Louisville weather in April: Louisville, Kentucky: normal highs, lows, rain and records for April
Louisville in April has a normal high of 70°F and a normal low of 49°F, a daily mean of 59°F, rising from 65°F on the 1st to 74°F by the 30th. Measurable precipitation falls on 12 days in a normal April, 4.80 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 9°C, 122 mm of precipitation and 0 cm of snow in April.
- NOAA stationLouisville International Airport
- Station IDUSW00093821
- Location38.18°N 85.74°W
- Elevation488 ft (149 m)
- From the center5 miles
- Population640,796
- Jan 44° 28°
- Feb 48° 31°
- Mar 58° 39°
- Apr 70° 49°
- May 78° 59°
- Jun 86° 67°
- Jul 89° 71°
- Aug 88° 70°
- Sep 82° 62°
- Oct 71° 50°
- Nov 58° 39°
- Dec 47° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Louisville in April?
The normal high is 70°F and the normal low 49°F, for a daily mean of 59.0°F. April is 10.6°F warmer than March and 9.3°F cooler than May. April is the 7th warmest month of the year in Louisville and the 2nd wettest. Across the month the normal high rises 9°F, from 65°F on April 1 to 74°F on April 30. From one year to the next April's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Aprils in three average between 56°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 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| April 1 | 65°F | 43°F | 39% | 25% |
| April 8 | 67°F | 46°F | 39% | 26% |
| April 15 | 70°F | 48°F | 40% | 26% |
| April 22 | 72°F | 51°F | 41% | 27% |
| April 30 | 74°F | 54°F | 42% | 28% |
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 | 65°F | 43°F | 39% | 25% | 12 h 40 min |
| April 2 | 65°F | 44°F | 39% | 25% | 12 h 40 min |
| April 3 | 65°F | 44°F | 39% | 25% | 12 h 40 min |
| April 4 | 66°F | 44°F | 39% | 25% | 12 h 40 min |
| April 5 | 66°F | 45°F | 39% | 25% | 12 h 50 min |
| April 6 | 66°F | 45°F | 39% | 25% | 12 h 50 min |
| April 7 | 67°F | 45°F | 39% | 25% | 12 h 50 min |
| April 8 | 67°F | 46°F | 39% | 26% | 12 h 50 min |
| April 9 | 68°F | 46°F | 39% | 26% | 12 h 50 min |
| April 10 | 68°F | 47°F | 39% | 26% | 13 h |
| April 11 | 68°F | 47°F | 39% | 26% | 13 h |
| April 12 | 69°F | 47°F | 40% | 26% | 13 h |
| April 13 | 69°F | 48°F | 40% | 26% | 13 h |
| April 14 | 69°F | 48°F | 40% | 26% | 13 h 10 min |
| April 15 | 70°F | 48°F | 40% | 26% | 13 h 10 min |
| April 16 | 70°F | 49°F | 40% | 27% | 13 h 10 min |
| April 17 | 70°F | 49°F | 40% | 27% | 13 h 10 min |
| April 18 | 71°F | 49°F | 40% | 27% | 13 h 20 min |
| April 19 | 71°F | 50°F | 40% | 27% | 13 h 20 min |
| April 20 | 71°F | 50°F | 41% | 27% | 13 h 20 min |
| April 21 | 72°F | 51°F | 41% | 27% | 13 h 20 min |
| April 22 | 72°F | 51°F | 41% | 27% | 13 h 30 min |
| April 23 | 72°F | 51°F | 41% | 28% | 13 h 30 min |
| April 24 | 72°F | 52°F | 41% | 28% | 13 h 30 min |
| April 25 | 73°F | 52°F | 41% | 28% | 13 h 30 min |
| April 26 | 73°F | 52°F | 42% | 28% | 13 h 30 min |
| April 27 | 73°F | 53°F | 42% | 28% | 13 h 40 min |
| April 28 | 73°F | 53°F | 42% | 28% | 13 h 40 min |
| April 29 | 74°F | 53°F | 42% | 28% | 13 h 40 min |
| April 30 | 74°F | 54°F | 42% | 28% | 13 h 40 min |
- Normal high
- 70°FApril average
- Normal low
- 49°FApril average
- Precipitation
- 4.80 inmonth total
- Days with precipitation
- 120.01 inch or more
- Snowfall
- 0.1 inmonth total
- Nights at 32°F or colder
- 1
- Daylight
- 12 h 40 min to 13 h 40 minApril 1 to April 30
- Days at 70°F or more
- 16
- Days at 80°F or more
- 5
- Sunshine
- 72%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093821; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Louisville in April?
On a given April day the chance of 0.01 inch or more is 40% on average, highest around April 30 (42%). In all, 4.80 in falls on 12 days of a normal April, 1 of them with an inch or more.
In a normal April in Louisville, 1 nights fall to freezing and snowfall averages 0.1 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093821.
How humid and windy is Louisville in April?
At 3 p.m. the normal temperature is 70°F with 47% relative humidity and a dew point of 49°F; at 6 a.m. it is 54°F with 78% humidity. The wind averages 8.2 mph, most often from the west-southwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 48°F | 78% | 6.4 mph | – |
| 9 a.m. | 61°F | 49°F | 66% | 8.4 mph | – |
| noon | 67°F | 49°F | 52% | 10.2 mph | – |
| 3 p.m. | 70°F | 49°F | 47% | 10.9 mph | – |
| 6 p.m. | 69°F | 49°F | 49% | 10.1 mph | – |
| 9 p.m. | 63°F | 49°F | 60% | 7.0 mph | 35% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00093821. 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 April in Louisville?
The warmest April temperature on Louisville's official record (since 1872) is 91°F, on April 30, 1894; the coldest is 21°F, on April 18, 1875. The wettest April brought 13.97 in (2011); the snowiest, 3.2 inches (1917).
The April mean against the 1991-2020 normal of 59.0°F: 2021 58.0°F (−1.0), 2022 57.1°F (−1.9), 2023 59.2°F (+0.2), 2024 62.2°F (+3.2), 2025 61.1°F (+2.1), 2026 65.7°F (+6.7). 4 of 6 ran warmer than normal.
| April | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.0°F | −1.0°F | 4.00 in |
| 2022 | 57.1°F | −1.9°F | 4.44 in |
| 2023 | 59.2°F | +0.2°F | 2.64 in |
| 2024 | 62.2°F | +3.2°F | 4.93 in |
| 2025 | 61.1°F | +2.1°F | 9.42 in |
| 2026 | 65.7°F | +6.7°F | 3.83 in |
Source: records: ACIS, NWS threaded record SDFthr; recent months: ACIS, station USW00093821. Records and recent months use complete months only.
How does April in Louisville compare across Kentucky?
Across the 68 places PlainClimate covers in Kentucky, April normal highs run from 65°F in Versailles to 73°F in Glasgow; Louisville's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.