytime highs around 45°F and nights near 30°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 8 days see rain.

a warm layera heavy coatrain gear

UV index in Mount Vernon in February

LowModerateHighVery highExtreme

Clear-sky midday UV in February peaks 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 Mount Vernon peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	2	3	5	7	8	9	9	8	7	4	3	2
Level	Moderate	Moderate	High	High	Very high	Very high	Very high	Very high	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	2	Moderate
Feb	3	Moderate
Mar	5	High
Apr	7	High
May	8	Very high
Jun	9	Very high
Jul	9	Very high
Aug	8	Very high
Sep	7	High
Oct	4	Moderate
Nov	3	Moderate
Dec	2	Low

Air quality in Mount Vernon in February

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where February falls, not just the annual average.

Air quality in Mount Vernon is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (October, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	9	11	12	11	14	16	18	14	11	8	8	9
Level	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Good	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	9	Good
Feb	11	Good
Mar	12	Good
Apr	11	Good
May	14	Moderate
Jun	16	Moderate
Jul	18	Moderate
Aug	14	Moderate
Sep	11	Good
Oct	8	Good
Nov	8	Good
Dec	9	Good

Location & terrain

Where is Mount Vernon?

Mount Vernon sits at 38.3°N, 88.9°W, 512 ft above sea level, in United States. The nearest listed city is Marion, 40 mi away.

Topography around Mount Vernon

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mount Vernon.

Within 2 miles, the terrain around Mount Vernon has only modest variations in elevation — a maximum elevation change of 174 ft around an average of 489 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 279 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 499 ft.

The land around Mount Vernon is covered by trees (49%) within 2 miles, trees (42%) and cropland (37%) within 10 miles, and cropland (59%) and trees (31%) within 50 miles.

2 miles

174 ft

trees 49%

10 miles

279 ft

trees 42%

50 miles

499 ft

cropland 59%

treesgrasslandcroplandartificial surfaceswater

← January Mount Vernon year-round climate March →Best places to visit in February

February weather nearby: Marion 40 mi · Carbondale 44 mi · O'Fallon 58 mi · Belleville 60 mi · Fairview Heights 62 mi · Collinsville 63 mi · Edwardsville 66 mi · East Saint Louis 71 mi

United States travel facts

Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 100% of US; price level, 2025
GDP per capita: $90,027; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 5.8; per 100k, 2023
Road deaths: 12.7; 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 Mount Vernon (38.3173°, -88.9031°, elevation 512 ft), 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. 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 (°F)	Avg low (°F)
1	42	27
2	42	27
3	42	27
4	42	28
5	43	28
6	43	28
7	43	28
8	43	28
9	44	28
10	44	28
11	44	29
12	44	29
13	45	29
14	45	29
15	45	30
16	46	30
17	46	30
18	46	30
19	47	31
20	47	31
21	47	31
22	48	31
23	48	32
24	48	32
25	49	32
26	49	33
27	49	33
28	50	33

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	40	60
5	40	60
6	39	61
7	39	61
8	38	62
9	37	63
10	36	64
11	36	64
12	35	65
13	35	65
14	35	65
15	35	65
16	34	66
17	35	65
18	36	64
19	36	64
20	36	64
21	35	65
22	36	64
23	36	64
24	38	62
25	38	62
26	38	62
27	40	60
28	39	61

	Rain chance (%)	Snow chance (%)
1	27	9
2	27	10
3	27	10
4	27	10
5	28	10
6	28	10
7	28	10
8	29	11
9	29	11
10	30	11
11	30	11
12	30	11
13	31	11
14	31	10
15	31	10
16	31	10
17	31	10
18	31	10
19	32	10
20	32	9
21	32	9
22	32	9
23	32	9
24	32	9
25	32	8
26	31	8
27	31	8
28	31	8

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1

	Avg high (°F)	Avg low (°F)
1	42	27
2	42	27
3	42	27
4	42	28
5	43	28
6	43	28
7	43	28
8	43	28
9	44	28
10	44	28
11	44	29
12	44	29
13	45	29
14	45	29
15	45	30
16	46	30
17	46	30
18	46	30
19	47	31
20	47	31
21	47	31
22	48	31
23	48	32
24	48	32
25	49	32
26	49	33
27	49	33
28	50	33

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	40	60
5	40	60
6	39	61
7	39	61
8	38	62
9	37	63
10	36	64
11	36	64
12	35	65
13	35	65
14	35	65
15	35	65
16	34	66
17	35	65
18	36	64
19	36	64
20	36	64
21	35	65
22	36	64
23	36	64
24	38	62
25	38	62
26	38	62
27	40	60
28	39	61

	Rain chance (%)	Snow chance (%)
1	27	9
2	27	10
3	27	10
4	27	10
5	28	10
6	28	10
7	28	10
8	29	11
9	29	11
10	30	11
11	30	11
12	30	11
13	31	11
14	31	10
15	31	10
16	31	10
17	31	10
18	31	10
19	32	10
20	32	9
21	32	9
22	32	9
23	32	9
24	32	9
25	32	8
26	31	8
27	31	8
28	31	8

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1

	Avg high (°F)	Avg low (°F)
1	42	27
2	42	27
3	42	27
4	42	28
5	43	28
6	43	28
7	43	28
8	43	28
9	44	28
10	44	28
11	44	29
12	44	29
13	45	29
14	45	29
15	45	30
16	46	30
17	46	30
18	46	30
19	47	31
20	47	31
21	47	31
22	48	31
23	48	32
24	48	32
25	49	32
26	49	33
27	49	33
28	50	33

	Clearer (%)	Cloudier (%)
1	42	58
2	42	58
3	42	58
4	40	60
5	40	60
6	39	61
7	39	61
8	38	62
9	37	63
10	36	64
11	36	64
12	35	65
13	35	65
14	35	65
15	35	65
16	34	66
17	35	65
18	36	64
19	36	64
20	36	64
21	35	65
22	36	64
23	36	64
24	38	62
25	38	62
26	38	62
27	40	60
28	39	61

	Rain chance (%)	Snow chance (%)
1	27	9
2	27	10
3	27	10
4	27	10
5	28	10
6	28	10
7	28	10
8	29	11
9	29	11
10	30	11
11	30	11
12	30	11
13	31	11
14	31	10
15	31	10
16	31	10
17	31	10
18	31	10
19	32	10
20	32	9
21	32	9
22	32	9
23	32	9
24	32	9
25	32	8
26	31	8
27	31	8
28	31	8

	Dry (%)	Comfortable (%)
1	99	1
2	99	1
3	99	1
4	99	1
5	99	1
6	99	1
7	99	1
8	99	1
9	99	1
10	99	1
11	99	1
12	99	1
13	99	1
14	99	1
15	99	1
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	99	1
22	99	1
23	99	1
24	99	1
25	99	1
26	99	1
27	99	1
28	99	1