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Dover, DE Weather
Dover, Delaware sits at 39.1606, -75.5217. Its warmest month is July, when the day usually reaches 87F, and its coldest is January, when the night usually falls to 28F. March is the wettest, with rain on about 10 days. The hottest day in the station record is 104F on July 21, 1930, and the coldest night -11F on February 9, 1934. 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 Dover weather
Dover sits at 39.1606, -75.5217 and covers about 23.817 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 Dover
Dover is warmest in July, when the day usually reaches 87F, and coldest in January, when the night usually falls to 28F. March is the wettest month, with rain on about 10 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
45F
28F
9
2
February
47F
29F
9
2
March
55F
36F
10
1
April
66F
45F
10
0
May
74F
54F
10
0
June
83F
64F
9
0
July
87F
69F
9
0
August
85F
67F
8
0
September
79F
61F
8
0
October
69F
50F
8
0
November
58F
39F
7
0
December
49F
32F
10
1
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Dover station 1.3 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.
Dover weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Dover: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Dover weather records
In 161,761 days of observations Dover has been as hot as 104F and as cold as -11F. Not averages: the actual days.
Hottest day
104F
July 21, 1930
Coldest night
-11F
February 9, 1934
Wettest day
8.50 in
July 13, 1975
Biggest snow
25.0 in
February 19, 1979
NOAA GHCN daily station records, observed 1893 to 2026: temperature at the Dover station, 1.3 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 Dover weather
Common questions
What is the weather usually like in Dover, DE?
Dover is warmest in July, when the day usually reaches 87F, and coldest in January, when the night usually falls to 28F. Rain falls on roughly 107 days a year, most often in March. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Dover, DE?
About 107 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. March is the wettest month with rain on about 10 of its days, and November the driest with about 7.
Does it snow in Dover, DE?
Yes. Snow falls on about 6 days a year, most often in January, which averages about 2 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 Dover, DE?
The hottest day measured for Dover reached 104F on July 21, 1930, and the coldest night -11F on February 9, 1934. Both are real NOAA station measurements from the GHCN daily archive, observed 1893 to 2026, at the Dover station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Dover, DE?
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 Dover 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.