textproduct: Grand Forks

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- At times near critical fire weather this week.

- Warming up this weekend with potential for heat impacts.

..Heat this Weekend

As ridging builds east, another period of 90+ degree temperatures is forecasted. The highest heat indices will be in southeastern ND, where highs are expected to be in the upper 90s. While humidity will not be as high as with the previous heat wave (we do not have a good source of richer dew point air to advect northward), local ET contribution will likely keep dew points in the upper 50s to 60s. This should maintain heat indices values a couple of degrees above the air temperature.

To put into context recent heat here are a few quick statistics. Digging into climate records a bit, Fargo's average temperatures from July 1 to 20 ranks 3rd, behind 1936 and 2012. Grand Forks WFO site ranks 2nd, behind only 1936. With today and tomorrow being the only days of the next 7 forecasted to have temperatures near average, it appears these records will continue to hold about steady into the end of the month - and depending how stubborn ridging is into next week, our monthly average temperature may even climb slightly. This goes to show that while we have not set a single daily high temperature record this month, the duration of heat (which will continue with the upcoming stretch this weekend) has been impressive for our region.

AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/

Issued at 1226 PM CDT Tue Jul 21 2026

Afternoon cumulus is blossoming across the region. CIGs will generally remain VFR throughout the afternoon. KBJI, KDVL and KTVF all have a low chance of a brief period of MVFR through about mid afternoon. The cumulus field will clear throughout the evening hours. This will coincide with a decrease in winds, going from 15 knots gusting to 25 knots or so out of the north, to variable under 5 knots. Winds will pick up again late in the TAF period, sustained up to 10 knots out of the west by late Wednesday morning. Cloud cover (if any) overnight into early Wednesday will remain VFR.

FGF WATCHES/WARNINGS/ADVISORIES

ND...None. MN...None.

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