Indiana weather in May: Indiana, Pennsylvania: normal highs, lows, rain and records for May
Indiana in May has a normal high of 72°F and a normal low of 46°F, a daily mean of 59°F, rising from 68°F on the 1st to 75°F by the 31st. Measurable precipitation falls on 15 days in a normal May, 4.32 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 8°C, 110 mm of precipitation in May.
- NOAA stationIndiana (3 mi SE)
- Station IDUSC00364214
- Location40.60°N 79.12°W
- Elevation1,102 ft (336 m)
- From the center3 miles
- Population14,294
- Jan 36° 18°
- Feb 39° 18°
- Mar 49° 25°
- Apr 62° 35°
- May 72° 46°
- Jun 79° 54°
- Jul 83° 59°
- Aug 81° 58°
- Sep 75° 51°
- Oct 63° 40°
- Nov 51° 30°
- Dec 41° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Indiana in May?
The normal high is 72°F and the normal low 46°F, for a daily mean of 58.7°F. May is 10.4°F warmer than April and 7.8°F cooler than June. May is the 5th warmest month of the year in Indiana and the 3rd wettest. Across the month the normal high rises 7°F, from 68°F on May 1 to 75°F on May 31. From one year to the next May's mean temperature typically moves about 3.4°F either way (NOAA's standard deviation), so roughly two Mays in three average between 55°F and 62°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 51%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 68°F | 41°F | 51% | 33% |
| May 8 | 70°F | 43°F | 50% | 33% |
| May 15 | 71°F | 46°F | 50% | 33% |
| May 22 | 73°F | 48°F | 48% | 32% |
| May 31 | 75°F | 51°F | 47% | 32% |
Every day of May: normal high, low and chance of precipitation (warmest afternoon May 31, coldest night May 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| May 1 | 68°F | 41°F | 51% | 33% | 13 h 50 min |
| May 2 | 68°F | 41°F | 51% | 33% | 14 h |
| May 3 | 68°F | 42°F | 51% | 33% | 14 h |
| May 4 | 69°F | 42°F | 51% | 33% | 14 h |
| May 5 | 69°F | 42°F | 51% | 33% | 14 h |
| May 6 | 69°F | 43°F | 51% | 33% | 14 h 10 min |
| May 7 | 70°F | 43°F | 50% | 33% | 14 h 10 min |
| May 8 | 70°F | 43°F | 50% | 33% | 14 h 10 min |
| May 9 | 70°F | 44°F | 50% | 33% | 14 h 10 min |
| May 10 | 70°F | 44°F | 50% | 33% | 14 h 10 min |
| May 11 | 71°F | 45°F | 50% | 33% | 14 h 20 min |
| May 12 | 71°F | 45°F | 50% | 33% | 14 h 20 min |
| May 13 | 71°F | 45°F | 50% | 33% | 14 h 20 min |
| May 14 | 71°F | 46°F | 50% | 33% | 14 h 20 min |
| May 15 | 71°F | 46°F | 50% | 33% | 14 h 20 min |
| May 16 | 72°F | 46°F | 50% | 33% | 14 h 30 min |
| May 17 | 72°F | 47°F | 49% | 33% | 14 h 30 min |
| May 18 | 72°F | 47°F | 49% | 32% | 14 h 30 min |
| May 19 | 72°F | 47°F | 49% | 32% | 14 h 30 min |
| May 20 | 73°F | 47°F | 49% | 32% | 14 h 30 min |
| May 21 | 73°F | 48°F | 48% | 32% | 14 h 40 min |
| May 22 | 73°F | 48°F | 48% | 32% | 14 h 40 min |
| May 23 | 73°F | 48°F | 48% | 32% | 14 h 40 min |
| May 24 | 73°F | 49°F | 48% | 32% | 14 h 40 min |
| May 25 | 74°F | 49°F | 48% | 32% | 14 h 40 min |
| May 26 | 74°F | 49°F | 47% | 32% | 14 h 40 min |
| May 27 | 74°F | 50°F | 47% | 32% | 14 h 50 min |
| May 28 | 74°F | 50°F | 47% | 32% | 14 h 50 min |
| May 29 | 75°F | 50°F | 47% | 32% | 14 h 50 min |
| May 30 | 75°F | 50°F | 47% | 32% | 14 h 50 min |
| May 31 | 75°F | 51°F | 47% | 32% | 14 h 50 min |
- Normal high
- 72°FMay average
- Normal low
- 46°FMay average
- Precipitation
- 4.32 inmonth total
- Days with precipitation
- 150.01 inch or more
- Nights at 32°F or colder
- 2
- Daylight
- 13 h 50 min to 14 h 50 minMay 1 to May 31
- Days at 70°F or more
- 19
- Days at 80°F or more
- 8
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00364214; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Indiana in May?
On a given May day the chance of 0.01 inch or more is 49% on average, highest around May 1 (51%). In all, 4.32 in falls on 15 days of a normal May, 1 of them with an inch or more.
In a normal May in Indiana, 2 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00364214.
What are the records for May in Indiana?
The warmest May temperature on this station's record (since 1946) is 91°F, on May 18, 1962; the coldest is 16°F, on May 10, 1947. The wettest May brought 8.75 in (2022); the snowiest, 1.4 inches (1963).
The May mean against the 1991-2020 normal of 58.7°F: 2021 55.3°F (−3.4), 2022 59.5°F (+0.8), 2023 55.7°F (−3.0), 2024 61.9°F (+3.2), 2025 58.1°F (−0.6), 2026 54.7°F (−4.0). 2 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 55.3°F | −3.4°F | 6.96 in |
| 2022 | 59.5°F | +0.8°F | 8.75 in |
| 2023 | 55.7°F | −3.0°F | 3.41 in |
| 2024 | 61.9°F | +3.2°F | 6.34 in |
| 2025 | 58.1°F | −0.6°F | 6.19 in |
| 2026 | 54.7°F | −4.0°F | 4.27 in |
Source: records: ACIS, station USC00364214; recent months: ACIS, station USC00364214. Records and recent months use complete months only.
How does May in Indiana compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, May normal highs run from 65°F in Laporte to 75°F in Phoenixville; Indiana's is 72°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.