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Blue Hills, CT Weather
Blue Hills, Connecticut sits at 41.8134, -72.6954. Its warmest month is July, when the day usually reaches 85F, and its coldest is January, when the night usually falls to 20F. May is the wettest, with rain on about 13 days. The hottest day in the record is 103F on August 9, 2001, and the coldest night -24F on February 16, 1943. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Blue Hills weather
Blue Hills sits at 41.8134, -72.6954 and covers about 1.2 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts, in one place, so they stay current instead of going stale on three hundred town pages.
Where these numbers come from
Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
Water and tides:NOAA and USGS gauges where one is near.
What the weather is usually like in Blue Hills
Blue Hills is warmest in July, when the day usually reaches 85F, and coldest in January, when the night usually falls to 20F. May is the wettest month, with rain on about 13 days of it.
Usual high and low, by month
Days with rain, by month
The same year as numbers
Month
Usual high
Usual low
Rain days
Snow days
January
37F
20F
10
0
February
40F
22F
9
0
March
48F
29F
10
0
April
60F
39F
11
0
May
71F
49F
13
0
June
80F
59F
11
0
July
85F
65F
11
0
August
83F
64F
10
0
September
76F
56F
10
0
October
64F
44F
11
0
November
52F
34F
10
0
December
42F
26F
11
0
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Hartford Brainard Fld station 5.9 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Blue Hills weather history, back to 1940
Pick any month back to 1940 and see what actually happened in Blue Hills. Reanalysis fitted to observations, not a forecast.
Reading this month last year to start you off.
Blue Hills weather records
In 135,852 days of observations Blue Hills has been as hot as 103F and as cold as -24F. Not averages: the actual days.
Hottest day
103F
August 9, 2001
Coldest night
-24F
February 16, 1943
Wettest day
6.10 in
September 20, 1938
Biggest snow
24.0 in
January 12, 2011
NOAA GHCN daily station records, observed 1920 to 2025: temperature at the Hartford Brainard Fld station, 5.9 miles away; snowfall at the Hartford-Bradley Intl Ap station, 8.6 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Blue Hills weather
Common questions
What is the weather usually like in Blue Hills, CT?
Blue Hills is warmest in July, when the day usually reaches 85F, and coldest in January, when the night usually falls to 20F. Rain falls on roughly 127 days a year, most often in May. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Blue Hills, CT?
About 127 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. May is the wettest month with rain on about 13 of its days, and February the driest with about 9.
What is the hottest it has ever been in Blue Hills, CT?
The hottest day measured at the station serving Blue Hills reached 103F on August 9, 2001, and the coldest night -24F on February 16, 1943. Both are real NOAA station measurements from the GHCN daily archive, observed 1920 to 2025, at the Hartford Brainard Fld station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Blue Hills, CT?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Blue Hills forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.