Photo: Bernardgeorgeh · CC BY-SA 4.0More precipitation falls on Oak Grove than on 90% of U.S. towns: 53 inches a year
The warmest part of a July day comes in at 89° on average. The wettest month is May; the driest is September. Its July heat outdoes that of 72% of U.S. towns. The heating season runs November to March: each of those months averages under 50°.
A year in Oak Grove at a glance
Each month’s typical high and low, and what it brings.
What stands out about Oak Grove’s climate
Compared with towns across the U.S., with Oak Grove’s place in Kentucky beside it.
What a year in Oak Grove feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 204 frost-free days a year
In half of years the last 32° night comes by April 6 and the first by October 28. Frost and day counts come from NOAA’s station at Clarksville Outlaw Airport, 3 miles from the town’s center, at about the same height.
The 2023 USDA map puts Oak Grove’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 5°. 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 53 inches of rain a year
May is the wettest month and September the driest. Rain falls on about 130 days a year. Snow is rare: about 0.5" in a normal year at Clarksville Wwtp, TN, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Oak Grove
72% 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 Clarksville Outlaw Airport.
Living with Oak Grove’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
204 frost-free days in zone 7a. The last frost comes by Apr 6 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 28.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Oak Grove from natural hazards, river flooding is the largest share (47%); heat waves, cold waves, winter storms and ice storms together are 11%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Oak Grove and similar climates
TownRatings has no climate map of the towns around Oak Grove yet.
Climates most like Oak Grove’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 |
|---|---|---|---|---|
| Oak Grove, KY | 27° | 89° | 53" | 0.5" |
| Cleveland, TN | 30° | 89° | 56" | 1.1" |
| Walnut Ridge, AR | 28° | 90° | 49" | 0.9" |
| Temple, GA | 31° | 88° | 54" | 0.6" |
| Williamston, NC | 32° | 89° | 51" | 0.5" |
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 Oak Grove averaged 0.9° warmer than the 1900s. The biggest change is in February (+1.7°).
A smaller shift than in 84% 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 Oak Grove compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Oak Grove’s place among Kentucky’s.
Oak Grove weather by month
Highs, lows and precipitation from NOAA’s grid at Oak Grove’s center; snow, wet days and snow on the ground from Clarksville Wwtp, TN. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 46° | 27° | 3.8" | 0.3" | 12 | 0 | 30° – 45° |
| February | 51° | 30° | 4.4" | 0.1" | 11 | 0 | 29° – 48° |
| March | 60° | 38° | 4.8" | 0.1" | 12 | 0 | 42° – 60° |
| April | 71° | 46° | 5.1" | 0.0" | 12 | 0 | 52° – 63° |
| May | 78° | 56° | 5.3" | 0.0" | 12 | 0 | 62° – 74° |
| June | 85° | 65° | 4.6" | 0.0" | 11 | 0 | 70° – 79° |
| July | 89° | 68° | 4.6" | 0.0" | 10 | 0 | 74° – 82° |
| August | 88° | 67° | 3.7" | 0.0" | 9 | 0 | 72° – 85° |
| September | 82° | 59° | 3.4" | 0.0" | 9 | 0 | 67° – 78° |
| October | 71° | 47° | 3.9" | 0.0" | 9 | 0 | 55° – 65° |
| November | 59° | 37° | 4.0" | 0.0" | 11 | 0 | 42° – 53° |
| December | 49° | 31° | 4.8" | 0.0" | 12 | 0 | 28° – 50° |
| Year | 69° | 48° | 52.5" | 0.5" | 130 | 0 |
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 50°. July is the most reliable, staying within 9°.
Where Oak Grove’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 Oak Grove’s center.
- Snow: Clarksville Wwtp, TN.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Clarksville Outlaw Airport, 3 miles from the town’s center, at about the same height; 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 Oak Grove’s climate
What is the weather like in Oak Grove?
A typical July afternoon reaches 89°, a January night drops to 27°, and snow is almost unheard of. Milder January nights than 69% of U.S. towns; hotter July afternoons than 72% of U.S. towns.
How cold does it get in Oak Grove in winter?
January nights average 27°. About 80 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 30°.
How much snow does Oak Grove get?
About 0.5 inches in a normal winter at Clarksville Wwtp, TN, so most winters see none.
How hot does it get in Oak Grove?
July, with a typical high of 89° and a low of 68°. About 43 days a year reach 90° and 1 reach 100° (Clarksville Outlaw Airport).
When is the first and last frost in Oak Grove?
In half of years the last spring frost (32°) comes by April 6 and the first fall frost by October 28, about 204 frost-free days, at Clarksville Outlaw Airport.
What growing zone is Oak Grove in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 5°.
What is the best time of year to visit Oak Grove?
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 Oak Grove getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 84% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Oak Grove.
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.