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Amherst, ME Weather
Amherst, Maine sits at 44.8699, -68.4005. Its warmest month is July, when the day usually reaches 79F, and its coldest is January, when the night usually falls to 7F. December is the wettest, with rain on about 14 days. The hottest day in the station record is 95F on June 20, 2020, and the coldest night -30F on January 16, 2009. 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 Amherst weather
Amherst sits at 44.8699, -68.4005 and covers about 39.307 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 Amherst
Amherst is warmest in July, when the day usually reaches 79F, and coldest in January, when the night usually falls to 7F. December is the wettest month, with rain on about 14 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
January
28F
7F
11
February
31F
9F
10
March
39F
19F
11
April
52F
31F
12
May
64F
41F
13
June
72F
50F
12
July
79F
56F
11
August
78F
54F
11
September
70F
47F
9
October
57F
37F
12
November
45F
27F
11
December
33F
16F
14
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Old Town 2 W station 15.2 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.
Amherst weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Amherst: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Amherst weather records
In 24,408 days of observations Amherst has been as hot as 95F and as cold as -30F. Not averages: the actual days.
Hottest day
95F
June 20, 2020
Coldest night
-30F
January 16, 2009
Wettest day
5.40 in
September 30, 2015
Biggest snow
21.0 in
February 14, 2017
NOAA GHCN daily station records, observed 2002 to 2025: temperature at the Old Town 2 W station, 15.2 miles away; snowfall at the Old Town 4.1 Ese station, 13.4 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 Amherst weather
Common questions
What is the weather usually like in Amherst, ME?
Amherst is warmest in July, when the day usually reaches 79F, and coldest in January, when the night usually falls to 7F. Rain falls on roughly 137 days a year, most often in December. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Amherst, ME?
About 137 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. December is the wettest month with rain on about 14 of its days, and September the driest with about 9.
What is the hottest it has ever been in Amherst, ME?
The hottest day measured for Amherst reached 95F on June 20, 2020, and the coldest night -30F on January 16, 2009. Both are real NOAA station measurements from the GHCN daily archive, observed 2002 to 2025, at the Old Town 2 W station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Amherst, ME?
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 Amherst 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.