Mount Carmel, Connecticut climate: Climate normals at a NOAA weather station
Mount Carmel's normal year runs from 20°F January nights to 85°F July afternoons, with 50.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 10.9°C, January lows of −7°C, July highs of 29°C, 1,280 mm of precipitation a year.
- NOAA stationMount Carmel
- Station IDUSC00065077
- Location41.41°N 72.90°W
- Elevation180 ft (55 m)
On October 23, the normal high in Mount Carmel is 62°F and the normal low 41°F, and the chance of measurable rain or snow is 30%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Mount Carmel.
- Jan 38° 20°
- Feb 41° 22°
- Mar 48° 28°
- Apr 61° 38°
- May 71° 48°
- Jun 79° 58°
- Jul 85° 64°
- Aug 84° 62°
- Sep 76° 55°
- Oct 64° 43°
- Nov 53° 34°
- Dec 42° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Mount Carmel each month?
July is the warmest month, with normal highs of 85°F; January the coldest, with normal lows of 20°F. The most precipitation falls in October (4.91 in), the least in February (3.46 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 20°F | 29.0°F | 3.60 | 10 | <1 | 27 | 9 h 30 min |
| February | 41°F | 22°F | 31.3°F | 3.46 | 9 | <1 | 24 | 10 h 40 min |
| March | 48°F | 28°F | 38.3°F | 4.43 | 10 | <1 | 22 | 11 h 50 min |
| April | 61°F | 38°F | 49.3°F | 4.66 | 12 | <1 | 6 | 13 h 20 min |
| May | 71°F | 48°F | 59.5°F | 3.68 | 11 | 1 | <1 | 14 h 30 min |
| June | 79°F | 58°F | 68.6°F | 4.90 | 10 | 2 | <1 | 15 h 10 min |
| July | 85°F | 64°F | 74.2°F | 3.81 | 10 | 6 | <1 | 14 h 50 min |
| August | 84°F | 62°F | 72.8°F | 3.77 | 9 | 4 | <1 | 13 h 50 min |
| September | 76°F | 55°F | 65.7°F | 4.33 | 9 | 1 | <1 | 12 h 30 min |
| October | 64°F | 43°F | 53.9°F | 4.91 | 9 | <1 | 4 | 11 h 10 min |
| November | 53°F | 34°F | 43.1°F | 4.35 | 9 | <1 | 16 | 9 h 50 min |
| December | 42°F | 27°F | 34.4°F | 4.51 | 11 | <1 | 24 | 9 h 10 min |
| Year (annual) | 62°F | 42°F | 51.7°F | 50.41 | 120 | 14 | 123 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −7°C | −1.7°C | 91 mm |
| February | 5°C | −6°C | −0.4°C | 88 mm |
| March | 9°C | −2°C | 3.5°C | 113 mm |
| April | 16°C | 3°C | 9.6°C | 118 mm |
| May | 22°C | 9°C | 15.3°C | 93 mm |
| June | 26°C | 14°C | 20.3°C | 124 mm |
| July | 29°C | 18°C | 23.4°C | 97 mm |
| August | 29°C | 17°C | 22.7°C | 96 mm |
| September | 25°C | 13°C | 18.7°C | 110 mm |
| October | 18°C | 6°C | 12.2°C | 125 mm |
| November | 11°C | 1°C | 6.2°C | 110 mm |
| December | 6°C | −3°C | 1.3°C | 115 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Bridgeport (21 miles away), gets 34 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00065077; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
Which months are mildest at Mount Carmel?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00065077.
When is the last frost at Mount Carmel?
In Mount Carmel, the last spring frost (32°F) comes after April 18 in half of years and after May 3 in one year in ten; the first autumn frost comes before October 26 in half of years and before October 11 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 181 year in 10 after May 3; 9 in 10 after April 5
- First autumn frost, half of years before
- October 261 year in 10 before October 11; 9 in 10 before November 9
NOAA puts the median frost-free season at 191 days, and the season without a hard freeze (28°F) at 214 days.
