Record envelope, standing records and threshold days for Grouse (USC00103882), Idaho, United States, with 73 years of record.
Key Facts for Grouse
Grouse (USC00103882) is a weather station in Idaho, United States at 43.72 latitude and -113.55 longitude, 1,829 m (6,001 ft) above sea level.
The station reports from 1932 to 2004, 73 years of record.
1,464 records set at Grouse still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Grouse set a monthly record daily precipitation of 55.9 mm (2.2 in) on 5 December 2003.
About the Station
Location: Idaho, United States, 43.72 latitude, -113.55 longitude.
Elevation: 1,829 m (6,001 ft).
Period of record: 1932 to 2004, 73 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 Grouse. 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 Grouse, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.0 C (50.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-40.0 C (-40.0 F)
n/a
n/a
Mar
17.8 C (64.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Apr
26.1 C (79.0 F)
-23.3 C (-9.9 F)
n/a
n/a
May
30.0 C (86.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Jun
31.7 C (89.1 F)
-7.8 C (18.0 F)
n/a
n/a
Jul
35.0 C (95.0 F)
-6.1 C (21.0 F)
n/a
n/a
Aug
35.0 C (95.0 F)
-6.1 C (21.0 F)
n/a
n/a
Sep
32.8 C (91.0 F)
-12.8 C (9.0 F)
n/a
n/a
Oct
26.7 C (80.1 F)
-24.4 C (-11.9 F)
n/a
n/a
Nov
20.0 C (68.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Dec
13.3 C (55.9 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 Grouse still stand. 1985 holds the most, with 52.
Standing records at Grouse by the year they were set
Year set
Standing records
1946
12
1947
30
1948
38
1949
42
1950
35
1951
20
1952
38
1953
19
1954
28
1955
37
1956
32
1957
14
1958
28
1959
19
1960
40
1961
21
1962
35
1963
37
1964
29
1965
20
1966
21
1967
25
1968
17
1969
31
1970
28
1971
29
1972
41
1973
22
1974
31
1975
30
1976
16
1977
32
1978
13
1979
21
1980
21
1981
21
1982
45
1983
31
1984
30
1985
52
1986
38
1987
23
1988
16
1989
20
1990
26
1991
17
1992
28
1993
23
1994
22
1995
23
1996
11
1997
2
1998
7
1999
23
2000
7
2001
8
2002
27
2003
12
All-Time Record Progression
4 new records
4 all-time records were set at Grouse between 21 December 1983 and 1 August 2000. Each dot is a new record.
When Grouse set new all-time records
Date
Kind
Detail
1983-12-21
Record low maximum temperature
Record low maximum temperature -23.3 C (-9.9 F)
1983-12-22
Record low maximum temperature
Record low maximum temperature -24.4 C (-11.9 F)
1985-07-17
Record high minimum temperature
Record high minimum temperature 16.7 C (62.1 F)
2000-08-01
Record high maximum temperature
Record high maximum temperature 35.0 C (95.0 F)
Wettest Day of Each Month
Jan: 76.2 mm (3.0 in)
The wettest day on record for each calendar month at Grouse. The most was 76.2 mm (3.0 in) on 23 January 1943.
Record daily precipitation for each month at Grouse
Month
Record daily precipitation (mm)
Date
Jan
76.2 mm (3.0 in)
23 January 1943
Feb
27.2 mm (1.1 in)
2 February 1945
Mar
30.7 mm (1.2 in)
20 March 1946
Apr
35.6 mm (1.4 in)
20 April 1981
May
31.2 mm (1.2 in)
15 May 1962
Jun
60.5 mm (2.4 in)
8 June 1944
