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Blackduck, MN Weather
Blackduck, Minnesota sits at 47.7319, -94.5596. Its warmest month is July, when the day usually reaches 77F, and its coldest is January, when the night usually falls to -8F. May is the wettest, with rain on about 10 days. The hottest day in the station record is 98F on August 20, 1976, and the coldest night -46F on January 28, 1966. 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 Blackduck weather
Blackduck sits at 47.7319, -94.5596 and covers about 2.326 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 Blackduck
Blackduck is warmest in July, when the day usually reaches 77F, and coldest in January, when the night usually falls to -8F. May 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
15F
-8F
5
6
February
22F
-4F
5
4
March
36F
11F
5
3
April
50F
27F
7
2
May
63F
39F
10
0
June
72F
48F
9
0
July
77F
53F
8
0
August
76F
51F
7
0
September
68F
43F
8
0
October
52F
32F
8
1
November
36F
18F
6
3
December
21F
2F
6
5
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Kelliher station 15.3 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.
Blackduck weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Blackduck: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Blackduck weather records
In 64,958 days of observations Blackduck has been as hot as 98F and as cold as -46F. Not averages: the actual days.
Hottest day
98F
August 20, 1976
Coldest night
-46F
January 28, 1966
Wettest day
4.40 in
June 17, 2018
Biggest snow
16.0 in
April 20, 1970
NOAA GHCN daily station records, observed 1909 to 2026: temperature at the Kelliher station, 15.3 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 Blackduck weather
Common questions
What is the weather usually like in Blackduck, MN?
Blackduck is warmest in July, when the day usually reaches 77F, and coldest in January, when the night usually falls to -8F. Rain falls on roughly 84 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 Blackduck, MN?
About 84 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 10 of its days, and January the driest with about 5.
Does it snow in Blackduck, MN?
Yes. Snow falls on about 24 days a year, most often in January, which averages about 6 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 Blackduck, MN?
The hottest day measured for Blackduck reached 98F on August 20, 1976, and the coldest night -46F on January 28, 1966. Both are real NOAA station measurements from the GHCN daily archive, observed 1909 to 2026, at the Kelliher station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Blackduck, MN?
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 Blackduck 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.