Record envelope, standing records and threshold days for Forks 4 NNE (USC00243089), Montana, United States, with 82 years of record.
Key Facts for Forks 4 NNE
Forks 4 NNE (USC00243089) is a weather station in Montana, United States at 48.78 latitude and -107.45 longitude, 792 m (2,599 ft) above sea level.
The station reports from 1915 to 1996, 82 years of record.
1,464 records set at Forks 4 NNE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Forks 4 NNE set a daily record high minimum temperature of 1.1 C (34.0 F) on 13 January 1996.
About the Station
Location: Montana, United States, 48.78 latitude, -107.45 longitude.
Elevation: 792 m (2,599 ft).
Period of record: 1915 to 1996, 82 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Forks 4 NNE. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Forks 4 NNE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.4 C (57.9 F)
-46.1 C (-51.0 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-45.0 C (-49.0 F)
n/a
n/a
Mar
25.0 C (77.0 F)
-37.2 C (-35.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-24.4 C (-11.9 F)
n/a
n/a
May
37.2 C (99.0 F)
-15.0 C (5.0 F)
n/a
n/a
Jun
41.1 C (106.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jul
42.2 C (108.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
41.7 C (107.1 F)
-4.4 C (24.1 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-10.0 C (14.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Nov
23.3 C (73.9 F)
-36.7 C (-34.1 F)
n/a
n/a
Dec
21.7 C (71.1 F)
-41.1 C (-42.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Forks 4 NNE still stand. 1936 holds the most, with 63.
Standing records at Forks 4 NNE by the year they were set
Year set
Standing records
1915
15
1916
31
1917
35
1918
28
1919
33
1920
8
1921
16
1922
15
1923
10
1924
18
1925
15
1926
11
1927
9
1928
17
1929
17
1930
18
1931
21
1932
16
1933
11
1934
24
1935
25
1936
63
1937
17
1938
2
1939
39
1940
26
1941
10
1942
10
1943
19
1944
21
1945
12
1946
9
1947
8
1948
8
1949
17
1950
24
1951
23
1952
10
1953
11
1954
29
1955
20
1956
16
1957
8
1958
9
1959
18
1960
17
1961
7
1962
27
1963
22
1964
15
1965
28
1966
9
1967
16
1968
11
1969
20
1970
8
1971
11
1972
25
1973
14
1974
14
1975
9
1976
14
1977
15
1978
10
1979
8
1980
15
1981
28
1982
13
1983
26
1984
12
1985
34
1986
19
1987
28
1988
32
1989
13
1990
21
1991
17
1992
47
1993
12
1994
6
1995
18
1996
1
All-Time Record Progression
10 new records
10 all-time records were set at Forks 4 NNE between 25 February 1969 and 20 August 1975. Each dot is a new record.
When Forks 4 NNE set new all-time records
Date
Kind
Detail
1969-02-25
Record snow depth
Record snow depth 68.6 cm (27.0 in)
1969-03-08
Record snow depth
Record snow depth 73.7 cm (29.0 in)
1969-03-09
Record snow depth
Record snow depth 76.2 cm (30.0 in)
1970-04-15
Record daily snowfall
Record daily snowfall 22.9 cm (9.0 in)
1970-04-28
Record daily snowfall
Record daily snowfall 25.4 cm (10.0 in)
1971-01-30
Record snow depth
Record snow depth 83.8 cm (33.0 in)
1971-01-31
Record snow depth
Record snow depth 86.4 cm (34.0 in)
1971-02-05
Record snow depth
Record snow depth 91.4 cm (36.0 in)
1971-02-07
Record snow depth
Record snow depth 94.0 cm (37.0 in)
1975-08-20
Record daily precipitation
Record daily precipitation 72.6 mm (2.9 in)
Wettest Day of Each Month
Aug: 72.6 mm (2.9 in)
The wettest day on record for each calendar month at Forks 4 NNE. The most was 72.6 mm (2.9 in) on 20 August 1975.
