More precipitation falls on Candlewood Isle than on 79% of U.S. towns: 49 inches a year
The warmest part of a July day comes in at 84° on average. In January, nights here are colder than in 71% of U.S. towns. Decade by decade the climate has edged up, 1.7° above 1901–2000. Homes need heating from November to April, the months averaging under 50°.
A year in Candlewood Isle at a glance
Each month’s typical high and low, and what it brings.
What stands out about Candlewood Isle’s climate
Compared with towns across the U.S., with Candlewood Isle’s place in Connecticut beside it.
What a year in Candlewood Isle feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 181 frost-free days a year
In half of years the last 32° night comes by April 20 and the first by October 20. Frost and day counts come from NOAA’s station at Danbury, CT, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Candlewood Isle’s center in zone 6b: 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 49 inches of snow a winter
Snow, measured at Danbury, CT, falls mostly in January. Precipitation (rain plus melted snow) adds up to 49 inches a year; October is the wettest month and February the driest. Rain or snow falls on about 134 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Candlewood Isle
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 Danbury, CT.
Living with Candlewood Isle’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
181 frost-free days in zone 6b. The last frost comes by Apr 20 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 20.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Candlewood Isle from natural hazards, river flooding is the largest share (73%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Candlewood Isle and similar climates
TownRatings has no climate map of the towns around Candlewood Isle yet.
Climates most like Candlewood Isle’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 |
|---|---|---|---|---|
| Candlewood Isle, CT | 18° | 84° | 49" | 49" |
| Latrobe, PA | 21° | 84° | 47" | 48" |
| Haverhill, MA | 17° | 83° | 46" | 58" |
| Plaistow, NH | 16° | 83° | 47" | 58" |
| Buckhannon, WV | 23° | 83° | 50" | 39" |
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 Candlewood Isle averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.2°).
A bigger shift than in 73% 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 Candlewood Isle compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Candlewood Isle’s place among Connecticut’s.
Candlewood Isle weather by month
Highs, lows and precipitation from NOAA’s grid at Candlewood Isle’s center; snow, wet days and snow on the ground from Danbury, CT. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 36° | 18° | 3.4" | 15.7" | 12 | 15 | 17° – 34° |
| February | 39° | 19° | 2.9" | 11.0" | 11 | 13 | 16° – 35° |
| March | 47° | 27° | 4.0" | 10.4" | 12 | 8 | 31° – 47° |
| April | 60° | 37° | 4.0" | 1.7" | 12 | 0 | 43° – 52° |
| May | 71° | 47° | 3.9" | 0.0" | 13 | 0 | 54° – 64° |
| June | 79° | 56° | 4.4" | 0.0" | 12 | 0 | 65° – 71° |
| July | 84° | 62° | 4.6" | 0.0" | 11 | 0 | 68° – 77° |
| August | 82° | 60° | 4.4" | 0.0" | 10 | 0 | 67° – 74° |
| September | 74° | 53° | 4.5" | 0.0" | 10 | 0 | 60° – 68° |
| October | 63° | 41° | 4.7" | 0.0" | 10 | 0 | 48° – 59° |
| November | 51° | 32° | 3.8" | 1.9" | 10 | 1 | 37° – 46° |
| December | 41° | 24° | 4.1" | 8.6" | 12 | 9 | 25° – 44° |
| Year | 60° | 40° | 48.7" | 49.3" | 134 | 46 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 16° to 35°. June is the most reliable, staying within 6°.
Where Candlewood Isle’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 Candlewood Isle’s center.
- Snow: Danbury, CT.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Danbury, CT, 6 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 Candlewood Isle’s climate
What is the weather like in Candlewood Isle?
A typical July afternoon reaches 84°, a January night drops to 18°, and about 49 inches of snow falls in a normal winter. Colder January nights than 71% of U.S. towns; cooler July afternoons than 62% of U.S. towns.
How cold does it get in Candlewood Isle in winter?
January nights average 18°. About 126 nights a year reach 32° or below and 2 reach 0° or below. In the coldest January of the last 30 years the month averaged 17°.
How much snow does Candlewood Isle get?
About 49 inches in a normal winter at Danbury, CT, most of it in January, with snow on the ground about 46 days a year.
How hot does it get in Candlewood Isle?
July, with a typical high of 84° and a low of 62°. About 20 days a year reach 90° (Danbury, CT).
When is the first and last frost in Candlewood Isle?
In half of years the last spring frost (32°) comes by April 20 and the first fall frost by October 20, about 181 frost-free days, at Danbury, CT.
What growing zone is Candlewood Isle in?
Zone 6b 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 Candlewood Isle?
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 Candlewood Isle getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 73% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Candlewood Isle.
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.