Baton Rouge weather in May: Baton Rouge, Louisiana: normal highs, lows, rain and records for May
Baton Rouge in May has a normal high of 86°F and a normal low of 65°F, a daily mean of 76°F, rising from 82°F on the 1st to 89°F by the 31st. Measurable precipitation falls on 8 days in a normal May, 5.23 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 30°C and low of 18°C, 133 mm of precipitation in May.
- NOAA stationBaton Rouge Metro Airport
- Station IDUSW00013970
- Location30.54°N 91.15°W
- Elevation64 ft (20 m)
- From the center7 miles
- Population220,907
- Jan 62° 42°
- Feb 67° 45°
- Mar 73° 51°
- Apr 79° 57°
- May 86° 65°
- Jun 91° 72°
- Jul 92° 74°
- Aug 92° 73°
- Sep 89° 69°
- Oct 81° 58°
- Nov 71° 48°
- Dec 64° 43°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Baton Rouge in May?
The normal high is 86°F and the normal low 65°F, for a daily mean of 75.5°F. May is 7.5°F warmer than April and 5.5°F cooler than June. May is the 5th warmest month of the year in Baton Rouge and the 5th wettest. Across the month the normal high rises 7°F, from 82°F on May 1 to 89°F on May 31. From one year to the next May's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Mays in three average between 74°F and 78°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| May 1 | 82°F | 61°F | 25% | 18% |
| May 8 | 84°F | 63°F | 25% | 18% |
| May 15 | 86°F | 65°F | 27% | 19% |
| May 22 | 87°F | 67°F | 29% | 20% |
| May 31 | 89°F | 69°F | 33% | 23% |
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 | 82°F | 61°F | 25% | 18% | 13 h 20 min |
| May 2 | 83°F | 61°F | 25% | 18% | 13 h 20 min |
| May 3 | 83°F | 62°F | 25% | 18% | 13 h 20 min |
| May 4 | 83°F | 62°F | 25% | 18% | 13 h 20 min |
| May 5 | 83°F | 62°F | 25% | 18% | 13 h 30 min |
| May 6 | 84°F | 62°F | 25% | 18% | 13 h 30 min |
| May 7 | 84°F | 63°F | 25% | 18% | 13 h 30 min |
| May 8 | 84°F | 63°F | 25% | 18% | 13 h 30 min |
| May 9 | 84°F | 63°F | 25% | 18% | 13 h 30 min |
| May 10 | 85°F | 64°F | 26% | 19% | 13 h 30 min |
| May 11 | 85°F | 64°F | 26% | 19% | 13 h 30 min |
| May 12 | 85°F | 64°F | 26% | 19% | 13 h 40 min |
| May 13 | 85°F | 64°F | 26% | 19% | 13 h 40 min |
| May 14 | 85°F | 65°F | 27% | 19% | 13 h 40 min |
| May 15 | 86°F | 65°F | 27% | 19% | 13 h 40 min |
| May 16 | 86°F | 65°F | 27% | 19% | 13 h 40 min |
| May 17 | 86°F | 66°F | 27% | 20% | 13 h 40 min |
| May 18 | 86°F | 66°F | 28% | 20% | 13 h 40 min |
| May 19 | 87°F | 66°F | 28% | 20% | 13 h 50 min |
| May 20 | 87°F | 66°F | 28% | 20% | 13 h 50 min |
| May 21 | 87°F | 67°F | 29% | 20% | 13 h 50 min |
| May 22 | 87°F | 67°F | 29% | 20% | 13 h 50 min |
| May 23 | 87°F | 67°F | 29% | 21% | 13 h 50 min |
| May 24 | 88°F | 67°F | 30% | 21% | 13 h 50 min |
| May 25 | 88°F | 68°F | 30% | 21% | 13 h 50 min |
| May 26 | 88°F | 68°F | 31% | 21% | 13 h 50 min |
| May 27 | 88°F | 68°F | 31% | 22% | 13 h 50 min |
| May 28 | 88°F | 68°F | 32% | 22% | 14 h |
| May 29 | 89°F | 69°F | 32% | 22% | 14 h |
| May 30 | 89°F | 69°F | 33% | 23% | 14 h |
| May 31 | 89°F | 69°F | 33% | 23% | 14 h |
- Normal high
- 86°FMay average
- Normal low
- 65°FMay average
- Precipitation
- 5.23 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 8
- Daylight
- 13 h 20 min to 14 hMay 1 to May 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 27
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013970; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Baton Rouge in May?
On a given May day the chance of 0.01 inch or more is 28% on average, highest around May 31 (33%). In all, 5.23 in falls on 8 days of a normal May, 2 of them with an inch or more.
In a normal May in Baton Rouge, 8 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013970.
What are the records for May in Baton Rouge?
The warmest May temperature on Baton Rouge's official record (since 1892) is 101°F, on May 13, 1922; the coldest is 40°F, on May 1, 1908. The wettest May brought 23.73 in (1907).
The May mean against the 1991-2020 normal of 75.5°F: 2021 73.9°F (−1.6), 2022 78.1°F (+2.6), 2023 78.0°F (+2.5), 2024 80.7°F (+5.2), 2025 76.4°F (+0.9), 2026 75.0°F (−0.5). 4 of 6 ran warmer than normal.
| May | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.9°F | −1.6°F | 13.23 in |
| 2022 | 78.1°F | +2.6°F | 3.94 in |
| 2023 | 78.0°F | +2.5°F | 4.57 in |
| 2024 | 80.7°F | +5.2°F | 7.91 in |
| 2025 | 76.4°F | +0.9°F | 8.51 in |
| 2026 | 75.0°F | −0.5°F | 11.60 in |
Source: records: ACIS, NWS threaded record BTRthr; recent months: ACIS, station USW00013970. Records and recent months use complete months only.
How does May in Baton Rouge compare across Louisiana?
Across the 65 places PlainClimate covers in Louisiana, May normal highs run from 81°F in Bastrop to 87°F in Chalmette; Baton Rouge's is 86°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.