Record daily precipitation for each month at Forks 4 NNE
Month
Record daily precipitation (mm)
Date
Jan
8.9 mm (0.35 in)
6 January 1926
Feb
8.4 mm (0.33 in)
21 February 1922
Mar
26.4 mm (1.0 in)
21 March 1916
Apr
36.3 mm (1.4 in)
9 April 1927
May
62.2 mm (2.4 in)
31 May 1923
Jun
63.8 mm (2.5 in)
22 June 1976
Jul
61.0 mm (2.4 in)
8 July 1922
Aug
72.6 mm (2.9 in)
20 August 1975
Sep
53.8 mm (2.1 in)
12 September 1930
Oct
38.1 mm (1.5 in)
12 October 1981
Nov
21.3 mm (0.8 in)
2 November 1992
Dec
16.5 mm (0.6 in)
3 December 1977
Period of Record Coverage
1915 to 1996
Complete yearUnder 90 percent of days
82 years of record at Forks 4 NNE, 1915 to 1996. 6 years have data for under 90 percent of days and are left out of rankings: 1936, 1937, 1938, 1984, 1995, 1996.
Cooler than the station meanWarmer than the station mean
One stripe for each of 74 complete years at Forks 4 NNE, 1915 to 1994. Blue stripes are years cooler than the station's own mean of 4.4 C (40.0 F); red stripes are warmer. The coolest year was 1916, at 1.0 C (33.9 F), and the warmest was 1987, at 7.9 C (46.2 F). The strongest colour marks a difference of 3.5 C (6.3 F).
Annual mean temperature at Forks 4 NNE as warming stripes, 1915 to 1994
Year
Annual mean temperature
Difference from the station mean
1915
4.2 C
-0.19 C
1916
1.0 C
-3.40 C
1917
1.6 C
-2.84 C
1918
4.6 C
+0.12 C
1919
3.9 C
-0.56 C
1920
4.3 C
-0.18 C
1921
4.9 C
+0.50 C
1922
2.8 C
-1.59 C
1923
4.3 C
-0.09 C
1924
3.1 C
-1.32 C
1925
4.0 C
-0.44 C
1926
4.4 C
-0.03 C
1927
1.8 C
-2.62 C
1928
3.9 C
-0.58 C
1929
2.7 C
-1.70 C
1930
4.4 C
-0.05 C
1931
6.2 C
+1.78 C
1932
4.1 C
-0.30 C
1933
4.9 C
+0.45 C
1934
5.9 C
+1.49 C
1935
3.3 C
-1.10 C
1939
6.2 C
+1.73 C
1940
5.0 C
+0.56 C
1941
5.7 C
+1.22 C
1942
4.5 C
+0.05 C
1943
4.4 C
-0.08 C
1944
5.2 C
+0.74 C
1945
3.6 C
-0.85 C
1946
4.6 C
+0.21 C
1947
4.2 C
-0.28 C
1948
4.4 C
-0.04 C
1949
4.2 C
-0.25 C
1950
1.7 C
-2.78 C
1951
1.2 C
-3.23 C
1952
3.8 C
-0.60 C
1953
5.4 C
+1.00 C
1954
4.5 C
+0.02 C
1955
2.8 C
-1.66 C
1956
4.1 C
-0.36 C
1957
4.3 C
-0.15 C
1958
5.5 C
+1.06 C
1959
3.8 C
-0.64 C
1960
4.4 C
-0.03 C
1961
5.3 C
+0.86 C
1962
4.6 C
+0.21 C
1963
5.6 C
+1.14 C
1964
4.6 C
+0.17 C
1965
2.8 C
-1.66 C
1966
3.8 C
-0.62 C
1967
4.4 C
0.00 C
1968
4.6 C
+0.20 C
1969
3.6 C
-0.79 C
1970
3.5 C
-0.95 C
1971
3.9 C
-0.52 C
1972
3.3 C
-1.16 C
1973
5.7 C
+1.22 C
1974
5.4 C
+0.94 C
1975
3.8 C
-0.66 C
1976
5.9 C
+1.44 C
1977
5.5 C
+1.02 C
1978
3.4 C
-1.07 C
1979
4.0 C
-0.43 C
1980
5.6 C
+1.16 C
1981
7.5 C
+3.11 C
