Jasper weather in May

In May, Jasper sees average daytime highs of 75°F and overnight lows near 58°F, with 5.3 in of rain across 12.9 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 72°F in the first days to 79°F by the end. The sky is clear or mostly clear about 25% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 30 min by month's end. Set against the rest of the year, May is Jasper's 8th-clearest and 8th-windiest month. For the whole year in context, see Jasper's year-round climate.

Daytime high
75°
5th warmest
Overnight low
58°
8th coldest
Rainfall
5.3 in
12.9 wet days
Daylight
14 h 06 min
5:42 AM – 7:46 PM
Cloud cover
64%
8th clearest
Wind
7 mph
8th windiest
Solar energy
5.8 kWh/m²
Travel score
6.3
out of 10

Jasper is city in Dubois County, Indiana, United States.

Density
452/km²
people per km²
Founded
1818

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 72°F in the first days to 79°F by the end.

A typical May day in Jasper reaches about 75°F in the afternoon and slips back to 58°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 64°F and 86°F. Set against its neighbours, May runs about 9°F warmer than April and about 8°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17153
27153
37254
47254
57255
67355
77355
87356
97456
107456
117456
127457
137557
147558
157558
167558
177658
187659
197659
207659
217760
227760
237860
247861
257861
267861
277962
287962
297962
308063
318063

How May really feels in Jasper

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.

Jasper weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 26°3.69.22.79.60.0
Feb45° / 29°3.293.210.50.9
Mar55° / 38°4.411.11.511.73.5
Apr67° / 48°5.312.20.1135.7
May75° / 58°5.312.9014.16.3
Jun84° / 67°4.412014.65.4
Jul87° / 70°3.811.1014.44.8
Aug85° / 68°3.18.5013.55.4
Sep80° / 60°3.27.9012.36.9
Oct68° / 49°3.58.10116.6
Nov54° / 38°3.790.69.93.5
Dec44° / 31°3.810.12.49.40.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34060
44060
54060
64159
74060
84060
94060
104060
114060
124060
134060
144060
154060
163961
173961
183961
193961
203961
213961
224060
234060
244159
254258
264258
274258
284456
294456
304357
314456

Chance of precipitation in May

Any precipitation

Jasper gets around 5.3 in of rain over 12.9 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 41% and peaks near 44% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
144
244
343
443
543
642
742
842
941
1041
1141
1240
1340
1440
1540
1640
1740
1841
1941
2041
2141
2241
2341
2441
2541
2641
2741
2841
2941
3041
3141

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 48% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
169171220
267171330
365181430
462191540
561201540
659201650
757211660
856211670
955211680
1053211790
11522117100
12512117110
13502017130
14492017140
15481917150
16481918160
17471818170
18461718181
19451718191
20441618211
21431618221
22421519231
23411519232
24401520242
25381520252
26371520252
27361621252
28351621262
29341621263
30321722263
31311722273

Wind in May

Winds average 7 mph in May.

Across May, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17light breeze
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 5:58 AM to 5:32 AM, and sunset from 7:32 PM to 7:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:587:32
213.65:567:33
313.65:557:34
413.75:547:35
513.75:537:36
613.85:527:37
713.85:517:38
813.85:507:39
913.95:487:40
1013.95:477:41
1113.95:467:42
1214.05:457:43
1314.05:447:44
1414.05:437:44
1514.05:437:45
1614.15:427:46
1714.15:417:47
1814.15:407:48
1914.25:397:49
2014.25:387:50
2114.25:387:51
2214.25:377:52
2314.35:367:52
2414.35:357:53
2514.35:357:54
2614.35:347:55
2714.45:347:56
2814.45:337:56
2914.45:337:57
3014.45:327:58
3114.55:327:59

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.8 kWh/m².

For context, solar energy here swings from a low near 1.79 kWh/m² to a high of 6.35 kWh/m² in June across the year — May's 5.8 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.6Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.9Bright
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 Jasper?

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

6.3
Sightseeing
3rd-best month of the year
5.3
Beach & pool
5th-best month of the year

May is a reasonable time to visit Jasper for sightseeing.

What to pack for Jasper in May

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

In May, Jasper sees daytime highs around 75°F and nights near 58°F. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Jasper in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Jasper peaks around July 10 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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 10UV 9Dec 22UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Jasper 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 Jasper is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1318 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar12Good
Apr12Good
May15Moderate
Jun17Moderate
Jul18Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Jasper?

Jasper sits at 38.4°N, 86.9°W, 466 ft above sea level, in United States. The nearest listed city is Vincennes, 38 mi away.

Topography around Jasper

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

Within 2 miles, the terrain around Jasper has only modest variations in elevation — a maximum elevation change of 194 ft around an average of 502 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 417 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 696 ft.

The land around Jasper is covered by trees (37%), grassland (26%) and artificial surfaces (20%) within 2 miles, cropland (43%) and trees (38%) within 10 miles, and trees (48%) and cropland (38%) within 50 miles.

2 miles
194 ft
10 miles
417 ft
50 miles
696 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Vincennes 38 mi · Owensboro 43 mi · Evansville 45 mi · Henderson 52 mi · Bloomington 58 mi · New Albany 60 mi · Pleasure Ridge Park 61 mi · Valley Station 61 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 Jasper (38.3914°, -86.9311°, elevation 466 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).