Green Bay weather in March

In March, Green Bay sees average daytime highs of 40°F and overnight lows near 24°F, with 2.2 in of precipitation across 8.3 wet days and about 11.6 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 34°F in the first days to 46°F by the end. The sky is clear or mostly clear about 24% of the time in March, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of March to 12 h 24 min by month's end. Set against the rest of the year, March is Green Bay's 7th-clearest and 7th-windiest month. For the whole year in context, see Green Bay's year-round climate.

Daytime high
40°
9th warmest
Overnight low
24°
4th coldest
Precipitation
2.2 in
8.3 wet days
Daylight
11 h 36 min
6:13 AM – 5:50 PM
Cloud cover
65%
7th clearest
Wind
9 mph
7th windiest
Solar energy
4 kWh/m²
Travel score
0.4
out of 10

Green Bay is city in and county seat of Brown County, Wisconsin, United States.

Density
727/km²
people per km²
Founded
1634

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 46°F by the end.

A typical March day in Green Bay reaches about 40°F in the afternoon and slips back to 24°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 27°F and 55°F. Set against its neighbours, March runs about 12°F warmer than February and about 13°F cooler than April.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
13317
23318
33418
43419
53519
63519
73620
83620
93721
103721
113822
123822
133923
144023
154024
164124
174125
184225
194226
204226
214326
224327
234427
244428
254428
264528
274529
284629
294629
304730
314730

How March really feels in Green Bay

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
14 feel bitter (≤ 14°F)

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

Green Bay weather by month

How March compares with the rest of the year at a glance. March is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan26° / 12°1.57.66.990.0
Feb29° / 14°1.36.45.610.10.0
Mar40° / 24°2.28.34.411.60.4
Apr53° / 35°3.111.4313.23.0
May66° / 47°3.411.40.114.65.7
Jun76° / 57°3.611.2015.36.5
Jul80° / 62°3.511.30156.4
Aug78° / 60°3.410.4013.96.8
Sep70° / 52°2.69.1012.36.7
Oct57° / 41°2.89.50.310.74.0
Nov43° / 29°2.18.22.49.40.7
Dec31° / 19°1.87.35.68.70.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 14% of March, with mostly cloudy or overcast conditions the remaining 62%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23664
33664
43961
53961
63961
74060
84060
94060
104060
114060
124060
134159
144159
154060
163961
173961
183961
193961
203862
213763
223664
233664
243664
253565
263466
273466
283466
293565
303466
313466

Chance of precipitation in March

Any precipitationSnow

Green Bay gets around 2.2 in of rain and snow over 8.3 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 27% and peaks near 34% on the wettest days, and about 4 days bring snow. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12620
22619
32619
42619
52619
62618
72618
82617
92617
102617
112616
122616
132615
142615
152614
162514
172513
182513
192512
202612
212612
222712
232712
242812
252911
263012
273012
283112
293212
303312
313412

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
14991
15991
16991
17991
18991
19991
20991
21991
22991
23991
24991
25991
26991
27991
28991
29991
30991
311000

Wind in March

Winds average 9 mph in March.

Across March, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
228light breeze
238light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 10 h 48 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 96 minutes over March. Sunrise moves from 6:40 AM to 5:45 AM, and sunset from 5:30 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.86:405:30
210.96:385:32
310.96:375:33
411.06:355:34
511.06:335:36
611.16:315:37
711.16:305:38
811.26:285:40
911.26:265:41
1011.36:245:42
1111.46:225:44
1211.46:215:45
1311.56:195:46
1411.56:175:48
1511.66:155:49
1611.66:135:50
1711.76:115:52
1811.76:095:53
1911.86:085:54
2011.86:065:55
2111.96:045:57
2211.96:025:58
2312.06:005:59
2412.05:586:00
2512.15:566:02
2612.15:546:03
2712.25:526:04
2812.35:506:06
2912.35:496:07
3012.45:476:08
3112.45:456:09

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4 kWh/m².

For context, solar energy here swings from a low near 1.42 kWh/m² to a high of 6.32 kWh/m² in June across the year — March's 4 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.5Moderate
33.5Moderate
43.6Moderate
53.6Moderate
63.6Moderate
73.7Moderate
83.7Moderate
93.8Moderate
103.8Moderate
113.9Moderate
123.9Moderate
133.9Moderate
144.0Moderate
154.0Moderate
164.0Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.4Bright
294.4Bright
304.4Bright
314.5Bright
Planning a trip in March

Is March a good time to visit Green Bay?

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

0.4
Sightseeing
9th-best month of the year
0.0
Beach & pool
8th-best month of the year

March is a weaker month for outdoor sightseeing in Green Bay.

What to pack for Green Bay in March

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

In March, Green Bay sees daytime highs around 40°F and nights near 24°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 8 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Green Bay in March

The nearest coast averages about 34°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 10 mi away) is warmest in August at about 69°F and coldest in March near 34°F.

It's comfortable for a long swim from Aug 9 to Aug 23 — about 0.5 months when the water holds above 68°F.

30°40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°F)Comfort
Jan37Bracing
Feb35Bracing
Mar34Bracing
Apr37Bracing
May43Bracing
Jun52Bracing
Jul65Cool
Aug69Refreshing
Sep64Cool
Oct55Bracing
Nov46Bracing
Dec39Bracing

UV index in Green Bay 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 Green Bay peaks around June 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 18UV 9Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May8Very high
Jun9Very high
Jul8Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Green Bay?

Green Bay sits at 44.5°N, 88.0°W, 591 ft above sea level, in United States. The nearest listed city is Ashwaubenon, 3.7 mi away.

Topography around Green Bay

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

Within 2 miles, the terrain around Green Bay has only modest variations in elevation — a maximum elevation change of 135 ft around an average of 597 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 433 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 728 ft.

The land around Green Bay is covered by artificial surfaces (51%) and trees (30%) within 2 miles, trees (29%) and cropland (21%) within 10 miles, and trees (30%), cropland (30%) and water (28%) within 50 miles.

2 miles
135 ft
10 miles
433 ft
50 miles
728 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Ashwaubenon 3.7 mi · Howard 3.7 mi · De Pere 5.0 mi · Bellevue 6.8 mi · Kaukauna 21 mi · Appleton 27 mi · Menasha 30 mi · Neenah 32 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 Green Bay (44.5192°, -88.0198°, elevation 591 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).