Louisville, KY weather in July
Expect hot, oppressively humid weather with frequent rain in Louisville in July, with highs near 89°F and lows near 71°F. Rain falls on about 10 days. It is one of the warmest months in Louisville.
- Normal high
- 89°F
- Normal low
- 71°F
- Wet days
- 10
- 4.0 in total
- Muggy days
- 21
- dew point 65°F+
How July changes from start to finish
| July 1 | July 31 | |
|---|---|---|
| Normal high | 89°F | 89°F |
| Normal low | 70°F | 71°F |
| Chance of a wet day | 34% | 30% |
| Sunrise / sunset | 6:23 am / 9:09 pm | 6:44 am / 8:53 pm |
| Daylight | 14.8 h | 14.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical July day
- 6 am72°Fdew point 67°F
- 9 am78°Fdew point 67°F
- Noon84°Fdew point 67°F
- 3 pm87°Fdew point 66°F
- 6 pm85°Fdew point 66°F
- 9 pm80°Fdew point 67°F
NOAA hourly normals (local standard time) from Louisville Intl Airport (5 mi away); average wind 7 mph; clear or few clouds in 55% of daytime hours, mostly cloudy or overcast in 32%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 of 31
- Hot dayshigh 90°F or more14 of 31
- Muggy daysdaily mean dew point 65°F or more21 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in7 of 31
- Freezing nightslow 32°F or below0 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per July, counted from daily records for each year 1991-2020.
Rain in July
Normal precipitation is 4.0 in; a dry July brings about 3.0 in and a wet one about 5.1 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How July varies from year to year
- Warmest July, 1991-20202012: average high 96°F
- Coolest July2009: average high 81°F
- Wettest July2015: 8.7 in
- Driest July1999: 0.3 in
- Highest reading106°F (July 7, 2012)
- Lowest reading54°F (July 29, 2014)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
July compared with June and August
| June | July | August | |
|---|---|---|---|
| Normal high | 86°F | 89°F | 88°F |
| Normal low | 67°F | 71°F | 70°F |
| Wet days | 11 | 10 | 8 |
| Comfortable days | 4 | 1 | 1 |
| Daylight | 14.8 h | 14.5 h | 13.6 h |
Highs change by +3°F from June and -1°F into August.
Nearby alternatives in July
- Cooler: Fishers, IN125 mi · high 83°F · 11 wet days
How Louisville ranks in July
- Normal high166th warmest of 378 cities; 2nd of 3 in Kentucky
- Wet days234th driest of 378
- Comfortable days189th most of 340
What to pack for Louisville in July
- Light, breathable clothing – highs near 89°F and about 21 muggy days
- A rain jacket or umbrella – rain on about 10 days
- Sunglasses and sunscreen – about 14.5 hours of daylight and highs near 89°F
Heating and cooling
July has 0 heating degree days and 462 cooling degree days (base 65°F), 8% of the year's total heating and cooling demand.
Questions
How hot is Louisville in July?
The normal high is 89°F and the normal low is 71°F. From 1991 to 2020 the hottest July reading was 106°F (most recently on July 7, 2012).
Does it rain a lot in Louisville in July?
About 10 days in July have at least 0.01 in of precipitation, and the normal total is 4.1 in. The wettest July in 1991-2020 was in 2015 (8.7 in); the driest was in 1999 (0.3 in).
Is July a good time to visit Louisville?
July ranks 9th of 12 months on our comfort score for Louisville (45 out of 100). It has about 1 comfortable day and about 14 days at 90°F or hotter. The best months are April, May and October.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Louisville Intl Airport (USW00093821), 5.0 mi WNW of the city center, 488 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Louisville Bowman Fld (USW00013810), 4.3 mi N of the city center, 540 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Louisville Intl-Standiford Field Airport (724230-93821), 4.5 mi W of the city center, 480 ft . Hourly observations, 1991-2020.