Louisville, Mississippi climate: Normal weather by month, frost dates and records
Louisville's normal year runs from 34°F January nights to 92°F July afternoons, with 57.5 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.5°C, January lows of 1°C, July highs of 33°C, 1,461 mm of precipitation a year.
- NOAA stationLouisville
- Station IDUSC00225247
- Location33.14°N 89.07°W
- Elevation581 ft (177 m)
- Population5,899
On October 23, the normal high in Louisville is 74°F and the normal low 50°F, and the chance of measurable rain or snow is 21%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Louisville.
- Jan 55° 34°
- Feb 59° 37°
- Mar 68° 44°
- Apr 75° 51°
- May 83° 60°
- Jun 89° 67°
- Jul 92° 71°
- Aug 91° 70°
- Sep 86° 64°
- Oct 77° 53°
- Nov 65° 42°
- Dec 57° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Louisville each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 34°F. The most precipitation falls in February (5.68 in), the least in June (3.95 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 55°F | 34°F | 44.4°F | 5.05 | 9 | <1 | 16 | 10 h 10 min |
| February | 59°F | 37°F | 48.0°F | 5.68 | 9 | <1 | 12 | 11 h |
| March | 68°F | 44°F | 55.7°F | 5.47 | 9 | <1 | 5 | 12 h |
| April | 75°F | 51°F | 63.0°F | 5.31 | 7 | <1 | 1 | 13 h |
| May | 83°F | 60°F | 71.4°F | 4.96 | 9 | 4 | <1 | 13 h 50 min |
| June | 89°F | 67°F | 78.2°F | 3.95 | 8 | 15 | <1 | 14 h 20 min |
| July | 92°F | 71°F | 81.0°F | 4.62 | 10 | 20 | <1 | 14 h 10 min |
| August | 91°F | 70°F | 80.5°F | 4.76 | 9 | 18 | <1 | 13 h 20 min |
| September | 86°F | 64°F | 75.2°F | 4.05 | 6 | 9 | <1 | 12 h 30 min |
| October | 77°F | 53°F | 64.5°F | 4.21 | 6 | 1 | <1 | 11 h 20 min |
| November | 65°F | 42°F | 53.5°F | 4.21 | 7 | <1 | 6 | 10 h 30 min |
| December | 57°F | 36°F | 46.5°F | 5.24 | 9 | <1 | 14 | 10 h |
| Year (annual) | 75°F | 52°F | 63.5°F | 57.51 | 97 | 66 | 54 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 13°C | 1°C | 6.9°C | 128 mm |
| February | 15°C | 3°C | 8.9°C | 144 mm |
| March | 20°C | 6°C | 13.2°C | 139 mm |
| April | 24°C | 11°C | 17.2°C | 135 mm |
| May | 28°C | 16°C | 21.9°C | 126 mm |
| June | 32°C | 20°C | 25.7°C | 100 mm |
| July | 33°C | 21°C | 27.2°C | 117 mm |
| August | 33°C | 21°C | 26.9°C | 121 mm |
| September | 30°C | 18°C | 24.0°C | 103 mm |
| October | 25°C | 11°C | 18.1°C | 107 mm |
| November | 18°C | 6°C | 11.9°C | 107 mm |
| December | 14°C | 2°C | 8.1°C | 133 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00225247; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Louisville?
Normal highs sit between 65°F and 85°F in March, April, May and October. Of those, October has the fewest days with rain (6).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00225247.
When is the last frost in Louisville?
In Louisville, the last spring frost (32°F) comes after March 21 in half of years and after April 9 in one year in ten; the first autumn frost comes before November 13 in half of years and before October 30 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 211 year in 10 after April 9; 9 in 10 after March 1
- First autumn frost, half of years before
- November 131 year in 10 before October 30; 9 in 10 before December 1
NOAA puts the median frost-free season at 235 days, and the season without a hard freeze (28°F) at 264 days.
A hard freeze (28°F) comes after March 7 in half of springs and before November 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Louisville in zone 8a in ZIP code 39339, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Louisville's NOAA station is in zone 8a: the coldest night of a typical year reaches 13°F (17 complete years).
Frost dates for every NOAA station in Mississippi · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00225247; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Louisville?
In a normal year in Louisville, 66 days a year reach 90°F (2 of them 100°F or more), 54 nights fall to 32°F or colder and 97 days bring measurable precipitation.
- Days at 90°F or more
- 66a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 54a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 97a normal year
The highest temperature in this station's record (since 1891) is 107°F, on July 29, 1930; the lowest is −13°F, on February 13, 1899.
The wettest calendar year on that record is 1983, with 89.27 in; the snowiest season is 1935–36, with 17.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00225247; records: ACIS (NOAA Regional Climate Centers), station USC00225247. Records use complete months only; a month missing more than three days is left out.
How sunny is Louisville?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Louisville, 4.5 kWh per square metre a day. June is the sunniest month (82%) and February the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.6 |
| February | 66% | 3.1 |
| March | 71% | 4.3 |
| April | 76% | 5.5 |
| May | 79% | 6.1 |
| June | 82% | 6.5 |
| July | 81% | 6.2 |
| August | 82% | 5.7 |
| September | 82% | 5.0 |
| October | 79% | 4.0 |
| November | 77% | 3.0 |
| December | 69% | 2.3 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Louisville need?
A normal year in Louisville brings 2,631 heating degree days, 51% fewer than the median U.S. place (5,373), and 2,114 cooling degree days, 2.3 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,655 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 639 | 2 |
| February | 479 | 3 |
| March | 307 | 18 |
| April | 131 | 70 |
| May | 22 | 222 |
| June | 0 | 396 |
| July | 0 | 497 |
| August | 0 | 480 |
| September | 7 | 311 |
| October | 112 | 98 |
| November | 358 | 13 |
| December | 578 | 4 |
| Year (annual) | 2,631 | 2,114 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00225247. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Louisville been warmer than normal lately?
Over 93 complete years from 1889 to 2017, the station's annual mean temperature rose at a fitted -0.2°F per century (−0.01°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Louisville's climate compare?
Louisville is warmer than 34 of the other 80 places with their own NOAA record in Mississippi, and wetter than 21. Across the 7,247 U.S. stations with normals, its annual mean of 63.5°F is warmer than 84%.
In the Köppen classification computed from these normals, Louisville is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Louisville share this climate record?
5 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Ackerman, MS1,544 people · 13 mi NW
- Weir, MS438 people · 15 mi NW
- Noxapater, MS379 people · 10 mi S
- Sturgis, MS204 people · 15 mi N
- McCool, MS104 people · 16 mi W
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Louisville's climate
What is the coldest month in Louisville?
January, with a normal high of 55°F and a normal low of 34°F. The warmest is July (92°F by day, 71°F at night).
What is the rainiest month in Louisville?
February, with 5.68 in of precipitation in a normal year; the driest is June with 3.95 in.
What plant hardiness zone is Louisville in?
The USDA's 2023 map puts Louisville in zone 8a in ZIP code 39339, the nearest ZIP area. By the same method at Louisville's NOAA station, the coldest night of a typical year reaches 13°F (17 years, 1991-2020): zone 8a.
How late can frost come in Louisville?
In half of years the last 32°F night comes after March 21; in one year in ten it comes after April 9. Waiting until April 9 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Mississippi climateThe statewide normals and every place in the state
- Philadelphia, MS25 miles from this station, 64.2°F a year
- Starkville, MS29 miles from this station, 63.6°F a year
- Macon, MS30 miles from this station, 62.7°F a year
- Kosciusko, MS30 miles from this station, 62.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made