A hard freeze (28°F) comes after April 5 in half of springs and before November 6 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Mount Carmel in zone 6b in ZIP code 06518, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 6b: the coldest night of a typical year reaches −1°F (23 complete years).
Frost dates for every NOAA station in Connecticut · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00065077; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get at Mount Carmel?
In a normal year in Mount Carmel, 14 days a year reach 90°F, 123 nights fall to 32°F or colder and 120 days bring measurable precipitation.
- Days at 90°F or more
- 14a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 123a normal year
- Days that stay below freezing
- 20high of 32°F or less
- Days with 0.01 inch of precipitation
- 120a normal year
The highest temperature in this station's record (since 1936) is 104°F, on July 4, 1949; the lowest is −24°F, on February 16, 1943.
The wettest calendar year on that record is 1975, with 88.52 in; the snowiest season is 2002–03, with 71.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00065077; records: ACIS (NOAA Regional Climate Centers), station USC00065077. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Mount Carmel?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds at Mount Carmel, 3.9 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 1.9 |
| February | 70% | 2.7 |
| March | 69% | 3.7 |
| April | 71% | 4.9 |
| May | 70% | 5.5 |
| June | 74% | 5.9 |
| July | 79% | 6.0 |
| August | 79% | 5.3 |
| September | 78% | 4.4 |
| October | 71% | 2.9 |
| November | 72% | 2.1 |
| December | 67% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How many heating and cooling degree days does Mount Carmel record?
A normal year at Mount Carmel brings 5,642 heating degree days, 5% more than the median U.S. place (5,373), and 818 cooling degree days, 10% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,078 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,117 | 0 |
| February | 944 | 0 |
| March | 829 | 0 |
| April | 474 | 3 |
| May | 203 | 32 |
| June | 33 | 140 |
| July | 1 | 287 |
| August | 4 | 245 |
| September | 81 | 102 |
| October | 353 | 8 |
| November | 656 | 0 |
| December | 949 | 0 |
| Year (annual) | 5,642 | 818 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00065077. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Have recent years at Mount Carmel been warmer than normal?
2021 averaged 52.8°F, 1.1°F above the 1991-2020 normal of 51.7°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.8°F | +1.1°F | 53.05 |
Over 54 complete years from 1948 to 2021, the station's annual mean temperature rose at a fitted 5.8°F per century (+0.32°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00065077; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Mount Carmel's climate compare?
Mount Carmel is warmer than 9 of the 13 places with their own NOAA record in Connecticut, and wetter than 9. Across the 7,247 U.S. stations with normals, its annual mean of 51.7°F is warmer than 48%.
In the Köppen classification computed from these normals, Mount Carmel is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Mount Carmel share this climate record?
4 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Naugatuck, CT32,116 people · 10 mi NW
- North Haven, CT24,844 people · 3 mi SE
- Northford, CT6,161 people · 6 mi E
- Quinnipiac University, CT3,821 people · 1 mi NE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Mount Carmel's climate
What is the coldest month at Mount Carmel?
January, with a normal high of 38°F and a normal low of 20°F. The warmest is July (85°F by day, 64°F at night).
Does it snow at Mount Carmel?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Bridgeport (21 miles away), records 34 inches of snow in a normal year.
What is the rainiest month at Mount Carmel?
October, with 4.91 in of precipitation in a normal year; the driest is February with 3.46 in.
What plant hardiness zone is Mount Carmel in?
The USDA's 2023 map puts Mount Carmel in zone 6b in ZIP code 06518, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −1°F (23 years, 1991-2020): zone 6b.
How late can frost come at Mount Carmel?
In half of years the last 32°F night comes after April 18; in one year in ten it comes after May 3. Waiting until May 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Connecticut climateThe statewide normals and every place in the state
- Meriden, CT8 miles from this station, 50.7°F a year
- New Haven, CT10 miles from this station, 52.0°F a year
- Ansonia, CT11 miles from this station, 50.1°F a year
- Bridgeport, CT21 miles from this station, 53.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made