Dunwoody has mild winters and warm summers, with plenty of rain
A typical July afternoon reaches 89°, a January night drops to 33°, and snow is almost unheard of.
A year in Dunwoody at a glance
Each month’s typical high and low, and what it brings.
What stands out about Dunwoody’s climate
Read from where Dunwoody sits among Georgia’s towns. The page puts what stands out first.
What a year in Dunwoody feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
Rain and snow in Dunwoody
March is the wettest month and October the driest. Rain or snow falls on about 120 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
About 0.6" in a normal year, so most winters see none.
Warmer than it used to be
The last 30 years in Dunwoody averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.4°).
A smaller shift than in 65% of U.S. towns.
Change by month
About 228 frost-free days a year
In half of years the last 32° night comes by March 25 and the first by November 9.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Dunwoody’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
228 frost-free days. The last frost comes by Mar 25 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 9.
About 0.6" in a normal winter.
Months averaging under 55° run from November through March. Heating is 63% of the year’s heating-and-cooling load.
About 53 days a year reach 90°, and July afternoons average 89°.
The nicest months are March, April, May, September, October and November. 0.3 miles of trails are waiting.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Dunwoody and its neighbors
Peachtree Corners has the coldest January nights next door (32°) and Brookhaven the hottest July afternoons (89°). Tap a town to see its climate.
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
How Dunwoody compares
Against every U.S. town on TownTapestry, each counted once, with its place in Georgia.
Dunwoody weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 52° | 33° | 4.8" | 0.1" | 11 | 0 | 35° – 49° |
| February | 56° | 35° | 4.8" | 0.2" | 11 | 0 | 38° – 55° |
| March | 65° | 41° | 5.0" | 0.3" | 11 | 0 | 47° – 62° |
| April | 73° | 48° | 4.1" | 0 | 9 | 0 | 56° – 65° |
| May | 80° | 57° | 3.9" | 0 | 11 | 0 | 63° – 73° |
| June | 86° | 65° | 4.5" | 0 | 11 | 0 | 71° – 79° |
| July | 89° | 69° | 4.9" | 0 | 12 | 0 | 76° – 82° |
| August | 88° | 68° | 4.4" | 0 | 10 | 0 | 74° – 83° |
| September | 83° | 62° | 4.2" | 0 | 8 | 0 | 69° – 79° |
| October | 73° | 51° | 3.6" | 0 | 8 | 0 | 59° – 66° |
| November | 63° | 40° | 4.2" | 0 | 9 | 0 | 46° – 57° |
| December | 54° | 35° | 4.7" | 0 | 11 | 0 | 36° – 55° |
| Year | 72° | 50° | 53.0" | 0.6" | 120 | 0 |
Heating and cooling a home in Dunwoody
63% of the work is heating.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 36° to 55°. July is the most reliable, staying within 6°.
Common questions about Dunwoody’s climate
What is the coldest month in Dunwoody?
January, with a typical high of 52° and a low of 33°.
What is the hottest month in Dunwoody?
July, with a typical high of 89° and a low of 69°. About 53 days a year reach 90°.
How much snow does Dunwoody get?
Almost none. A normal year brings 0.6 inches.
When is the first frost in Dunwoody?
In half of years the first 32° night comes by November 9, and the last spring frost by March 25.
What is the rainiest month in Dunwoody?
March, with 5.0 inches of rain and melted snow. The year totals 53 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Dunwoody.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Dunwoody itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Cumming 2n, GA (22 mi, snow) and Atlanta Peachtree Airport, GA (5 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.