Beaver Dam weather in May

In May, Beaver Dam sees average daytime highs of 67°F and overnight lows near 48°F, with 3.7 in of precipitation across 11.4 wet days and about 14.5 hours of daylight. It is the 5th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 62°F in the first days to 72°F by the end. The sky is clear or mostly clear about 23% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 15 hours by month's end. Set against the rest of the year, May is Beaver Dam's 6th-clearest and 8th-windiest month. For the whole year in context, see Beaver Dam's year-round climate.

Daytime high
67°
5th warmest
Overnight low
48°
8th coldest
Precipitation
3.7 in
11.4 wet days
Daylight
14 h 30 min
4:37 AM – 7:07 PM
Cloud cover
65%
6th clearest
Wind
9 mph
8th windiest
Solar energy
5.75 kWh/m²
Travel score
5.9
out of 10

Beaver Dam is city in Dodge County, Wisconsin, United States.

Density
782/km²
people per km²
Founded
1852

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 62°F in the first days to 72°F by the end.

A typical May day in Beaver Dam reaches about 67°F in the afternoon and slips back to 48°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 80°F. Set against its neighbours, May runs about 12°F warmer than April and about 10°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16143
26243
36244
46344
56344
66345
76445
86445
96446
106546
116546
126547
136647
146647
156747
166748
176748
186849
196849
206949
216950
226950
237050
247051
257051
267151
277152
287152
297253
307253
317253

How May really feels in Beaver Dam

Once humidity and wind are folded in, May averages 0 days that feel above 90°F and 0 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
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Beaver Dam weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan26° / 12°1.67.86.49.10.0
Feb30° / 15°1.56.65.710.20.0
Mar42° / 26°2.39411.60.7
Apr55° / 37°3.7122.113.23.4
May67° / 48°3.711.40.114.55.9
Jun77° / 58°4.011.3015.26.5
Jul80° / 62°3.310.1014.96.5
Aug78° / 60°3.610.6013.86.7
Sep71° / 53°2.99.1012.36.8
Oct58° / 41°2.99.10.410.84.4
Nov44° / 30°2.182.29.50.8
Dec31° / 19°1.87.45.58.80.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 17% of May, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13961
23862
33862
43763
53862
63763
73763
83862
93862
103862
113862
123961
134060
144060
154060
164159
174159
184159
194258
204258
214258
224357
234357
244357
254456
264357
274357
284357
294357
304357
314357

Chance of precipitation in May

Any precipitationSnow

Beaver Dam gets around 3.7 in of rain and snow over 11.4 wet days in May. 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 39% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1392
2391
3391
4391
5391
6391
7381
8381
9381
10380
11380
12370
13370
14370
15370
16360
17360
18360
19360
20350
21350
22350
23350
24360
25360
26360
27360
28360
29370
30370
31370

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
195410
294510
394510
493520
593520
692620
791630
891630
990640
1090640
1189650
1289650
1388651
1486761
1586761
1686761
1785771
1883872
1982882
2082882
2179993
22781093
237610104
247511104
257412104
267313104
277114114
286915115
296816115
306717115
316617125

Wind in May

Winds average 9 mph in May.

Across May, 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
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 15 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over May. Sunrise moves from 4:56 AM to 4:24 AM, and sunset from 6:49 PM to 7:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.94:566:49
213.94:546:50
314.04:536:52
414.04:526:53
514.14:506:54
614.14:496:55
714.14:476:56
814.24:466:58
914.24:456:59
1014.34:447:00
1114.34:427:01
1214.34:417:02
1314.44:407:03
1414.44:397:04
1514.54:387:05
1614.54:377:07
1714.54:367:08
1814.64:357:09
1914.64:347:10
2014.64:337:11
2114.74:327:12
2214.74:317:13
2314.74:307:14
2414.84:297:15
2514.84:287:16
2614.84:277:17
2714.94:277:18
2814.94:267:19
2914.94:257:20
3014.94:257:20
3115.04:247:21

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.75 kWh/m².

For context, solar energy here swings from a low near 1.57 kWh/m² to a high of 6.28 kWh/m² in June across the year — May's 5.75 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.7Bright
145.7Bright
155.7Bright
165.8Bright
175.8Bright
185.8Bright
195.9Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Bright
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Beaver Dam?

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

5.9
Sightseeing
5th-best month of the year
2.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Beaver Dam for sightseeing.

What to pack for Beaver Dam in May

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

In May, Beaver Dam sees daytime highs around 67°F and nights near 48°F. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in Beaver Dam in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Beaver Dam peaks around June 18 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highHighModerateLowJun 18UV 8Dec 21UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug7Very high
Sep6High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Beaver Dam in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Beaver Dam is worst in July — around 15 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1415 µg/m³Nov 118 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Moderate
Mar13Moderate
Apr12Good
May13Moderate
Jun14Moderate
Jul15Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Beaver Dam?

Beaver Dam sits at 43.5°N, 88.8°W, 879 ft above sea level, in United States. The nearest listed city is Watertown, 19 mi away.

Topography around Beaver Dam

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

Within 2 miles, the terrain around Beaver Dam has only modest variations in elevation — a maximum elevation change of 135 ft around an average of 879 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 249 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,050 ft.

The land around Beaver Dam is covered by water (23%), grassland (21%) and artificial surfaces (20%) within 2 miles, cropland (63%) within 10 miles, and cropland (44%) and trees (30%) within 50 miles.

2 miles
135 ft
10 miles
249 ft
50 miles
1,050 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
May weather nearby: Watertown 19 mi · Sun Prairie 27 mi · Oconomowoc 29 mi · Fond du Lac 30 mi · West Bend 33 mi · Madison 39 mi · Germantown 40 mi · Menomonee Falls 41 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 Beaver Dam (43.4578°, -88.8373°, elevation 879 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).