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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Grand Forks Af Weather Records (USW00094925)

Record envelope, standing records and threshold days for Grand Forks Af (USW00094925), North Dakota, United States, with 68 years of record.

Key Facts for Grand Forks Af

  • Grand Forks Af (USW00094925) is a weather station in North Dakota, United States at 47.97 latitude and -97.40 longitude, 276 m (906 ft) above sea level.
  • The station reports from 1959 to 2026, 68 years of record.
  • 1,464 records set at Grand Forks Af still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: North Dakota, United States, 47.97 latitude, -97.40 longitude.
  • Elevation: 276 m (906 ft).
  • Period of record: 1959 to 2026, 68 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

79 days at or beyond a record
Daily record high and record low at Grand Forks Af, with 2026 drawn through them The band shows the record high and record low for each calendar day at Grand Forks Af. The lines show the 2026 daily maximum and minimum. 79 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Grand Forks Af. The lines show the 2026 daily maximum and minimum. 79 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Grand Forks Af, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan6.1 C (43.0 F)-37.2 C (-35.0 F)5.2 C (41.4 F)-30.3 C (-22.5 F)
Feb13.3 C (55.9 F)-37.8 C (-36.0 F)7.9 C (46.2 F)-28.1 C (-18.6 F)
Mar26.1 C (79.0 F)-35.0 C (-31.0 F)15.6 C (60.1 F)-17.9 C (-0.2 F)
Apr28.3 C (82.9 F)-17.8 C (0.0 F)22.9 C (73.2 F)-9.4 C (15.1 F)
May37.8 C (100.0 F)-16.7 C (1.9 F)36.4 C (97.5 F)1.4 C (34.5 F)
Jun37.2 C (99.0 F)-2.8 C (27.0 F)31.9 C (89.4 F)5.7 C (42.3 F)
Jul36.7 C (98.1 F)3.9 C (39.0 F)33.7 C (92.7 F)5.5 C (41.9 F)
Aug38.9 C (102.0 F)0.6 C (33.1 F)33.9 C (93.0 F)5.0 C (41.0 F)
Sep35.6 C (96.1 F)-5.0 C (23.0 F)30.7 C (87.3 F)1.3 C (34.3 F)
Oct32.5 C (90.5 F)-9.4 C (15.1 F)32.5 C (90.5 F)-3.8 C (25.2 F)
Nov20.6 C (69.1 F)-30.0 C (-22.0 F)19.7 C (67.5 F)-13.2 C (8.2 F)
Dec11.1 C (52.0 F)-37.2 C (-35.0 F)9.8 C (49.6 F)-27.2 C (-17.0 F)

Which Years Hold Standing Records

1,464 standing records
Standing records at Grand Forks Af by the year they were set 1,464 records at Grand Forks Af still stand. 2025 holds the most, with 149. 0501001501959: 591960: 881961: 1191962: 1171963: 1311964: 1381965: 971966: 1251967: 1281968: 1141969: 861970: 1132025: 1491959196119631965196719692025
1,464 records at Grand Forks Af still stand. 2025 holds the most, with 149.
Standing records at Grand Forks Af by the year they were set
Year setStanding records
195959
196088
1961119
1962117
1963131
1964138
196597
1966125
1967128
1968114
196986
1970113
2025149

Wettest Day of Each Month

May: 77.7 mm (3.1 in)
Record daily precipitation for each month at Grand Forks Af The wettest day on record for each calendar month at Grand Forks Af. The most was 77.7 mm (3.1 in) on 29 May 1962. 020406080 Jan: 21.6 mm (0.9 in), 24 January 1967 Jan Feb: 10.4 mm (0.4 in), 15 February 1962 Feb Mar: 29.5 mm (1.2 in), 3 March 1966 Mar Apr: 31.0 mm (1.2 in), 19 April 1970 Apr May: 77.7 mm (3.1 in), 29 May 1962 May Jun: 57.2 mm (2.3 in), 8 June 1964 Jun Jul: 37.1 mm (1.5 in), 25 July 1966 Jul Aug: 33.3 mm (1.3 in), 21 August 1964 Aug Sep: 54.4 mm (2.1 in), 7 September 1970 Sep Oct: 19.3 mm (0.8 in), 10 October 1969 Oct Nov: 23.9 mm (0.9 in), 1 November 1970 Nov Dec: 18.0 mm (0.7 in), 5 December 1960 Dec
The wettest day on record for each calendar month at Grand Forks Af. The most was 77.7 mm (3.1 in) on 29 May 1962.
Record daily precipitation for each month at Grand Forks Af
MonthRecord daily precipitation (mm)Date
Jan21.6 mm (0.9 in)24 January 1967
Feb10.4 mm (0.4 in)15 February 1962
Mar29.5 mm (1.2 in)3 March 1966
Apr31.0 mm (1.2 in)19 April 1970
May77.7 mm (3.1 in)29 May 1962
Jun57.2 mm (2.3 in)8 June 1964
Jul37.1 mm (1.5 in)25 July 1966
Aug33.3 mm (1.3 in)21 August 1964
Sep54.4 mm (2.1 in)7 September 1970
Oct19.3 mm (0.8 in)10 October 1969
Nov23.9 mm (0.9 in)1 November 1970
Dec18.0 mm (0.7 in)5 December 1960

