Thomas E. Watson House · Photo: Michelle Zupan · CC BY-SA 4.0Afternoon heat in Thomson beats that of 82% of U.S. towns
January mornings start at about 35°. From frosty January to warm July, readings climb 56°. Winters are mild: January nights here are milder than in 80% of U.S. towns. Picnics, hikes and garden evenings come into their own from March to May and October to November, with highs of 66–83°.
A year in Thomson at a glance
Each month’s typical high and low, and what it brings.
What stands out about Thomson’s climate
Compared with towns across the U.S., with Thomson’s place in Georgia beside it.
What a year in Thomson feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 252 frost-free days a year
In half of years the last 32° night comes by March 14 and the first by November 17. Frost and day counts come from NOAA’s station at Thomson 1.5se, GA, 1.5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Thomson’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 17°. 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 46 inches of rain a year
March is the wettest month and October the driest. Rain falls on about 109 days a year. Snow is rare: about 0.5" in a normal year at Washington 2 Ese, GA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Thomson
56% of the work is heating. Months averaging under 55° run from November through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Thomson 1.5se, GA.
Living with Thomson’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
252 frost-free days in zone 8b. The last frost comes by Mar 14 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 17.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Thomson from natural hazards, river flooding is the largest share (34%); heat waves, cold waves, winter storms and ice storms together are 11%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Thomson and similar climates
TownRatings has no climate map of the towns around Thomson yet.
Climates most like Thomson’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 |
|---|---|---|---|---|
| Thomson, GA | 35° | 91° | 46" | 0.5" |
| Lumberton, NC | 34° | 91° | 48" | 1.2" |
| Hartsville, SC | 33° | 92° | 48" | 0.5" |
| Hidden Valley Lake, CA | 36° | 92° | 40" | 0.3" |
| Lindale, TX | 36° | 93° | 46" | 0.7" |
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 Thomson averaged 1.0° warmer than the 1900s. The biggest change is in December (+2.1°).
A smaller shift than in 78% 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 Thomson compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Thomson’s place among Georgia’s.
Thomson weather by month
Highs, lows and precipitation from NOAA’s grid at Thomson’s center; snow, wet days and snow on the ground from Washington 2 Ese, GA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 56° | 35° | 4.1" | 0.4" | 11 | 0 | 39° – 53° |
| February | 60° | 37° | 3.9" | 0.0" | 10 | 0 | 41° – 58° |
| March | 68° | 43° | 4.6" | 0.0" | 10 | 0 | 49° – 64° |
| April | 76° | 50° | 3.1" | 0.0" | 8 | 0 | 58° – 67° |
| May | 83° | 58° | 3.2" | 0.0" | 8 | 0 | 66° – 76° |
| June | 88° | 66° | 4.3" | 0.0" | 10 | 0 | 73° – 81° |
| July | 91° | 70° | 4.1" | 0.0" | 9 | 0 | 77° – 85° |
| August | 90° | 69° | 4.4" | 0.0" | 10 | 0 | 77° – 84° |
| September | 85° | 63° | 3.6" | 0.0" | 7 | 0 | 71° – 80° |
| October | 76° | 52° | 2.9" | 0.0" | 7 | 0 | 60° – 69° |
| November | 66° | 42° | 3.2" | 0.0" | 8 | 0 | 50° – 60° |
| December | 58° | 37° | 4.1" | 0.1" | 11 | 0 | 38° – 57° |
| Year | 75° | 52° | 45.5" | 0.5" | 109 | 0 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 38° to 57°. August is the most reliable, staying within 7°.
Where Thomson’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 Thomson’s center.
- Snow: Washington 2 Ese, GA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Thomson 1.5se, GA, 1.5 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 Thomson’s climate
What is the weather like in Thomson?
A typical July afternoon reaches 91°, a January night drops to 35°, and snow is almost unheard of. Milder January nights than 80% of U.S. towns; hotter July afternoons than 82% of U.S. towns.
How cold does it get in Thomson in winter?
January nights average 35°. About 30 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 39°.
How much snow does Thomson get?
About 0.5 inches in a normal winter at Washington 2 Ese, GA, so most winters see none.
How hot does it get in Thomson?
July, with a typical high of 91° and a low of 70°. About 79 days a year reach 90° (Thomson 1.5se, GA).
When is the first and last frost in Thomson?
In half of years the last spring frost (32°) comes by March 14 and the first fall frost by November 17, about 252 frost-free days, at Thomson 1.5se, GA.
What growing zone is Thomson in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 17°.
What is the best time of year to visit Thomson?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Thomson getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 78% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Thomson.
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.