Jul
40.6 mm (1.6 in)
17 July 1987
Aug
35.6 mm (1.4 in)
23 August 1946
Sep
43.2 mm (1.7 in)
11 September 1976
Oct
33.0 mm (1.3 in)
11 October 2000
Nov
35.8 mm (1.4 in)
19 November 1946
Dec
55.9 mm (2.2 in)
5 December 2003
Period of Record Coverage
1946 to 2004
Complete yearUnder 90 percent of days
59 years of record at Grouse, 1946 to 2004. 11 years have data for under 90 percent of days and are left out of rankings: 1946, 1988, 1996, 1997, 1998, 1999, 2000, 2001 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at Grouse, 1947 to 1994. Blue stripes are years cooler than the station's own mean of 2.8 C (37.0 F); red stripes are warmer. The coolest year was 1952, at 1.3 C (34.3 F), and the warmest was 1986, at 4.3 C (39.8 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Grouse as warming stripes, 1947 to 1994
Year
Annual mean temperature
Difference from the station mean
1947
2.9 C
+0.09 C
1948
1.9 C
-0.91 C
1949
2.3 C
-0.44 C
1950
2.5 C
-0.24 C
1951
1.8 C
-1.00 C
1952
1.3 C
-1.48 C
1953
3.7 C
+0.87 C
1954
3.4 C
+0.66 C
1955
2.0 C
-0.77 C
1956
2.6 C
-0.23 C
1957
2.6 C
-0.19 C
1958
3.4 C
+0.66 C
1959
3.0 C
+0.17 C
1960
2.7 C
-0.07 C
1961
3.9 C
+1.11 C
1962
2.8 C
-0.03 C
1963
3.7 C
+0.92 C
1964
1.4 C
-1.38 C
1965
2.1 C
-0.71 C
1966
2.2 C
-0.54 C
1967
2.7 C
-0.09 C
1968
2.2 C
-0.62 C
1969
2.7 C
-0.09 C
1970
2.7 C
-0.09 C
1971
1.9 C
-0.92 C
1972
2.6 C
-0.17 C
1973
2.6 C
-0.21 C
1974
3.8 C
+1.06 C
1975
2.2 C
-0.54 C
1976
3.8 C
+0.97 C
1977
4.0 C
+1.22 C
1978
2.9 C
+0.12 C
1979
3.1 C
+0.28 C
1980
2.9 C
+0.09 C
1981
4.0 C
+1.17 C
1982
2.1 C
-0.65 C
1983
2.9 C
+0.07 C
1984
1.7 C
-1.07 C
1985
1.9 C
-0.86 C
1986
4.3 C
+1.53 C
1989
2.9 C
+0.15 C
1990
3.2 C
+0.40 C
1991
3.4 C
+0.61 C
1992
4.1 C
+1.35 C
1993
1.4 C
-1.34 C
1994
3.7 C
+0.93 C
The fitted trend in annual mean temperature here over 1947 to 1994 is 0.15 C (-0.02 to 0.31) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.26 F (-0.04 to 0.56) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Grouse
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.15 C (-0.02 to 0.31) per decade
0.26 F (-0.04 to 0.56) per decade
1947 to 1994
46
Not clearly different from zero
Mean daily maximum
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.5 to 0.2) per decade
1947 to 1994
46
Not clearly different from zero
Mean daily minimum
0.4 C (0.2 to 0.6) per decade
0.7 F (0.3 to 1.0) per decade
1947 to 1994
46
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
1932 to 2004
Yearly extremes at Grouse: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.0 C (95.0 F)
2000
31.7 C (89.1 F)
59
Coldest night (TNn)
-41.1 C (-42.0 F)
1951
-33.3 C (-27.9 F)
59
Wettest day (Rx1day)
76.2 mm (3.0 in)
1943
25.4 mm (1.0 in)
73
Wettest five days (Rx5day)
120.4 mm (4.7 in)
1944
40.3 mm (1.6 in)
72
Longest dry spell (CDD)
88 days
1933
37 days
73
Hottest day (TXx)
The hottest day of the year at Grouse, 1932 to 2004. The record is 35.0 C (95.0 F) in 2000, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Grouse by year
Year
Hottest day (TXx)
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
31.7 C (89.1 F)
1947