Period of Record Coverage

1959 to 2025
Days with data per year at Grand Forks Af 13 years of record at Grand Forks Af, 1959 to 2025. 3 years have data for under 90 percent of days and are left out of rankings: 1959, 1965, 1969. 1959: 108 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 365 of 365 days1964: 362 of 366 days1965: 327 of 365 days1966: 363 of 365 days1967: 358 of 365 days1968: 364 of 366 days1969: 294 of 365 days1970: 362 of 365 days2025: 359 of 365 days1960196519702025
13 years of record at Grand Forks Af, 1959 to 2025. 3 years have data for under 90 percent of days and are left out of rankings: 1959, 1965, 1969.
Days with data per year at Grand Forks Af
YearDays with dataShare of yearComplete
195910830%No
1960366100%Yes
1961365100%Yes
1962364100%Yes
1963365100%Yes
196436299%Yes
196532790%No
196636399%Yes
196735898%Yes
196836499%Yes
196929481%No
197036299%Yes
202535998%Yes

Latest Records

0

No records were set at this station in the latest data.

Climate Trend

10 complete years, 1960 to 2025
Annual mean temperature at Grand Forks Af as warming stripes, 1960 to 2025 One stripe for each of 10 complete years at Grand Forks Af, 1960 to 2025. Blue stripes are years cooler than the station's own mean of 4.0 C (39.2 F); red stripes are warmer. The coolest year was 1966, at 2.1 C (35.9 F), and the warmest was 2025, at 6.3 C (43.4 F). The strongest colour marks a difference of 2.4 C (4.3 F). 1960: 4.2 C, +0.1 C from the station mean1961: 5.0 C, +1.0 C from the station mean1962: 3.4 C, -0.6 C from the station mean1963: 5.1 C, +1.0 C from the station mean1964: 3.8 C, -0.2 C from the station mean1966: 2.1 C, -1.9 C from the station mean1967: 2.9 C, -1.2 C from the station mean1968: 4.0 C, 0.0 C from the station mean1970: 3.4 C, -0.6 C from the station mean2025: 6.3 C, +2.3 C from the station mean1960197019801990200020102020
One stripe for each of 10 complete years at Grand Forks Af, 1960 to 2025. Blue stripes are years cooler than the station's own mean of 4.0 C (39.2 F); red stripes are warmer. The coolest year was 1966, at 2.1 C (35.9 F), and the warmest was 2025, at 6.3 C (43.4 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Grand Forks Af as warming stripes, 1960 to 2025
YearAnnual mean temperatureDifference from the station mean
19604.2 C+0.14 C
19615.0 C+0.96 C
19623.4 C-0.57 C
19635.1 C+1.05 C
19643.8 C-0.22 C
19662.1 C-1.87 C
19672.9 C-1.16 C
19684.0 C-0.04 C
19703.4 C-0.59 C
20256.3 C+2.32 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1959 to 2026
Yearly extremes at Grand Forks Af: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)196136.3 C (97.3 F)14
Coldest night (TNn)-37.8 C (-36.0 F)1967-33.8 C (-28.9 F)14
Wettest day (Rx1day)77.7 mm (3.1 in)196237.1 mm (1.5 in)13
Wettest five days (Rx5day)123.5 mm (4.9 in)196461.0 mm (2.4 in)13
Longest dry spell (CDD)54 days196432 days13

Hottest day (TXx)

