Saint Mark's Church · Photo: Gilbert Ask · Public domainDeWitt gets about 128 inches of snow a winter, more than all but 100 U.S. towns
A typical July afternoon reaches 82°, a January night drops to 15°, and about 128 inches of snow falls in a normal winter.
A year in DeWitt at a glance
Each month’s typical high and low, and what it brings.
What stands out about DeWitt’s climate
Compared with towns across the U.S., with DeWitt’s place in New York beside it.
What a year in DeWitt feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 173 frost-free days a year
In half of years the last 32° night comes by April 29 and the first by October 19. Frost and day counts come from NOAA’s station at Syracuse Hancock International Airport, 4 miles from the town’s center, at about the same height.
The 2023 USDA map puts DeWitt’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 128 inches of snow a winter
Snow, measured at Syracuse Hancock International Airport, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 41 inches a year; October is the wettest month and February the driest. Rain or snow falls on about 174 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in DeWitt
91% of the work is heating, so the furnace matters far more than the air conditioner. 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 Syracuse Hancock International Airport.
Living with DeWitt’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
173 frost-free days in zone 6a. The last frost comes by Apr 29 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: May, June, July, August and September. 27 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in DeWitt from natural hazards, river flooding is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 7%. Normals are averages; the hazards page covers the extremes.
Natural hazards →DeWitt and its neighbors
LaFayette has the coldest January nights next door (14°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like DeWitt’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 |
|---|---|---|---|---|
| DeWitt, NY | 15° | 82° | 41" | 128" |
| Pepper Pike, OH | 19° | 82° | 42" | 114" |
| Westwood, MI | 17° | 83° | 38" | 109" |
| Edinboro, PA | 18° | 81° | 47" | 114" |
| Jericho, VT | 9° | 79° | 43" | 139" |
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.
Warmer than it used to be
The last 30 years in DeWitt averaged 1.3° warmer than the 1900s. The biggest change is in December (+2.7°).
A smaller shift than in 57% 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 DeWitt compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with DeWitt’s place among New York’s.
DeWitt weather by month
Highs, lows and precipitation from NOAA’s grid at DeWitt’s center; snow, wet days and snow on the ground from Syracuse Hancock International Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 31° | 15° | 2.7" | 34.0" | 19 | 23 | 12° – 32° |
| February | 33° | 16° | 2.4" | 30.3" | 17 | 22 | 10° – 33° |
| March | 42° | 24° | 2.9" | 19.8" | 16 | 15 | 25° – 45° |
| April | 56° | 35° | 3.5" | 3.0" | 15 | 1 | 39° – 51° |
| May | 69° | 46° | 3.6" | 0.1" | 13 | 0 | 51° – 63° |
| June | 77° | 55° | 4.0" | 0.0" | 12 | 0 | 63° – 72° |
| July | 82° | 60° | 3.9" | 0.0" | 12 | 0 | 66° – 76° |
| August | 80° | 59° | 3.7" | 0.0" | 11 | 0 | 66° – 73° |
| September | 73° | 51° | 3.6" | 0.0" | 11 | 0 | 58° – 67° |
| October | 60° | 41° | 4.2" | 0.2" | 15 | 0 | 45° – 57° |
| November | 48° | 32° | 3.2" | 9.8" | 16 | 4 | 34° – 46° |
| December | 37° | 23° | 3.2" | 30.6" | 19 | 15 | 21° – 41° |
| Year | 57° | 38° | 40.9" | 127.8" | 174 | 80 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 10° to 33°. August is the most reliable, staying within 7°.
Where DeWitt’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 DeWitt’s center.
- Snow: Syracuse Hancock International Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Syracuse Hancock International Airport, 4 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 DeWitt’s climate
What is the weather like in DeWitt?
A typical July afternoon reaches 82°, a January night drops to 15°, and about 128 inches of snow falls in a normal winter. Colder January nights than 83% of U.S. towns; cooler July afternoons than 83% of U.S. towns.
How cold does it get in DeWitt in winter?
January nights average 15°. About 133 nights a year reach 32° or below and 8 reach 0° or below. In the coldest January of the last 30 years the month averaged 12°.
How much snow does DeWitt get?
About 128 inches in a normal winter at Syracuse Hancock International Airport, most of it in January and December, with snow on the ground about 80 days a year.
How hot does it get in DeWitt?
July, with a typical high of 82° and a low of 60°. About 10 days a year reach 90° (Syracuse Hancock International Airport).
When is the first and last frost in DeWitt?
In half of years the last spring frost (32°) comes by April 29 and the first fall frost by October 19, about 173 frost-free days, at Syracuse Hancock International Airport.
What growing zone is DeWitt 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 DeWitt?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is DeWitt getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 57% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in DeWitt.
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.