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Climate in Rock Ridge · NOAA 1991–2020 normals

No extremes in Rock Ridge: its weather tracks the middle of U.S. towns

On a normal July day the thermometer tops out near 85°. It is a wet place: more rain and snow fall here than on 70% of U.S. towns. Warming shows here too: 2.2° more than in 1901–2000, led by December. Radiators earn their keep from November to March, the months that average under 50°.

More snow than 68% of U.S. towns#141Snowiest  of 201 in CT
Milder January nights than 62% of U.S. towns#1Mildest winters  of 208 in CT
All CT rankings →

A year in Rock Ridge at a glance

Each month’s typical high and low, and what it brings.

Jan40°25° 9" snow
Feb42°26° 12" snow
Mar49°32° 6" snow
Apr61°42° Last frost ~Apr 12
May71°51°
Jun80°61° 2 days 90°+
Jul85°67° 5 days 90°+
Aug83°66° 2 days 90°+
Sep76°59° 1 day 90°+Wettest
Oct65°48° First frost ~Oct 31
Nov now54°38°
Dec44°30° 6" snow

What stands out about Rock Ridge’s climate

Compared with towns across the U.S., with Rock Ridge’s place in Connecticut beside it.

A normal year

What a year in Rock Ridge feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
42° / 27°
10 days with 1"+ of snow
Spring
60° / 42°
Last frost around Apr 12
Summer
83° / 65°
10 days reach 90°
Fall
65° / 48°
First frost around Oct 31
Best months to be outsideMayJunAugSepOctHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 200 frost-free days a year

In half of years the last 32° night comes by April 12 and the first by October 31. Frost and day counts come from NOAA’s station at Westchester Co Airport, 4 miles from the town’s center, 240 ft higher.

105
nights at or below 32° in a normal year
35th fewest of 208 in Connecticut
Fewer freezing nights than 58% of U.S. towns
<1
nights at or below 0°
30th fewest of 208 in Connecticut
Fewer nights at or below 0° than 58% of U.S. towns
10
days that reach 90°
85th fewest of 208 in Connecticut
Fewer 90° days than 76% of U.S. towns
<1
days that reach 100°
64th fewest of 208 in Connecticut
Fewer 100° days than 68% of U.S. towns
7aUSDA zone
Plant hardiness zone 7a

The 2023 USDA map puts Rock Ridge’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 5°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

26
JFMAMJJASOND

90° days by month

Average days at 90° or more

4.7
JFMAMJJASOND
Rain & snow

About 34 inches of snow a winter

Snow, measured at Stamford 5 N, CT, falls mostly in February. Precipitation (rain plus melted snow) adds up to 47 inches a year; September is the wettest month and February the driest. Rain or snow falls on about 124 days a year.

47"
Rain + melted snow a year
158th wettest of 208 in Connecticut
Wetter than 70% of U.S. towns
34"
Snow in a normal winter
141st snowiest of 201 in Connecticut
More snow than 68% of U.S. towns

Rain + melted snow by month

Inches of water

4.5"
JFMAMJJASOND

Snowfall by month

Inches of snow

12"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in Rock Ridge

87% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from November through April.

5,492 heating degree daysMore heating than 54% of U.S. towns
787 cooling degree daysLess cooling than 62% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Westchester Co Airport.

Living here

Living with Rock Ridge’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

200 frost-free days in zone 7a. The last frost comes by Apr 12 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 31.

Get outside

Months with highs of 62–84° and lows of 40° or more: May, June, August, September and October. 0.0 miles of trails are waiting.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in Rock Ridge from natural hazards, river flooding is the largest share (68%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door

Rock Ridge and its neighbors

Every town next door is within a degree of Rock Ridge in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.

Port Chester: January low 24°, July high 85°Rye: January low 24°, July high 85°Greenwich: January low 23°, July high 85°Byram: January low 25°, July high 85°Rye Brook: January low 24°, July high 85°Pemberwick: January low 25°, July high 85°Glenville: January low 25°, July high 85°Rock Ridge: January low 25°, July high 85°Rock RidgePemberwickGlenville
ColderMilder23° to 25°
Rock Ridge24.6°
Pemberwick24.6° about the same
Glenville24.6° about the same

Climates most like Rock Ridge’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.