31.7 C (89.1 F)
1948
31.7 C (89.1 F)
1949
32.8 C (91.0 F)
1950
32.8 C (91.0 F)
1951
31.1 C (88.0 F)
1952
28.9 C (84.0 F)
1953
31.1 C (88.0 F)
1954
32.2 C (90.0 F)
1955
32.2 C (90.0 F)
1956
30.6 C (87.1 F)
1957
30.6 C (87.1 F)
1958
32.2 C (90.0 F)
1959
33.3 C (91.9 F)
1960
33.9 C (93.0 F)
1961
33.9 C (93.0 F)
1962
31.1 C (88.0 F)
1963
29.4 C (84.9 F)
1964
30.0 C (86.0 F)
1965
28.9 C (84.0 F)
1966
33.9 C (93.0 F)
1967
34.4 C (93.9 F)
1968
31.7 C (89.1 F)
1969
33.9 C (93.0 F)
1970
31.1 C (88.0 F)
1971
31.7 C (89.1 F)
1972
33.3 C (91.9 F)
1973
34.4 C (93.9 F)
1974
31.7 C (89.1 F)
1975
31.7 C (89.1 F)
1976
31.7 C (89.1 F)
1977
32.2 C (90.0 F)
1978
31.7 C (89.1 F)
1979
32.2 C (90.0 F)
1980
31.7 C (89.1 F)
1981
31.1 C (88.0 F)
1982
32.2 C (90.0 F)
1983
31.7 C (89.1 F)
1984
31.1 C (88.0 F)
1985
33.9 C (93.0 F)
1986
34.4 C (93.9 F)
1987
32.2 C (90.0 F)
1988
23.3 C (73.9 F)
1989
31.7 C (89.1 F)
1990
33.3 C (91.9 F)
1991
32.2 C (90.0 F)
1992
33.3 C (91.9 F)
1993
27.8 C (82.0 F)
1994
32.8 C (91.0 F)
1995
30.6 C (87.1 F)
1996
25.0 C (77.0 F)
1997
25.0 C (77.0 F)
1998
32.2 C (90.0 F)
1999
30.6 C (87.1 F)
2000
35.0 C (95.0 F)
2001
33.3 C (91.9 F)
2002
35.0 C (95.0 F)
2003
35.0 C (95.0 F)
2004
2.8 C (37.0 F)
Coldest night (TNn)
The coldest night of the year at Grouse, 1932 to 2004. The record is -41.1 C (-42.0 F) in 1951, marked on the chart; the median year is -33.3 C (-27.9 F).
Coldest night (TNn) at Grouse by year
Year
Coldest night (TNn)
1932
n/a
1933
n/a
1934
n/a
1935
n/a
1936
n/a
1937
n/a
1938
n/a
1939
n/a
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
-29.4 C (-20.9 F)
1947
-30.6 C (-23.1 F)
1948
-35.6 C (-32.1 F)
1949
-38.9 C (-38.0 F)
1950
-37.2 C (-35.0 F)
1951
-41.1 C (-42.0 F)
1952
-37.2 C (-35.0 F)
1953
-25.6 C (-14.1 F)
1954
-28.9 C (-20.0 F)
1955
-33.3 C (-27.9 F)
1956
-40.0 C (-40.0 F)
1957
-37.8 C (-36.0 F)
1958
-30.0 C (-22.0 F)
1959
-37.2 C (-35.0 F)
1960
-36.7 C (-34.1 F)
1961
-34.4 C (-29.9 F)
1962
-40.6 C (-41.1 F)
1963
-39.4 C (-38.9 F)
1964
-37.2 C (-35.0 F)
1965
-36.1 C (-33.0 F)
1966
-31.1 C (-24.0 F)
1967
-33.3 C (-27.9 F)
1968
-34.4 C (-29.9 F)
1969
-33.3 C (-27.9 F)
1970
-35.6 C (-32.1 F)
1971
-40.0 C (-40.0 F)
1972
-38.9 C (-38.0 F)
1973
-32.2 C (-26.0 F)
1974
-32.2 C (-26.0 F)
1975
-32.2 C (-26.0 F)
1976
-31.1 C (-24.0 F)
1977
-30.0 C (-22.0 F)
1978
-38.3 C (-36.9 F)
1979
-36.7 C (-34.1 F)
1980
-36.1 C (-33.0 F)
1981
-31.7 C (-25.1 F)
1982
-36.7 C (-34.1 F)
1983
-41.1 C (-42.0 F)
1984
-38.9 C (-38.0 F)
1985
-37.2 C (-35.0 F)
1986
-31.7 C (-25.1 F)
1987
-28.3 C (-18.9 F)
1988
-32.8 C (-27.0 F)
1989
-32.8 C (-27.0 F)
1990
-39.4 C (-38.9 F)
1991
-27.8 C (-18.0 F)
1992
-31.1 C (-24.0 F)
1993
-32.8 C (-27.0 F)
1994
-28.3 C (-18.9 F)
1995
-31.1 C (-24.0 F)
1996
-31.7 C (-25.1 F)
1997
-23.3 C (-9.9 F)
1998
-32.8 C (-27.0 F)
1999
-29.4 C (-20.9 F)
2000
-21.1 C (-6.0 F)
2001
-29.4 C (-20.9 F)
2002
-33.3 C (-27.9 F)
2003
-27.8 C (-18.0 F)
2004
-27.8 C (-18.0 F)
Wettest day (Rx1day)
The wettest day of the year at Grouse, 1932 to 2004. The record is 76.2 mm (3.0 in) in 1943, marked on the chart; the median year is 25.4 mm (1.0 in).
