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Forest Lake, PA Weather
Forest Lake, Pennsylvania sits at 41.8882, -75.9594. Its warmest month is July, when the day usually reaches 79F, and its coldest is January, when the night usually falls to 16F. January is the wettest, with rain on about 16 days. The hottest day in the station record is 98F on July 16, 1988, and the coldest night -20F on January 15, 1957. 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 Forest Lake weather
Forest Lake sits at 41.8882, -75.9594 and covers about 0.581 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 Forest Lake
Forest Lake is warmest in July, when the day usually reaches 79F, and coldest in January, when the night usually falls to 16F. January is the wettest month, with rain on about 16 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
30F
16F
16
16
February
32F
18F
14
14
March
41F
25F
15
10
April
54F
36F
14
4
May
66F
47F
14
0
June
74F
56F
12
0
July
79F
60F
13
0
August
77F
59F
11
0
September
70F
51F
11
0
October
57F
41F
13
1
November
45F
31F
14
6
December
34F
22F
16
13
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Binghamton station 21.6 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.
Forest Lake weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Forest Lake: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Forest Lake weather records
In 107,665 days of observations Forest Lake has been as hot as 98F and as cold as -20F. Not averages: the actual days.
Hottest day
98F
July 16, 1988
Coldest night
-20F
January 15, 1957
Wettest day
8.90 in
September 8, 2011
Biggest snow
30.0 in
December 17, 2020
NOAA GHCN daily station records, observed 1951 to 2025: temperature at the Binghamton station, 21.6 miles away; precipitation at the Endicott 5.2 Sse station, 10.3 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 Forest Lake weather
Common questions
What is the weather usually like in Forest Lake, PA?
Forest Lake is warmest in July, when the day usually reaches 79F, and coldest in January, when the night usually falls to 16F. Rain falls on roughly 163 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 Forest Lake, PA?
About 163 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 16 of its days, and August the driest with about 11.
Does it snow in Forest Lake, PA?
Yes. Snow falls on about 64 days a year, most often in January, which averages about 16 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 Forest Lake, PA?
The hottest day measured for Forest Lake reached 98F on July 16, 1988, and the coldest night -20F on January 15, 1957. Both are real NOAA station measurements from the GHCN daily archive, observed 1951 to 2025, at the Binghamton station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Forest Lake, PA?
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 Forest Lake 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.