Hottest day (TXx) at Grand Forks Af by year The hottest day of the year at Grand Forks Af, 1959 to 2026. The record is 38.9 C (102.0 F) in 1961, marked on the chart; the median year is 36.3 C (97.3 F). 253035401960198020002020Record: 38.9 C (102.0 F) in 1961
The hottest day of the year at Grand Forks Af, 1959 to 2026. The record is 38.9 C (102.0 F) in 1961, marked on the chart; the median year is 36.3 C (97.3 F).
Hottest day (TXx) at Grand Forks Af by year
YearHottest day (TXx)
195925.6 C (78.1 F)
196036.7 C (98.1 F)
196138.9 C (102.0 F)
196233.3 C (91.9 F)
196335.6 C (96.1 F)
196437.8 C (100.0 F)
196536.7 C (98.1 F)
196632.2 C (90.0 F)
196734.4 C (93.9 F)
196836.1 C (97.0 F)
196935.6 C (96.1 F)
197037.2 C (99.0 F)
202536.4 C (97.5 F)
202638.0 C (100.4 F)

Coldest night (TNn)

Coldest night (TNn) at Grand Forks Af by year The coldest night of the year at Grand Forks Af, 1959 to 2026. The record is -37.8 C (-36.0 F) in 1967, marked on the chart; the median year is -33.8 C (-28.9 F). -40-35-30-25-201960198020002020Record: -37.8 C (-36.0 F) in 1967
The coldest night of the year at Grand Forks Af, 1959 to 2026. The record is -37.8 C (-36.0 F) in 1967, marked on the chart; the median year is -33.8 C (-28.9 F).
Coldest night (TNn) at Grand Forks Af by year
YearColdest night (TNn)
1959-21.1 C (-6.0 F)
1960-30.0 C (-22.0 F)
1961-32.8 C (-27.0 F)
1962-35.0 C (-31.0 F)
1963-34.4 C (-29.9 F)
1964-31.7 C (-25.1 F)
1965-36.1 C (-33.0 F)
1966-36.1 C (-33.0 F)
1967-37.8 C (-36.0 F)
1968-37.2 C (-35.0 F)
1969-33.3 C (-27.9 F)
1970-36.7 C (-34.1 F)
2025-30.3 C (-22.5 F)
2026-29.4 C (-20.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Grand Forks Af by year The wettest day of the year at Grand Forks Af, 1959 to 2026. The record is 77.7 mm (3.1 in) in 1962, marked on the chart; the median year is 37.1 mm (1.5 in). 0204060801960198020002020Record: 77.7 mm (3.1 in) in 1962
The wettest day of the year at Grand Forks Af, 1959 to 2026. The record is 77.7 mm (3.1 in) in 1962, marked on the chart; the median year is 37.1 mm (1.5 in).
Wettest day (Rx1day) at Grand Forks Af by year
YearWettest day (Rx1day)
195916.3 mm (0.6 in)
196026.9 mm (1.1 in)
196135.1 mm (1.4 in)
196277.7 mm (3.1 in)
196335.1 mm (1.4 in)
196457.2 mm (2.3 in)
196538.1 mm (1.5 in)
196637.1 mm (1.5 in)
196728.7 mm (1.1 in)
196842.7 mm (1.7 in)
196951.3 mm (2.0 in)
197054.4 mm (2.1 in)
2025n/a
202630.8 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Grand Forks Af by year The wettest five days of the year at Grand Forks Af, 1959 to 2026. The record is 123.5 mm (4.9 in) in 1964, marked on the chart; the median year is 61.0 mm (2.4 in). 0501001501960198020002020Record: 123.5 mm (4.9 in) in 1964
The wettest five days of the year at Grand Forks Af, 1959 to 2026. The record is 123.5 mm (4.9 in) in 1964, marked on the chart; the median year is 61.0 mm (2.4 in).
Wettest five days (Rx5day) at Grand Forks Af by year
YearWettest five days (Rx5day)
195922.4 mm (0.9 in)
196045.2 mm (1.8 in)
196169.2 mm (2.7 in)
196278.8 mm (3.1 in)
196353.1 mm (2.1 in)
1964123.5 mm (4.9 in)
196561.0 mm (2.4 in)
196668.1 mm (2.7 in)
196746.7 mm (1.8 in)
196881.4 mm (3.2 in)
196982.1 mm (3.2 in)
197057.9 mm (2.3 in)
2025n/a
202638.0 mm (1.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Grand Forks Af by year The longest dry spell of the year at Grand Forks Af, 1959 to 2026. The record is 54 days in 1964, marked on the chart; the median year is 32 days. 02040601960198020002020Record: 54 days in 1964
The longest dry spell of the year at Grand Forks Af, 1959 to 2026. The record is 54 days in 1964, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Grand Forks Af by year
YearLongest dry spell (CDD)
195932 days
196052 days
196128 days
196240 days
196332 days
196454 days
196534 days
196625 days
196735 days
196844 days
196928 days
197018 days
2025n/a
20262 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

  • Data for Grand Forks Af standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Grand Forks Af threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).