Lafayette weather in May: Lafayette, Indiana: normal highs, lows, rain and records for May
Lafayette in May has a normal high of 73°F and a normal low of 51°F, a daily mean of 62°F, rising from 68°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 13 days in a normal May, 4.04 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 10°C, 103 mm of precipitation in May.
- NOAA stationLafayette Purdue University Airport
- Station IDUSW00014835
- Location40.41°N 86.94°W
- Elevation599 ft (183 m)
- Population71,757
- Jan 33° 18°
- Feb 38° 21°
- Mar 50° 30°
- Apr 62° 40°
- May 73° 51°
- Jun 81° 60°
- Jul 84° 63°
- Aug 83° 62°
- Sep 77° 54°
- Oct 65° 43°
- Nov 50° 33°
- Dec 38° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lafayette in May?
The normal high is 73°F and the normal low 51°F, for a daily mean of 61.6°F. May is 10.5°F warmer than April and 9.1°F cooler than June. May is the 5th warmest month of the year in Lafayette and the 3rd wettest. Across the month the normal high rises 9°F, from 68°F on May 1 to 77°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 58°F and 65°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 41%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 68°F | 46°F | 40% | 27% |
| May 8 | 70°F | 48°F | 41% | 27% |
| May 15 | 72°F | 50°F | 41% | 27% |
| May 22 | 75°F | 53°F | 41% | 26% |
| May 31 | 77°F | 56°F | 41% | 26% |
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 | 46°F | 40% | 27% | 13 h 50 min |
| May 2 | 68°F | 46°F | 40% | 27% | 14 h |
| May 3 | 68°F | 46°F | 40% | 27% | 14 h |
| May 4 | 69°F | 47°F | 40% | 27% | 14 h |
| May 5 | 69°F | 47°F | 40% | 27% | 14 h |
| May 6 | 69°F | 47°F | 40% | 27% | 14 h |
| May 7 | 70°F | 48°F | 41% | 27% | 14 h 10 min |
| May 8 | 70°F | 48°F | 41% | 27% | 14 h 10 min |
| May 9 | 70°F | 48°F | 41% | 27% | 14 h 10 min |
| May 10 | 71°F | 49°F | 41% | 27% | 14 h 10 min |
| May 11 | 71°F | 49°F | 41% | 27% | 14 h 20 min |
| May 12 | 71°F | 49°F | 41% | 27% | 14 h 20 min |
| May 13 | 72°F | 50°F | 41% | 27% | 14 h 20 min |
| May 14 | 72°F | 50°F | 41% | 27% | 14 h 20 min |
| May 15 | 72°F | 50°F | 41% | 27% | 14 h 20 min |
| May 16 | 73°F | 51°F | 41% | 27% | 14 h 30 min |
| May 17 | 73°F | 51°F | 41% | 27% | 14 h 30 min |
| May 18 | 73°F | 51°F | 41% | 26% | 14 h 30 min |
| May 19 | 74°F | 52°F | 41% | 26% | 14 h 30 min |
| May 20 | 74°F | 52°F | 41% | 26% | 14 h 30 min |
| May 21 | 74°F | 52°F | 41% | 26% | 14 h 30 min |
| May 22 | 75°F | 53°F | 41% | 26% | 14 h 40 min |
| May 23 | 75°F | 53°F | 41% | 26% | 14 h 40 min |
| May 24 | 75°F | 53°F | 41% | 26% | 14 h 40 min |
| May 25 | 76°F | 54°F | 41% | 26% | 14 h 40 min |
| May 26 | 76°F | 54°F | 41% | 26% | 14 h 40 min |
| May 27 | 76°F | 54°F | 41% | 26% | 14 h 40 min |
| May 28 | 76°F | 55°F | 41% | 26% | 14 h 50 min |
| May 29 | 77°F | 55°F | 41% | 26% | 14 h 50 min |
| May 30 | 77°F | 55°F | 41% | 26% | 14 h 50 min |
| May 31 | 77°F | 56°F | 41% | 26% | 14 h 50 min |
- Normal high
- 73°FMay average
- Normal low
- 51°FMay average
- Precipitation
- 4.04 inmonth total
- Days with precipitation
- 130.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 50 min to 14 h 50 minMay 1 to May 31
- Days at 70°F or more
- 21
- Days at 80°F or more
- 9
- Sunshine
- 71%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014835; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lafayette in May?
On a given May day the chance of 0.01 inch or more is 41% on average, highest around May 31 (41%). In all, 4.04 in falls on 13 days of a normal May, 1 of them with an inch or more.
In a normal May in Lafayette, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014835.
How humid and windy is Lafayette in May?
At 3 p.m. the normal temperature is 76°F with 50% relative humidity and a dew point of 56°F; at 6 a.m. it is 59°F with 85% humidity. The wind averages 7.1 mph, most often from the west-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 59°F | 54°F | 85% | 4.5 mph | 59% |
| 9 a.m. | 67°F | 57°F | 69% | 7.7 mph | 63% |
| noon | 74°F | 57°F | 55% | 9.8 mph | 56% |
| 3 p.m. | 76°F | 56°F | 50% | 10.1 mph | 54% |
| 6 p.m. | 75°F | 55°F | 51% | 9.3 mph | 62% |
| 9 p.m. | 67°F | 56°F | 68% | 5.9 mph | 69% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00014835. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for May in Lafayette?
The warmest May temperature on this station's record (since 1944) is 96°F, on May 28, 2018; the coldest is 25°F, on May 10, 1966. The wettest May brought 7.25 in (1989).
The May mean against the 1991-2020 normal of 61.6°F: 2021 63.8°F (+2.2), 2022 64.9°F (+3.3), 2023 63.3°F (+1.7), 2024 65.8°F (+4.2), 2025 61.4°F (−0.3), 2026 60.5°F (−1.1). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.8°F | +2.2°F | 5.59 in |
| 2022 | 64.9°F | +3.3°F | 3.55 in |
| 2023 | 63.3°F | +1.7°F | 0.83 in |
| 2024 | 65.8°F | +4.2°F | 2.79 in |
| 2025 | 61.4°F | −0.3°F | 3.38 in |
| 2026 | 60.5°F | −1.1°F | 2.16 in |
Source: records: ACIS, station USW00014835; recent months: ACIS, station USW00014835. Records and recent months use complete months only.
How does May in Lafayette compare across Indiana?
Across the 99 places PlainClimate covers in Indiana, May normal highs run from 69°F in Angola to 79°F in Boonville; Lafayette's is 73°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.