Winona weather in May

In May, Winona sees average daytime highs of 67°F and overnight lows near 49°F, with 4.5 in of precipitation across 13.1 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 63°F in the first days to 72°F by the end. The sky is clear or mostly clear about 22% 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 Winona's 7th-clearest and 7th-windiest month. For the whole year in context, see Winona's year-round climate.

Daytime high
67°
5th warmest
Overnight low
49°
8th coldest
Precipitation
4.5 in
13.1 wet days
Daylight
14 h 36 min
4:46 AM – 7:19 PM
Cloud cover
65%
7th clearest
Wind
8 mph
7th windiest
Solar energy
5.63 kWh/m²
Travel score
5.7
out of 10

Winona is city and the county seat of Winona County, Minnesota, United States.

Density
433/km²
people per km²
Founded
1805

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 63°F in the first days to 72°F by the end.

A typical May day in Winona reaches about 67°F in the afternoon and slips back to 49°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 79°F. Set against its neighbours, May runs about 11°F warmer than April and about 9°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16243
26244
36344
46345
56345
66445
76446
86446
96547
106547
116547
126647
136648
146748
156749
166749
176749
186850
196850
206950
216951
226951
237052
247052
257052
267153
277153
287154
297254
307254
317255

How May really feels in Winona

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.

Winona 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
Jan25° / 10°1.26.76.39.10.0
Feb29° / 13°1.26.15.210.20.0
Mar42° / 25°2.394.311.60.6
Apr56° / 37°3.711.6213.23.5
May67° / 49°4.513.10.114.55.7
Jun76° / 59°5.112.4015.26.3
Jul80° / 63°4.110.60156.6
Aug78° / 60°3.79.3013.86.9
Sep71° / 52°3.39.3012.36.8
Oct57° / 40°2.98.90.510.84.2
Nov42° / 28°2.06.93.39.40.6
Dec29° / 16°1.57.368.80.0

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 61%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33763
43763
53763
63664
73664
83664
93763
103763
113763
123763
133862
143862
153862
163862
173961
183961
193961
203961
213961
224060
234060
244060
254060
264060
274159
284159
294159
304258
314258

Chance of precipitation in May

Any precipitation

Winona gets around 4.5 in of rain and snow over 13.1 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 41% and peaks near 44% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)
139
240
340
440
541
641
741
841
941
1041
1140
1240
1340
1440
1540
1640
1740
1841
1941
2041
2142
2242
2343
2443
2544
2644
2744
2844
2944
3044
3143

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 81% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
194510
294510
393610
493610
591720
691720
789830
889830
989830
1087940
1187940
1286950
1386950
1486950
1584961
16831061
17821071
18821071
19801082
20791182
21781183
22761293
23761293
24741394
257214104
267114105
277015105
286916105
296717115
306518116
316419116

Wind in May

Winds average 8 mph in May.

Across May, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
277light breeze
287calm
297calm
307calm
317calm

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 5:06 AM to 4:33 AM, and sunset from 7:02 PM to 7:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.95:067:02
214.05:047:03
314.05:037:04
414.15:017:05
514.15:007:07
614.24:597:08
714.24:577:09
814.24:567:10
914.34:557:11
1014.34:537:12
1114.44:527:14
1214.44:517:15
1314.44:507:16
1414.54:487:17
1514.54:477:18
1614.64:467:19
1714.64:457:20
1814.64:447:22
1914.74:437:23
2014.74:427:24
2114.74:417:25
2214.84:407:26
2314.84:397:27
2414.84:387:28
2514.94:387:29
2614.94:377:30
2714.94:367:31
2814.94:357:32
2915.04:357:33
3015.04:347:34
3115.04:337:35

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.63 kWh/m².

For context, solar energy here swings from a low near 1.49 kWh/m² to a high of 6.26 kWh/m² in July across the year — May's 5.63 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.6Bright
155.6Bright
165.6Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Is May a good time to visit Winona?

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

5.7
Sightseeing
5th-best month of the year
2.8
Beach & pool
5th-best month of the year

May is a reasonable time to visit Winona for sightseeing.

What to pack for Winona in May

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

In May, Winona sees daytime highs around 67°F and nights near 49°F. Worth packing: rain gear and sun protection. About 13 days see rain.

rain gearsun protection

UV index in Winona 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 Winona peaks around June 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 12 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 highVery highHighModerateLowJun 14UV 9Jan 12UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar3Moderate
Apr5High
May8Very high
Jun9Very high
Jul7High
Aug7Very high
Sep6High
Oct3Moderate
Nov2Low
Dec2Low
Location & terrain

Where is Winona?

Winona sits at 44.0°N, 91.6°W, 666 ft above sea level, in United States. The nearest listed city is Onalaska, 23 mi away.

Topography around Winona

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

Within 2 miles, the terrain around Winona has only modest variations in elevation — a maximum elevation change of 610 ft around an average of 722 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 725 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 833 ft.

The land around Winona is covered by trees (42%) and artificial surfaces (26%) within 2 miles, trees (52%) and cropland (27%) within 10 miles, and trees (46%) and cropland (42%) within 50 miles.

2 miles
610 ft
10 miles
725 ft
50 miles
833 ft
treesgrasslandcroplandartificial surfaceswaterwetland
May weather nearby: Onalaska 23 mi · North La Crosse 24 mi · La Crosse 26 mi · Rochester 41 mi · Eau Claire 53 mi · Red Wing 57 mi · Menomonie 58 mi · Austin 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
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 Winona (44.05°, -91.6393°, elevation 666 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).