Wettest day (Rx1day) at Grouse by year
Year
Wettest day (Rx1day)
1932
7.1 mm (0.28 in)
1933
16.0 mm (0.6 in)
1934
14.7 mm (0.6 in)
1935
24.4 mm (1.0 in)
1936
25.4 mm (1.0 in)
1937
34.3 mm (1.4 in)
1938
14.7 mm (0.6 in)
1939
16.0 mm (0.6 in)
1940
30.2 mm (1.2 in)
1941
30.7 mm (1.2 in)
1942
23.4 mm (0.9 in)
1943
76.2 mm (3.0 in)
1944
60.5 mm (2.4 in)
1945
27.2 mm (1.1 in)
1946
35.8 mm (1.4 in)
1947
20.6 mm (0.8 in)
1948
27.9 mm (1.1 in)
1949
19.8 mm (0.8 in)
1950
20.6 mm (0.8 in)
1951
17.8 mm (0.7 in)
1952
31.8 mm (1.3 in)
1953
11.2 mm (0.4 in)
1954
29.5 mm (1.2 in)
1955
48.3 mm (1.9 in)
1956
21.6 mm (0.9 in)
1957
26.4 mm (1.0 in)
1958
23.1 mm (0.9 in)
1959
30.0 mm (1.2 in)
1960
25.4 mm (1.0 in)
1961
24.1 mm (0.9 in)
1962
31.2 mm (1.2 in)
1963
46.0 mm (1.8 in)
1964
31.2 mm (1.2 in)
1965
29.2 mm (1.1 in)
1966
20.1 mm (0.8 in)
1967
29.2 mm (1.1 in)
1968
34.3 mm (1.4 in)
1969
45.7 mm (1.8 in)
1970
18.5 mm (0.7 in)
1971
26.4 mm (1.0 in)
1972
17.5 mm (0.7 in)
1973
19.1 mm (0.8 in)
1974
22.9 mm (0.9 in)
1975
14.5 mm (0.6 in)
1976
43.2 mm (1.7 in)
1977
30.5 mm (1.2 in)
1978
30.0 mm (1.2 in)
1979
19.1 mm (0.8 in)
1980
24.4 mm (1.0 in)
1981
35.6 mm (1.4 in)
1982
25.4 mm (1.0 in)
1983
76.2 mm (3.0 in)
1984
24.6 mm (1.0 in)
1985
43.2 mm (1.7 in)
1986
20.3 mm (0.8 in)
1987
40.6 mm (1.6 in)
1988
31.0 mm (1.2 in)
1989
19.6 mm (0.8 in)
1990
29.2 mm (1.1 in)
1991
29.7 mm (1.2 in)
1992
18.5 mm (0.7 in)
1993
37.1 mm (1.5 in)
1994
16.5 mm (0.6 in)
1995
45.5 mm (1.8 in)
1996
15.0 mm (0.6 in)
1997
16.0 mm (0.6 in)
1998
25.4 mm (1.0 in)
1999
16.3 mm (0.6 in)
2000
33.0 mm (1.3 in)
2001
28.4 mm (1.1 in)
2002
20.8 mm (0.8 in)
2003
55.9 mm (2.2 in)
2004
0.0 mm (0.00 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grouse, 1932 to 2004. The record is 120.4 mm (4.7 in) in 1944, marked on the chart; the median year is 40.3 mm (1.6 in).
