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Constantia, NY Weather
Constantia, New York sits at 43.2588, -75.9637. Its warmest month is July, when the day usually reaches 81F, and its coldest is January, when the night usually falls to 11F. January is the wettest, with rain on about 17 days. The hottest day in the station record is 98F on August 30, 2022, and the coldest night -41F on February 11, 1979. 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 Constantia weather
Constantia sits at 43.2588, -75.9637 and covers about 56.766 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.
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.
Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
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.
What the weather is usually like in Constantia
Constantia is warmest in July, when the day usually reaches 81F, and coldest in January, when the night usually falls to 11F. January is the wettest month, with rain on about 17 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
28F
11F
17
14
February
31F
11F
14
12
March
40F
20F
14
8
April
54F
32F
13
2
May
68F
43F
13
0
June
76F
52F
12
0
July
81F
57F
11
0
August
79F
55F
11
0
September
73F
48F
11
0
October
60F
38F
15
0
November
47F
29F
14
5
December
35F
20F
17
11
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Camden station 7.9 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.
Constantia weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Constantia: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Constantia weather records
In 82,752 days of observations Constantia has been as hot as 98F and as cold as -41F. Not averages: the actual days.
Hottest day
98F
August 30, 2022
Coldest night
-41F
February 11, 1979
Wettest day
5.37 in
June 22, 1972
Biggest snow
50.0 in
February 1, 1966
NOAA GHCN daily station records, observed 1946 to 2025: temperature at the Camden station, 7.9 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 Constantia weather
Common questions
What is the weather usually like in Constantia, NY?
Constantia is warmest in July, when the day usually reaches 81F, and coldest in January, when the night usually falls to 11F. Rain falls on roughly 162 days a year, most often in January. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Constantia, NY?
About 162 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. January is the wettest month with rain on about 17 of its days, and July the driest with about 11.
Does it snow in Constantia, NY?
Yes. Snow falls on about 52 days a year, most often in January, which averages about 14 snowy days. Those are days with measurable snowfall, not days with snow lying on the ground.
What is the hottest it has ever been in Constantia, NY?
The hottest day measured for Constantia reached 98F on August 30, 2022, and the coldest night -41F on February 11, 1979. Both are real NOAA station measurements from the GHCN daily archive, observed 1946 to 2025, at the Camden station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Constantia, NY?
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 Constantia 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.