TownJan. lowJuly highPrecip.Snow
Rock Ridge, CT25°85°47"34"
Mount Airy, MD24°85°46"31"
New Martinsville, WV22°85°46"27"
New Freedom, PA21°84°48"29"
Union, KY23°85°47"23"

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.

Then and now

Warmer than it used to be

The last 30 years in Rock Ridge averaged 2.2° warmer than the 1900s. The biggest change is in December (+3.7°).

+2.2°1991–2020 vs. 1901–2000

A bigger shift than in 95% of U.S. towns.

Winter+3.1°now 34°, was 31°
Spring+1.9°now 51°, was 49°
Summer+2.0°now 74°, was 72°
Fall+1.8°now 57°, was 55°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.

Compared with other towns

How Rock Ridge compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Rock Ridge’s place among Connecticut’s.

Summer heat85° July high
Cooler July afternoons than 51% of U.S. towns189th coolest of 208 in Connecticut
Winter cold25° January low
Milder January nights than 62% of U.S. townsThe mildest of 208 in Connecticut
Precipitation47" a year
Wetter than 70% of U.S. towns158th wettest of 208 in Connecticut
Snow34" a winter
More snow than 68% of U.S. towns141st snowiest of 201 in Connecticut
Hot days10 days at 90°+
Fewer 90° days than 76% of U.S. towns85th fewest of 208 in Connecticut
Freezing nights105 a year
Fewer freezing nights than 58% of U.S. towns35th fewest of 208 in Connecticut
Growing season200 frost-free days
A longer frost-free season than 67% of U.S. towns25th longest of 208 in Connecticut
Month by month

Rock Ridge weather by month

Highs, lows and precipitation from NOAA’s grid at Rock Ridge’s center; snow, wet days and snow on the ground from Stamford 5 N, CT. 1991–2020 normals.

MonthHighLowRain + meltSnowWet days30-yr range
January40°25°3.3"9.1"1124° – 39°
February42°26°2.8"11.9"821° – 40°
March49°32°4.0"5.9"1035° – 49°
April61°42°4.1"0.5"1247° – 56°
May71°51°3.8"0.0"1257° – 66°
June80°61°4.3"0.0"1267° – 73°
July85°67°4.3"0.0"971° – 79°
August83°66°4.1"0.0"971° – 78°
September76°59°4.5"0.0"965° – 72°
October65°48°4.4"0.0"1052° – 64°
November54°38°3.5"0.8"1041° – 51°
December44°30°4.0"5.8"1130° – 49°
Year62°45°47.0"34.0"124
Year to year

How much a month can swing

A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 21° to 40°. June is the most reliable, staying within 6°.

Coldest to warmest month in 30 yearsNormal
Sources

Where Rock Ridge’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 Rock Ridge’s center.
  • Snow: Stamford 5 N, CT.
  • Frost, freezing nights, 90° and 100° days, heating and cooling: Westchester Co Airport, 4 miles from the town’s center, 240 ft higher; 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 Rock Ridge’s climate

What is the weather like in Rock Ridge?

A typical July afternoon reaches 85°, a January night drops to 25°, and about 34 inches of snow falls in a normal winter. Milder January nights than 62% of U.S. towns; cooler July afternoons than 51% of U.S. towns.

How cold does it get in Rock Ridge in winter?

January nights average 25°. About 105 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 24°.

How much snow does Rock Ridge get?

About 34 inches in a normal winter at Stamford 5 N, CT, most of it in February.

How hot does it get in Rock Ridge?

July, with a typical high of 85° and a low of 67°. About 10 days a year reach 90° (Westchester Co Airport).

When is the first and last frost in Rock Ridge?

In half of years the last spring frost (32°) comes by April 12 and the first fall frost by October 31, about 200 frost-free days, at Westchester Co Airport.

What growing zone is Rock Ridge in?

Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 5°.

What is the best time of year to visit Rock Ridge?

By one simple rule (highs of 62–84° and lows of 40° or more), May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.

Is Rock Ridge getting warmer?

Yes: 1991–2020 averaged 2.2° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 95% of U.S. towns.

Neighbors talk weather

Gardens, snow, and the best days of the year in Rock Ridge.

Town Square →
Ask your neighbors

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.