Photo: Nyttend · Public domainIn Louisa, July heat, January chill and rainfall all sit near the middle of U.S. towns
Midsummer highs settle at about 87°. Seasons differ by 63°, from the coldest nights to the warmest afternoons. It is a wet place: more rain and snow fall here than on 68% of U.S. towns. Central heating does most of its work from November to March, in months below 50° on average.
A year in Louisa at a glance
Each month’s typical high and low, and what it brings.
What stands out about Louisa’s climate
Compared with towns across the U.S., with Louisa’s place in Kentucky beside it.
What a year in Louisa feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 174 frost-free days a year
In half of years the last 32° night comes by April 24 and the first by October 17. Frost and day counts come from NOAA’s station at Charley 2 Sw, KY, 13 miles from the town’s center, 130 ft higher.
The 2023 USDA map puts Louisa’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 0°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 20 inches of snow a winter
Snow, measured at Huntington Tri State Airport, is heaviest from January through February, about 6 inches a month. Precipitation (rain plus melted snow) adds up to 47 inches a year; July is the wettest month and November the driest. Rain or snow falls on about 142 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Louisa
85% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Charley 2 Sw, KY.
Living with Louisa’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
174 frost-free days in zone 7a. The last frost comes by Apr 24 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 17.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 0.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Louisa from natural hazards, river flooding is the largest share (85%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Louisa and similar climates
TownRatings has no climate map of the towns around Louisa yet.
Climates most like Louisa’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Louisa, KY | 25° | 87° | 47" | 20" |
| Croydon, PA | 25° | 87° | 47" | 20" |
| Elsmere, DE | 25° | 87° | 47" | 20" |
| Ilchester, MD | 25° | 88° | 47" | 19" |
| Palmyra, NJ | 25° | 88° | 47" | 22" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Louisa averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.0°).
A smaller shift than in 75% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Louisa compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Louisa’s place among Kentucky’s.
Louisa weather by month
Highs, lows and precipitation from NOAA’s grid at Louisa’s center; snow, wet days and snow on the ground from Huntington Tri State Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 45° | 25° | 3.5" | 6.0" | 13 | 5 | 26° – 43° |
| February | 49° | 27° | 3.4" | 5.8" | 12 | 4 | 26° – 46° |
| March | 58° | 34° | 4.3" | 4.3" | 14 | 2 | 39° – 57° |
| April | 70° | 43° | 4.0" | 0.3" | 13 | 0 | 50° – 62° |
| May | 78° | 52° | 4.8" | 0.0" | 14 | 0 | 58° – 72° |
| June | 85° | 60° | 4.4" | 0.0" | 13 | 0 | 68° – 76° |
| July | 87° | 65° | 5.1" | 0.0" | 12 | 0 | 71° – 80° |
| August | 87° | 64° | 3.6" | 0.0" | 10 | 0 | 71° – 80° |
| September | 81° | 56° | 3.4" | 0.0" | 8 | 0 | 65° – 75° |
| October | 70° | 44° | 3.2" | 0.2" | 10 | 0 | 54° – 62° |
| November | 58° | 34° | 3.1" | 0.5" | 10 | 0 | 40° – 51° |
| December | 48° | 28° | 4.0" | 2.7" | 13 | 2 | 28° – 49° |
| Year | 68° | 44° | 46.7" | 19.8" | 142 | 13 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 28° to 49°. June is the most reliable, staying within 7°.
Where Louisa’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Louisa’s center.
- Snow: Huntington Tri State Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Charley 2 Sw, KY, 13 miles from the town’s center, 130 ft higher; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Louisa’s climate
What is the weather like in Louisa?
A typical July afternoon reaches 87°, a January night drops to 25°, and about 20 inches of snow falls in a normal winter. Milder January nights than 62% of U.S. towns; hotter July afternoons than 64% of U.S. towns.
How cold does it get in Louisa in winter?
January nights average 25°. About 127 nights a year reach 32° or below and 2 reach 0° or below. In the coldest January of the last 30 years the month averaged 26°.
How much snow does Louisa get?
About 20 inches in a normal winter at Huntington Tri State Airport, heaviest from January through February, about 6 inches a month, with snow on the ground about 13 days a year.
How hot does it get in Louisa?
July, with a typical high of 87° and a low of 65°. About 21 days a year reach 90° (Charley 2 Sw, KY).
When is the first and last frost in Louisa?
In half of years the last spring frost (32°) comes by April 24 and the first fall frost by October 17, about 174 frost-free days, at Charley 2 Sw, KY.
What growing zone is Louisa in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 0°.
What is the best time of year to visit Louisa?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Louisa getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 75% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Louisa.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.