1982
3.5 C
-0.96 C
1983
5.7 C
+1.25 C
1985
4.0 C
-0.40 C
1986
6.1 C
+1.68 C
1987
7.9 C
+3.46 C
1988
7.2 C
+2.78 C
1991
6.5 C
+2.08 C
1992
6.6 C
+2.21 C
1993
4.6 C
+0.16 C
1994
5.8 C
+1.36 C
The annual mean temperature here has risen by 0.3 C (0.1 to 0.4) per decade over 1915 to 1994. In Fahrenheit: 0.5 F (0.2 to 0.7) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Forks 4 NNE
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.1 to 0.4) per decade
0.5 F (0.2 to 0.7) per decade
1915 to 1994
74
Rise
Mean daily maximum
0.3 C (0.2 to 0.5) per decade
0.6 F (0.3 to 0.8) per decade
1915 to 1994
74
Rise
Mean daily minimum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.6) per decade
1915 to 1994
74
Rise
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
1915 to 1996
Yearly extremes at Forks 4 NNE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
1936
37.2 C (99.0 F)
82
Coldest night (TNn)
-46.1 C (-51.0 F)
1916
-36.7 C (-34.1 F)
82
Wettest day (Rx1day)
72.6 mm (2.9 in)
1975
35.1 mm (1.4 in)
82
Wettest five days (Rx5day)
109.2 mm (4.3 in)
1970
51.4 mm (2.0 in)
82
Longest dry spell (CDD)
105 days
1987
39 days
82
Hottest day (TXx)
The hottest day of the year at Forks 4 NNE, 1915 to 1996. The record is 42.2 C (108.0 F) in 1936, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Forks 4 NNE by year
Year
Hottest day (TXx)
1915
33.9 C (93.0 F)
1916
31.7 C (89.1 F)
1917
39.4 C (102.9 F)
1918
39.4 C (102.9 F)
1919
40.0 C (104.0 F)
1920
37.8 C (100.0 F)
1921
35.6 C (96.1 F)
1922
32.8 C (91.0 F)
1923
33.9 C (93.0 F)
1924
34.4 C (93.9 F)
1925
36.1 C (97.0 F)
1926
36.7 C (98.1 F)
1927
31.7 C (89.1 F)
1928
32.8 C (91.0 F)
1929
37.8 C (100.0 F)
1930
41.7 C (107.1 F)
1931
40.6 C (105.1 F)
1932
37.2 C (99.0 F)
1933
41.1 C (106.0 F)
1934
37.8 C (100.0 F)
1935
36.1 C (97.0 F)
1936
42.2 C (108.0 F)
1937
40.6 C (105.1 F)
1938
25.6 C (78.1 F)
1939
38.3 C (100.9 F)
1940
40.0 C (104.0 F)
1941
39.4 C (102.9 F)
1942
34.4 C (93.9 F)
1943
34.4 C (93.9 F)
1944
34.4 C (93.9 F)
1945
37.2 C (99.0 F)
1946
37.2 C (99.0 F)
1947
37.8 C (100.0 F)
1948
36.7 C (98.1 F)
1949
41.1 C (106.0 F)
1950
36.7 C (98.1 F)
1951
38.9 C (102.0 F)
1952
35.6 C (96.1 F)
1953
35.0 C (95.0 F)
1954
35.0 C (95.0 F)
1955
40.0 C (104.0 F)
1956
36.7 C (98.1 F)
1957
37.8 C (100.0 F)
1958
37.8 C (100.0 F)
1959
38.9 C (102.0 F)
1960
40.0 C (104.0 F)
1961
38.9 C (102.0 F)
1962
32.8 C (91.0 F)
1963
37.2 C (99.0 F)
1964
36.1 C (97.0 F)
1965
33.9 C (93.0 F)
1966
35.0 C (95.0 F)
1967
36.7 C (98.1 F)
1968
