Deerfield weather in March

In March, Deerfield sees average daytime highs of 37°F and overnight lows near 29°F, with 3.0 in of precipitation across 9.8 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 34°F in the first days to 41°F by the end. The sky is clear or mostly clear about 25% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Deerfield's 7th-clearest and 7th-windiest month. For the whole year in context, see Deerfield's year-round climate.

Daytime high
37°
9th warmest
Overnight low
29°
4th coldest
Precipitation
3.0 in
9.8 wet days
Daylight
11 h 36 min
6:12 AM – 5:50 PM
Cloud cover
65%
7th clearest
Wind
12 mph
7th windiest
Solar energy
4.17 kWh/m²
Travel score
0.0
out of 10

Deerfield is village in Illinois, United States.

Founded
1903

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

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 34°F in the first days to 41°F by the end.

A typical March day in Deerfield reaches about 37°F in the afternoon and slips back to 29°F overnight — a 8°F spread between the day's warmth and the night's chill. On most days the high lands between 29°F and 48°F. Set against its neighbours, March runs about 6°F warmer than February and about 9°F cooler than April.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
13424
23424
33424
43425
53525
63525
73526
83526
93626
103627
113627
123728
133728
143728
153729
163729
173829
183830
193830
203830
213931
223931
233931
244032
254032
264033
274033
284133
294133
304134
314234

How March really feels in Deerfield

Once humidity and wind are folded in, March averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
31
5 feel bitter (≤ 14°F)

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

Deerfield weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 21°2.99.879.30.0
Feb31° / 21°2.47.75.110.30.0
Mar37° / 29°3.09.83.211.60.0
Apr46° / 39°4.8121.413.11.3
May58° / 50°4.111.7014.44.1
Jun71° / 64°3.510.50156.5
Jul78° / 70°3.110.5014.86.8
Aug77° / 70°3.810.7013.77.0
Sep71° / 63°3.39.5012.36.8
Oct58° / 51°4.010.50.110.84.4
Nov46° / 39°3.4101.39.61.2
Dec36° / 28°3.1104.990.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 13% of March, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33763
43763
53763
63862
73862
83862
93961
103961
114060
124060
134060
144060
153961
163961
173961
183961
193961
203961
213961
223961
233862
243862
253763
263862
273763
283763
293862
303763
313763

Chance of precipitation in March

Any precipitationSnow

Deerfield gets around 3.0 in of rain and snow over 9.8 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 36% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13218
23218
33217
43217
53216
63215
73215
83114
93114
103113
113112
123112
133111
143011
153010
163010
17309
18309
19308
20308
21318
22317
23327
24327
25337
26346
27346
28356
29356
30366
31366

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March 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 March

Winds average 12 mph in March.

Across March, daily wind ranges from about 12 mph on the calmest days to 13 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
113breezy
213breezy
313breezy
413breezy
513breezy
613breezy
713breezy
813breezy
913breezy
1012breezy
1112breezy
1212breezy
1312breezy
1412breezy
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812breezy
2912breezy
3012breezy
3113breezy

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 54 min at the start of March to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 90 minutes over March. Sunrise moves from 6:37 AM to 5:45 AM, and sunset from 5:33 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.96:375:33
211.06:355:34
311.06:345:35
411.16:325:36
511.16:305:37
611.26:295:39
711.26:275:40
811.36:255:41
911.36:245:42
1011.46:225:43
1111.46:205:45
1211.56:195:46
1311.56:175:47
1411.66:155:48
1511.66:135:49
1611.66:125:50
1711.76:105:52
1811.76:085:53
1911.86:065:54
2011.86:055:55
2111.96:035:56
2211.96:015:57
2312.05:595:59
2412.05:576:00
2512.15:566:01
2612.15:546:02
2712.25:526:03
2812.25:506:04
2912.35:496:05
3012.35:476:07
3112.45:456:08

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.17 kWh/m².

For context, solar energy here swings from a low near 1.48 kWh/m² to a high of 6.5 kWh/m² in June across the year — March's 4.17 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.7Moderate
43.7Moderate
53.8Moderate
63.8Moderate
73.9Moderate
83.9Moderate
94.0Moderate
104.0Bright
114.0Bright
124.1Bright
134.1Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.6Bright
314.6Bright
Planning a trip in March

Is March a good time to visit Deerfield?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
7th-best month of the year

March is a weaker month for outdoor sightseeing in Deerfield.

What to pack for Deerfield in March

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

In March, Deerfield sees daytime highs around 37°F and nights near 29°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Deerfield in March

The nearest coast averages about 36°F in March — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 12 mi away) is warmest in August at about 72°F and coldest in February near 36°F.

It's comfortable for a long swim from Jul 14 to Sep 14 — about 2.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr39Bracing
May44Bracing
Jun56Bracing
Jul69Refreshing
Aug72Refreshing
Sep68Refreshing
Oct58Bracing
Nov48Bracing
Dec42Bracing

UV index in Deerfield in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Deerfield peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Deerfield in March

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Deerfield is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 921 µg/m³Oct 2410 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar18Moderate
Apr19Moderate
May20Moderate
Jun21Moderate
Jul21Moderate
Aug18Moderate
Sep15Moderate
Oct10Good
Nov10Good
Dec11Good
Location & terrain

Where is Deerfield?

Deerfield sits at 42.2°N, 87.8°W, 686 ft above sea level, in United States. The nearest listed city is Highland Park, 2.5 mi away.

Topography around Deerfield

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

Within 2 miles, the terrain around Deerfield has only modest variations in elevation — a maximum elevation change of 138 ft around an average of 676 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 269 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 892 ft.

The land around Deerfield is covered by trees (51%) and artificial surfaces (31%) within 2 miles, trees (36%), water (28%) and artificial surfaces (23%) within 10 miles, and water (40%) within 50 miles.

2 miles
138 ft
10 miles
269 ft
50 miles
892 ft
treesgrasslandcroplandartificial surfaceswater
March weather nearby: Highland Park 2.5 mi · Northbrook 3.1 mi · Wheeling 5.0 mi · Lake Forest 6.2 mi · Buffalo Grove 6.2 mi · Prospect Heights 6.8 mi · Glenview 7.5 mi · Vernon Hills 7.5 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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 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 Deerfield (42.1711°, -87.8445°, elevation 686 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).