Slidell weather in April: Slidell, Louisiana: normal highs, lows, rain and records for April
Slidell in April has a normal high of 78°F and a normal low of 56°F, a daily mean of 67°F, rising from 75°F on the 1st to 81°F by the 30th. Measurable precipitation falls on 9 days in a normal April, 5.21 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 13°C, 132 mm of precipitation in April.
- NOAA stationSlidell Airport
- Station IDUSW00053865
- Location30.34°N 89.82°W
- Elevation27 ft (8 m)
- Population28,440
- Jan 62° 41°
- Feb 66° 44°
- Mar 72° 50°
- Apr 78° 56°
- May 85° 64°
- Jun 90° 71°
- Jul 91° 73°
- Aug 91° 73°
- Sep 88° 69°
- Oct 81° 57°
- Nov 71° 47°
- 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 Slidell in April?
The normal high is 78°F and the normal low 56°F, for a daily mean of 67.0°F. April is 6.1°F warmer than March and 7.3°F cooler than May. April is the 7th warmest month of the year in Slidell and the 6th wettest. Across the month the normal high rises 6°F, from 75°F on April 1 to 81°F on April 30. From one year to the next April's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 65°F and 70°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 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 75°F | 53°F | 27% | 18% |
| April 8 | 76°F | 54°F | 28% | 18% |
| April 15 | 78°F | 56°F | 27% | 18% |
| April 22 | 79°F | 58°F | 27% | 17% |
| April 30 | 81°F | 59°F | 26% | 17% |
Every day of April: normal high, low and chance of precipitation (warmest afternoon April 30, coldest night April 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| April 1 | 75°F | 53°F | 27% | 18% | 12 h 30 min |
| April 2 | 75°F | 53°F | 27% | 18% | 12 h 30 min |
| April 3 | 75°F | 53°F | 27% | 18% | 12 h 30 min |
| April 4 | 76°F | 54°F | 27% | 18% | 12 h 30 min |
| April 5 | 76°F | 54°F | 27% | 18% | 12 h 30 min |
| April 6 | 76°F | 54°F | 27% | 18% | 12 h 40 min |
| April 7 | 76°F | 54°F | 28% | 18% | 12 h 40 min |
| April 8 | 76°F | 54°F | 28% | 18% | 12 h 40 min |
| April 9 | 77°F | 55°F | 28% | 18% | 12 h 40 min |
| April 10 | 77°F | 55°F | 27% | 18% | 12 h 40 min |
| April 11 | 77°F | 55°F | 28% | 18% | 12 h 50 min |
| April 12 | 77°F | 55°F | 28% | 18% | 12 h 50 min |
| April 13 | 77°F | 56°F | 27% | 18% | 12 h 50 min |
| April 14 | 78°F | 56°F | 27% | 18% | 12 h 50 min |
| April 15 | 78°F | 56°F | 27% | 18% | 12 h 50 min |
| April 16 | 78°F | 56°F | 27% | 18% | 12 h 50 min |
| April 17 | 78°F | 56°F | 27% | 18% | 13 h |
| April 18 | 78°F | 57°F | 27% | 18% | 13 h |
| April 19 | 79°F | 57°F | 27% | 18% | 13 h |
| April 20 | 79°F | 57°F | 27% | 18% | 13 h |
| April 21 | 79°F | 57°F | 27% | 18% | 13 h |
| April 22 | 79°F | 58°F | 27% | 17% | 13 h |
| April 23 | 80°F | 58°F | 27% | 17% | 13 h 10 min |
| April 24 | 80°F | 58°F | 27% | 17% | 13 h 10 min |
| April 25 | 80°F | 58°F | 26% | 17% | 13 h 10 min |
| April 26 | 80°F | 59°F | 26% | 17% | 13 h 10 min |
| April 27 | 80°F | 59°F | 26% | 17% | 13 h 10 min |
| April 28 | 81°F | 59°F | 26% | 17% | 13 h 10 min |
| April 29 | 81°F | 59°F | 26% | 17% | 13 h 20 min |
| April 30 | 81°F | 59°F | 26% | 17% | 13 h 20 min |
- Normal high
- 78°FApril average
- Normal low
- 56°FApril average
- Precipitation
- 5.21 inmonth total
- Days with precipitation
- 90.01 inch or more
- Daylight
- 12 h 30 min to 13 h 20 minApril 1 to April 30
- Days at 70°F or more
- 28
- Days at 80°F or more
- 15
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00053865; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Slidell in April?
On a given April day the chance of 0.01 inch or more is 27% on average, highest around April 7 (28%). In all, 5.21 in falls on 9 days of a normal April, 2 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00053865.
What are the records for April in Slidell?
The warmest April temperature on this station's record (since 1994) is 91°F, on April 28, 1999; the coldest is 32°F, on April 9, 2000. The wettest April brought 13.15 in (1991).
The April mean against the 1991-2020 normal of 67.0°F: 2021 66.1°F (−0.9), 2022 68.2°F (+1.2), 2023 69.3°F (+2.3), 2024 69.7°F (+2.7), 2025 70.1°F (+3.1), 2026 68.8°F (+1.8). 5 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.1°F | −0.9°F | 12.01 in |
| 2022 | 68.2°F | +1.2°F | 3.05 in |
| 2023 | 69.3°F | +2.3°F | 2.82 in |
| 2024 | 69.7°F | +2.7°F | 8.45 in |
| 2025 | 70.1°F | +3.1°F | 1.29 in |
| 2026 | 68.8°F | +1.8°F | 3.95 in |
Source: records: ACIS, station USW00053865; recent months: ACIS, station USW00053865. Records and recent months use complete months only.
How does April in Slidell compare across Louisiana?
Across the 65 places PlainClimate covers in Louisiana, April normal highs run from 74°F in Bastrop to 79°F in Chalmette; Slidell's is 78°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.