36.1 C (97.0 F)
1969
40.0 C (104.0 F)
1970
38.3 C (100.9 F)
1971
40.0 C (104.0 F)
1972
37.2 C (99.0 F)
1973
38.9 C (102.0 F)
1974
36.7 C (98.1 F)
1975
37.8 C (100.0 F)
1976
35.0 C (95.0 F)
1977
35.6 C (96.1 F)
1978
37.2 C (99.0 F)
1979
37.2 C (99.0 F)
1980
36.7 C (98.1 F)
1981
38.9 C (102.0 F)
1982
35.0 C (95.0 F)
1983
41.7 C (107.1 F)
1984
38.9 C (102.0 F)
1985
40.0 C (104.0 F)
1986
35.6 C (96.1 F)
1987
37.2 C (99.0 F)
1988
41.1 C (106.0 F)
1989
38.3 C (100.9 F)
1990
39.4 C (102.9 F)
1991
37.8 C (100.0 F)
1992
36.7 C (98.1 F)
1993
35.0 C (95.0 F)
1994
37.2 C (99.0 F)
1995
39.4 C (102.9 F)
1996
8.9 C (48.0 F)
Coldest night (TNn)
The coldest night of the year at Forks 4 NNE, 1915 to 1996. The record is -46.1 C (-51.0 F) in 1916, marked on the chart; the median year is -36.7 C (-34.1 F).
Coldest night (TNn) at Forks 4 NNE by year
Year
Coldest night (TNn)
1915
-36.7 C (-34.1 F)
1916
-46.1 C (-51.0 F)
1917
-43.3 C (-45.9 F)
1918
-41.7 C (-43.1 F)
1919
-37.2 C (-35.0 F)
1920
-37.8 C (-36.0 F)
1921
-30.0 C (-22.0 F)
1922
-36.7 C (-34.1 F)
1923
-38.3 C (-36.9 F)
1924
-38.3 C (-36.9 F)
1925
-31.7 C (-25.1 F)
1926
-31.1 C (-24.0 F)
1927
-39.4 C (-38.9 F)
1928
-37.8 C (-36.0 F)
1929
-41.1 C (-42.0 F)
1930
-37.8 C (-36.0 F)
1931
-25.6 C (-14.1 F)
1932
-34.4 C (-29.9 F)
1933
-37.2 C (-35.0 F)
1934
-35.0 C (-31.0 F)
1935
-39.4 C (-38.9 F)
1936
-45.0 C (-49.0 F)
1937
-38.9 C (-38.0 F)
1938
-35.0 C (-31.0 F)
1939
-43.3 C (-45.9 F)
1940
-36.7 C (-34.1 F)
1941
-29.4 C (-20.9 F)
1942
-35.0 C (-31.0 F)
1943
-40.0 C (-40.0 F)
1944
-31.1 C (-24.0 F)
1945
-33.9 C (-29.0 F)
1946
-32.2 C (-26.0 F)
1947
-36.1 C (-33.0 F)
1948
-34.4 C (-29.9 F)
1949
-37.2 C (-35.0 F)
1950
-42.8 C (-45.0 F)
1951
-38.3 C (-36.9 F)
1952
-35.6 C (-32.1 F)
1953
-33.9 C (-29.0 F)
1954
-43.3 C (-45.9 F)
1955
-39.4 C (-38.9 F)
1956
-37.8 C (-36.0 F)
1957
-37.2 C (-35.0 F)
1958
-31.7 C (-25.1 F)
1959
-33.3 C (-27.9 F)
1960
-34.4 C (-29.9 F)
1961
-33.9 C (-29.0 F)
1962
-39.4 C (-38.9 F)
1963
-36.1 C (-33.0 F)
1964
-36.7 C (-34.1 F)
1965
-35.6 C (-32.1 F)
1966
-36.7 C (-34.1 F)
1967
-36.1 C (-33.0 F)
1968
-41.1 C (-42.0 F)
1969
-41.1 C (-42.0 F)
1970
-38.3 C (-36.9 F)
1971
-37.2 C (-35.0 F)
1972
-41.1 C (-42.0 F)
1973
-32.2 C (-26.0 F)
1974
-37.8 C (-36.0 F)
1975
-33.3 C (-27.9 F)
1976
-37.8 C (-36.0 F)
1977
-40.6 C (-41.1 F)
1978
-37.2 C (-35.0 F)
1979
-36.1 C (-33.0 F)
1980
-37.2 C (-35.0 F)
1981
-31.1 C (-24.0 F)
1982
-37.2 C (-35.0 F)
1983
-41.1 C (-42.0 F)
1984
-33.9 C (-29.0 F)
1985
-35.0 C (-31.0 F)
