Photo: Jeff Bellinger · CC BY-SA 3.0Clinton’s winters are colder than most of the U.S.; July afternoons average 83°
A typical July afternoon reaches 83°, a January night drops to 21°.
A year in Clinton at a glance
Each month’s typical high and low, and what it brings.
What stands out about Clinton’s climate
Compared with towns across the U.S., with Clinton’s place in Connecticut beside it.
What a year in Clinton feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 221 frost-free days a year
In half of years the last 32° night comes by April 6 and the first by November 17. Frost and day counts come from NOAA’s station at Orient Pt Sp, NY, 18 miles from the town’s center, at about the same height.
The 2023 USDA map puts Clinton’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 3°. 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 47 inches of rain a year
October is the wettest month and February the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Clinton
87% 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 Orient Pt Sp, NY.
Living with Clinton’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
221 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 Nov 17.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October. 26 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Clinton from natural hazards, river flooding is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Clinton and its neighbors
Madison has the coldest January nights next door (20°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. 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.
Warmer than it used to be
The last 30 years in Clinton averaged 1.8° warmer than the 1900s. The biggest change is in December (+3.4°).
A bigger shift than in 81% 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 Clinton compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Clinton’s place among Connecticut’s.
Clinton weather by month
Highs, lows and precipitation from NOAA’s grid at Clinton’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 39° | 21° | 3.5" | 21° – 36° |
| February | 41° | 23° | 3.1" | 19° – 38° |
| March | 48° | 29° | 4.1" | 33° – 46° |
| April | 59° | 38° | 4.2" | 45° – 53° |
| May | 69° | 48° | 3.6" | 54° – 63° |
| June | 78° | 57° | 4.1" | 64° – 70° |
| July | 83° | 64° | 3.6" | 70° – 77° |
| August | 82° | 63° | 3.8" | 69° – 76° |
| September | 75° | 56° | 4.2" | 63° – 70° |
| October | 64° | 44° | 4.4" | 51° – 60° |
| November | 53° | 35° | 3.8" | 39° – 48° |
| December | 44° | 27° | 4.3" | 29° – 46° |
| Year | 61° | 42° | 46.7" |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 19° to 38°. June is the most reliable, staying within 6°.
Where Clinton’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 Clinton’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Orient Pt Sp, NY, 18 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 Clinton’s climate
What is the weather like in Clinton?
A typical July afternoon reaches 83°, a January night drops to 21°. Colder January nights than 52% of U.S. towns; cooler July afternoons than 70% of U.S. towns.
How cold does it get in Clinton in winter?
January nights average 21°. About 73 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 21°.
How hot does it get in Clinton?
July, with a typical high of 83° and a low of 64°. About 3 days a year reach 90° (Orient Pt Sp, NY).
When is the first and last frost in Clinton?
In half of years the last spring frost (32°) comes by April 6 and the first fall frost by November 17, about 221 frost-free days, at Orient Pt Sp, NY.
What growing zone is Clinton in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 3°.
What is the best time of year to visit Clinton?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Clinton getting warmer?
Yes: 1991–2020 averaged 1.8° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 81% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Clinton.
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.