Photo: Ichabod · CC BY-SA 3.0Savannah’s winters are colder but less snowy than most of the U.S.
A typical July afternoon reaches 87°, a January night drops to 18°, and about 21 inches of snow falls in a normal winter.
A year in Savannah at a glance
Each month’s typical high and low, and what it brings.
What stands out about Savannah’s climate
Compared with towns across the U.S., with Savannah’s place in Missouri beside it.
What a year in Savannah feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 184 frost-free days a year
In half of years the last 32° night comes by April 17 and the first by October 19. Frost and day counts come from NOAA’s station at Cosby 2w, MO, 9 miles from the town’s center, 170 ft lower.
The 2023 USDA map puts Savannah’s center in zone 6a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −9°. 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 21 inches of snow a winter
Snow, measured at Troy 3n, KS, is heaviest from January through February, about 6 inches a month. Precipitation (rain plus melted snow) adds up to 37 inches a year; July is the wettest month and January the driest. Rain or snow falls on about 101 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Savannah
83% of the work is heating. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Cosby 2w, MO.
Living with Savannah’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
184 frost-free days in zone 6a. The last frost comes by Apr 17 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 19.
Months with highs of 62–84° and lows of 40° or more: April, May, June, September and October. 5.4 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Savannah from natural hazards, tornadoes are the largest share (37%); heat waves, cold waves, winter storms and ice storms together are 25%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Savannah and similar climates
TownRatings has no climate map of the towns around Savannah yet.
Climates most like Savannah’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 |
|---|---|---|---|---|
| Savannah, MO | 18° | 87° | 37" | 21" |
| Chillicothe, IL | 16° | 86° | 37" | 20" |
| Keokuk, IA | 18° | 86° | 40" | 23" |
| Napoleon, OH | 19° | 85° | 36" | 25" |
| Lock Haven, PA | 19° | 86° | 41" | 30" |
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 Savannah averaged 0.6° warmer than the 1900s. The biggest change is in March (+2.1°).
A smaller shift than in 96% 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 Savannah compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Savannah’s place among Missouri’s.
Savannah weather by month
Highs, lows and precipitation from NOAA’s grid at Savannah’s center; snow, wet days and snow on the ground from Troy 3n, KS. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 36° | 18° | 0.9" | 5.5" | 7 | 11 | 20° – 39° |
| February | 41° | 22° | 1.3" | 5.9" | 6 | 8 | 22° – 41° |
| March | 53° | 32° | 2.2" | 2.2" | 9 | 3 | 36° – 58° |
| April | 64° | 42° | 3.7" | 0.8" | 11 | 0 | 45° – 59° |
| May | 74° | 53° | 5.0" | 0.1" | 12 | 0 | 58° – 72° |
| June | 83° | 63° | 4.8" | 0.0" | 10 | 0 | 69° – 77° |
| July | 87° | 67° | 5.2" | 0.0" | 9 | 0 | 72° – 83° |
| August | 85° | 64° | 4.1" | 0.0" | 9 | 0 | 69° – 80° |
| September | 78° | 56° | 3.7" | 0.0" | 8 | 0 | 61° – 72° |
| October | 66° | 44° | 3.0" | 0.3" | 8 | 0 | 48° – 59° |
| November | 52° | 32° | 2.0" | 1.3" | 6 | 1 | 33° – 51° |
| December | 40° | 22° | 1.5" | 5.0" | 6 | 7 | 17° – 38° |
| Year | 63° | 43° | 37.3" | 21.1" | 101 | 30 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 36° to 58°. June is the most reliable, staying within 8°.
Where Savannah’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 Savannah’s center.
- Snow: Troy 3n, KS.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Cosby 2w, MO, 9 miles from the town’s center, 170 ft lower; 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 Savannah’s climate
What is the weather like in Savannah?
A typical July afternoon reaches 87°, a January night drops to 18°, and about 21 inches of snow falls in a normal winter. Colder January nights than 71% of U.S. towns; hotter July afternoons than 60% of U.S. towns.
How cold does it get in Savannah in winter?
January nights average 18°. About 130 nights a year reach 32° or below and 9 reach 0° or below. In the coldest January of the last 30 years the month averaged 20°.
How much snow does Savannah get?
About 21 inches in a normal winter at Troy 3n, KS, heaviest from January through February, about 6 inches a month, with snow on the ground about 30 days a year.
How hot does it get in Savannah?
July, with a typical high of 87° and a low of 67°. About 33 days a year reach 90° and 2 reach 100° (Cosby 2w, MO).
When is the first and last frost in Savannah?
In half of years the last spring frost (32°) comes by April 17 and the first fall frost by October 19, about 184 frost-free days, at Cosby 2w, MO.
What growing zone is Savannah in?
Zone 6a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −9°.
What is the best time of year to visit Savannah?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Savannah getting warmer?
Yes: 1991–2020 averaged 0.6° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 96% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Savannah.
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.