1986
-33.9 C (-29.0 F)
1987
-27.2 C (-17.0 F)
1988
-35.0 C (-31.0 F)
1989
-40.6 C (-41.1 F)
1990
-36.7 C (-34.1 F)
1991
-32.2 C (-26.0 F)
1992
-34.4 C (-29.9 F)
1993
-31.1 C (-24.0 F)
1994
-38.3 C (-36.9 F)
1995
-28.9 C (-20.0 F)
1996
-39.4 C (-38.9 F)
Wettest day (Rx1day)
The wettest day of the year at Forks 4 NNE, 1915 to 1996. The record is 72.6 mm (2.9 in) in 1975, marked on the chart; the median year is 35.1 mm (1.4 in).
Wettest day (Rx1day) at Forks 4 NNE by year
Year
Wettest day (Rx1day)
1915
35.1 mm (1.4 in)
1916
47.2 mm (1.9 in)
1917
14.5 mm (0.6 in)
1918
45.2 mm (1.8 in)
1919
34.8 mm (1.4 in)
1920
34.3 mm (1.4 in)
1921
47.2 mm (1.9 in)
1922
61.0 mm (2.4 in)
1923
62.2 mm (2.4 in)
1924
58.4 mm (2.3 in)
1925
49.5 mm (1.9 in)
1926
28.7 mm (1.1 in)
1927
57.9 mm (2.3 in)
1928
30.5 mm (1.2 in)
1929
38.4 mm (1.5 in)
1930
53.8 mm (2.1 in)
1931
30.7 mm (1.2 in)
1932
43.2 mm (1.7 in)
1933
42.2 mm (1.7 in)
1934
23.9 mm (0.9 in)
1935
21.8 mm (0.9 in)
1936
19.3 mm (0.8 in)
1937
26.2 mm (1.0 in)
1938
4.6 mm (0.18 in)
1939
55.4 mm (2.2 in)
1940
31.8 mm (1.3 in)
1941
35.6 mm (1.4 in)
1942
45.0 mm (1.8 in)
1943
25.4 mm (1.0 in)
1944
36.8 mm (1.4 in)
1945
25.4 mm (1.0 in)
1946
35.6 mm (1.4 in)
1947
26.2 mm (1.0 in)
1948
38.4 mm (1.5 in)
1949
34.5 mm (1.4 in)
1950
29.5 mm (1.2 in)
1951
23.1 mm (0.9 in)
1952
32.0 mm (1.3 in)
1953
44.5 mm (1.8 in)
1954
44.7 mm (1.8 in)
1955
30.7 mm (1.2 in)
1956
21.6 mm (0.9 in)
1957
38.6 mm (1.5 in)
1958
21.3 mm (0.8 in)
1959
31.8 mm (1.3 in)
1960
17.8 mm (0.7 in)
1961
21.3 mm (0.8 in)
1962
54.9 mm (2.2 in)
1963
36.8 mm (1.4 in)
1964
24.4 mm (1.0 in)
1965
44.2 mm (1.7 in)
1966
24.9 mm (1.0 in)
1967
29.2 mm (1.1 in)
1968
39.4 mm (1.6 in)
1969
27.9 mm (1.1 in)
1970
39.9 mm (1.6 in)
1971
19.8 mm (0.8 in)
1972
28.4 mm (1.1 in)
1973
24.1 mm (0.9 in)
1974
45.7 mm (1.8 in)
1975
72.6 mm (2.9 in)
1976
63.8 mm (2.5 in)
1977
28.2 mm (1.1 in)
1978
30.5 mm (1.2 in)
1979
27.4 mm (1.1 in)
1980
26.7 mm (1.1 in)
1981
38.1 mm (1.5 in)
1982
56.4 mm (2.2 in)
1983
55.4 mm (2.2 in)
1984
16.3 mm (0.6 in)
1985
49.8 mm (2.0 in)
1986
45.0 mm (1.8 in)
1987
35.1 mm (1.4 in)
1988
35.6 mm (1.4 in)
1989
35.6 mm (1.4 in)
1990
51.8 mm (2.0 in)
1991
44.7 mm (1.8 in)
1992
37.8 mm (1.5 in)
1993
29.0 mm (1.1 in)
1994
33.0 mm (1.3 in)
1995
39.4 mm (1.6 in)
1996
2.5 mm (0.10 in)
Wettest five days (Rx5day)
The wettest five days of the year at Forks 4 NNE, 1915 to 1996. The record is 109.2 mm (4.3 in) in 1970, marked on the chart; the median year is 51.4 mm (2.0 in).
Wettest five days (Rx5day) at Forks 4 NNE by year
Year
Wettest five days (Rx5day)
1915
47.0 mm (1.9 in)
1916
54.1 mm (2.1 in)
1917
36.1 mm (1.4 in)
1918
63.5 mm (2.5 in)
1919
54.7 mm (2.2 in)
1920
53.6 mm (2.1 in)
1921
62.3 mm (2.5 in)
1922
64.8 mm (2.6 in)
1923
93.0 mm (3.7 in)
1924
62.7 mm (2.5 in)
1925
49.5 mm (1.9 in)
1926
38.9 mm (1.5 in)
1927
84.0 mm (3.3 in)
1928
65.1 mm (2.6 in)
1929
38.9 mm (1.5 in)
1930
59.2 mm (2.3 in)
1931
51.8 mm (2.0 in)
1932
74.0 mm (2.9 in)
1933
91.2 mm (3.6 in)
1934
26.9 mm (1.1 in)
1935
52.3 mm (2.1 in)
1936
24.7 mm (1.0 in)
1937
36.4 mm (1.4 in)
1938
8.4 mm (0.33 in)
1939
76.0 mm (3.0 in)
1940
42.5 mm (1.7 in)
1941
43.2 mm (1.7 in)
1942
87.9 mm (3.5 in)
1943
45.9 mm (1.8 in)
1944
58.1 mm (2.3 in)
1945
47.2 mm (1.9 in)
1946
42.5 mm (1.7 in)
1947
59.2 mm (2.3 in)
1948
44.8 mm (1.8 in)
1949
37.5 mm (1.5 in)
1950
33.2 mm (1.3 in)
1951
50.6 mm (2.0 in)
1952
59.4 mm (2.3 in)
1953
59.1 mm (2.3 in)
1954
49.6 mm (2.0 in)
1955
33.5 mm (1.3 in)
1956
35.8 mm (1.4 in)
1957
39.9 mm (1.6 in)
1958
21.3 mm (0.8 in)
1959
53.3 mm (2.1 in)
1960
19.1 mm (0.8 in)
1961
43.6 mm (1.7 in)
1962
93.8 mm (3.7 in)
1963
46.2 mm (1.8 in)
1964
55.6 mm (2.2 in)
1965
51.5 mm (2.0 in)
1966
41.4 mm (1.6 in)
1967
63.0 mm (2.5 in)
1968
49.8 mm (2.0 in)
1969
47.0 mm (1.9 in)
1970
109.2 mm (4.3 in)
1971
23.1 mm (0.9 in)
1972
45.2 mm (1.8 in)
1973
44.4 mm (1.7 in)
1974
66.3 mm (2.6 in)
1975
99.3 mm (3.9 in)
1976
77.7 mm (3.1 in)
1977
51.4 mm (2.0 in)
1978
51.1 mm (2.0 in)
1979
51.3 mm (2.0 in)
1980
44.0 mm (1.7 in)
1981
44.7 mm (1.8 in)
1982
80.0 mm (3.1 in)
1983
63.0 mm (2.5 in)
1984
22.2 mm (0.9 in)
1985
52.2 mm (2.1 in)
1986
78.5 mm (3.1 in)
1987
55.2 mm (2.2 in)
1988
55.9 mm (2.2 in)
1989
35.6 mm (1.4 in)
1990
51.8 mm (2.0 in)
1991
84.6 mm (3.3 in)
1992
62.7 mm (2.5 in)
1993
39.7 mm (1.6 in)
1994
35.3 mm (1.4 in)
1995
59.8 mm (2.4 in)
1996
2.5 mm (0.10 in)
Longest dry spell (CDD)
The longest dry spell of the year at Forks 4 NNE, 1915 to 1996. The record is 105 days in 1987, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Forks 4 NNE by year
Year
Longest dry spell (CDD)
1915
42 days
1916
36 days
1917
66 days
1918
25 days
1919
42 days
1920
40 days
1921
39 days
1922
34 days
1923
41 days
1924
23 days
1925
52 days
1926
52 days
1927
28 days
1928
54 days
1929
28 days
1930
31 days
1931
48 days
1932
47 days
1933
40 days
1934
51 days
1935
43 days
1936
22 days
1937
58 days
1938
36 days
1939
52 days
1940
35 days
1941
41 days
1942
37 days
1943
61 days
1944
76 days
1945
41 days
1946
29 days
1947
37 days
1948
35 days
1949
76 days
1950
30 days
1951
41 days
1952
42 days
1953
31 days
1954
35 days
1955
34 days
1956
44 days
1957
29 days
1958
30 days
1959
25 days
1960
50 days
1961
30 days
1962
31 days
1963
41 days
1964
49 days
1965
53 days
1966
32 days
1967
26 days
1968
42 days
1969
71 days
1970
35 days
1971
25 days
1972
26 days
1973
41 days
1974
53 days
1975
28 days
1976
38 days
1977
53 days
1978
27 days
1979
35 days
1980
39 days
1981
50 days
1982
33 days
1983
41 days
1984
52 days
1985
42 days
1986
32 days
1987
105 days
1988
54 days
1989
31 days
1990
33 days
1991
35 days
1992
63 days
1993
36 days
1994
45 days
1995
25 days
1996
17 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.
Frost Dates and Growing Season
74 years with a frost
Across 74 years with a frost, the median last spring frost at Forks 4 NNE falls on 23 May and the median first autumn frost on 13 September, which leaves a median of 111 days between them.
In 1962 to 1994 the median growing season was 120 days. That is 13 days more than in 1915 to 1947.
Fitted over all years, the growing season changes by +3.4 days per decade at this station.
Frost dates and growing season at Forks 4 NNE
Measure
Median, all years
Earliest period (1915 to 1947)
Recent period (1962 to 1994)
Recent against earliest
Fitted trend
Last spring frost
23 May
28 May
19 May
9 days earlier
-1.7 days per decade
First autumn frost
13 September
10 September
14 September
4 days later
+1.7 days per decade
Growing days
111 days
107 days
120 days
13 days more
+3.4 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
77 years, 1915 to 1994
A day with at least 35.5 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 74.0 mm (2.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Forks 4 NNE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
35.5 mm (1.4 in)
5 years
47.0 mm (1.9 in)
10 years
54.1 mm (2.1 in)
25 years
62.6 mm (2.5 in)
50 years
68.5 mm (2.7 in)
100 years
74.0 mm (2.9 in)
Longer than the 77 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 77 years of values from 1915 to 1994.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 72.6 mm (2.9 in) in 1975; 63.8 mm (2.5 in) in 1976; 62.2 mm (2.4 in) in 1923.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Forks 4 NNE, at 1979. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1979 ran 0.5 C (0.8 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Forks 4 NNE, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1979
+0.5
+0.8
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Forks 4 NNE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Forks 4 NNE 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.