Wettest five days (Rx5day) at Grouse by year
Year
Wettest five days (Rx5day)
1932
13.5 mm (0.5 in)
1933
37.6 mm (1.5 in)
1934
17.7 mm (0.7 in)
1935
32.8 mm (1.3 in)
1936
38.1 mm (1.5 in)
1937
56.9 mm (2.2 in)
1938
31.6 mm (1.2 in)
1939
16.8 mm (0.7 in)
1940
35.8 mm (1.4 in)
1941
65.9 mm (2.6 in)
1942
29.8 mm (1.2 in)
1943
76.2 mm (3.0 in)
1944
120.4 mm (4.7 in)
1945
45.0 mm (1.8 in)
1946
61.7 mm (2.4 in)
1947
28.0 mm (1.1 in)
1948
30.9 mm (1.2 in)
1949
34.8 mm (1.4 in)
1950
34.0 mm (1.3 in)
1951
34.0 mm (1.3 in)
1952
44.0 mm (1.7 in)
1953
19.1 mm (0.8 in)
1954
38.9 mm (1.5 in)
1955
96.9 mm (3.8 in)
1956
34.3 mm (1.4 in)
1957
44.0 mm (1.7 in)
1958
40.9 mm (1.6 in)
1959
43.5 mm (1.7 in)
1960
28.5 mm (1.1 in)
1961
30.5 mm (1.2 in)
1962
65.3 mm (2.6 in)
1963
61.0 mm (2.4 in)
1964
103.8 mm (4.1 in)
1965
67.3 mm (2.6 in)
1966
39.1 mm (1.5 in)
1967
43.7 mm (1.7 in)
1968
61.2 mm (2.4 in)
1969
90.1 mm (3.5 in)
1970
42.9 mm (1.7 in)
1971
36.9 mm (1.5 in)
1972
29.0 mm (1.1 in)
1973
33.4 mm (1.3 in)
1974
51.3 mm (2.0 in)
1975
39.7 mm (1.6 in)
1976
43.2 mm (1.7 in)
1977
42.0 mm (1.7 in)
1978
50.3 mm (2.0 in)
1979
31.8 mm (1.3 in)
1980
47.5 mm (1.9 in)
1981
58.5 mm (2.3 in)
1982
55.9 mm (2.2 in)
1983
77.2 mm (3.0 in)
1984
58.5 mm (2.3 in)
1985
55.9 mm (2.2 in)
1986
50.9 mm (2.0 in)
1987
57.6 mm (2.3 in)
1988
45.8 mm (1.8 in)
1989
22.0 mm (0.9 in)
1990
43.7 mm (1.7 in)
1991
42.4 mm (1.7 in)
1992
38.3 mm (1.5 in)
1993
79.8 mm (3.1 in)
1994
21.8 mm (0.9 in)
1995
46.0 mm (1.8 in)
1996
20.3 mm (0.8 in)
1997
9.1 mm (0.36 in)
1998
23.6 mm (0.9 in)
1999
39.4 mm (1.6 in)
2000
33.0 mm (1.3 in)
2001
33.7 mm (1.3 in)
2002
27.5 mm (1.1 in)
2003
26.4 mm (1.0 in)
2004
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Grouse, 1932 to 2004. The record is 88 days in 1933, marked on the chart; the median year is 37 days.
Longest dry spell (CDD) at Grouse by year
Year
Longest dry spell (CDD)
1932
32 days
1933
88 days
1934
55 days
1935
83 days
1936
58 days
1937
35 days
1938
57 days
1939
54 days
1940
34 days
1941
31 days
1942
87 days
1943
65 days
1944
26 days
1945
39 days
1946
35 days
1947
36 days
1948
40 days
1949
57 days
1950
42 days
1951
33 days
1952
61 days
1953
55 days
1954
43 days
1955
37 days
1956
44 days
1957
26 days
1958
41 days
1959
62 days
1960
51 days
1961
42 days
1962
35 days
1963
22 days
1964
63 days
1965
67 days
1966
44 days
1967
37 days
1968
37 days
1969
37 days
1970
32 days
1971
29 days
1972
23 days
1973
32 days
1974
37 days
1975
22 days
1976
61 days
1977
49 days
1978
51 days
1979
25 days
1980
35 days
1981
59 days
1982
26 days
1983
34 days
1984
29 days
1985
23 days
1986
40 days
1987
68 days
1988
45 days
1989
35 days
1990
25 days
1991
31 days
1992
35 days
1993
41 days
1994
53 days
1995
35 days
1996
19 days
1997
37 days
1998
20 days
1999
57 days
2000
22 days
2001
60 days
2002
78 days
2003
37 days
2004
3 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
46 years with a frost
Across 46 years with a frost, the median last spring frost at Grouse falls on 28 June and the median first autumn frost on 4 July, which leaves a median of 9 days between them.
Fitted over all years, the growing season changes by +5.2 days per decade at this station.
Frost dates and growing season at Grouse
Measure
Median, all years
Earliest period
Recent period (1963 to 1994)
Recent against earliest
Fitted trend
Last spring frost
28 June
n/a
25 June
n/a
-2.1 days per decade
First autumn frost
4 July
n/a
5 July
n/a
+3.1 days per decade
Growing days
9 days
n/a
13 days
n/a
+5.2 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
63 years, 1933 to 2002
A day with at least 25.8 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 77.8 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Grouse: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
25.8 mm (1.0 in)
5 years
36.3 mm (1.4 in)
10 years
44.4 mm (1.7 in)
25 years
56.3 mm (2.2 in)
50 years
66.5 mm (2.6 in)
100 years
77.8 mm (3.1 in)
Longer than the 63 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, 63 years of values from 1933 to 2002.
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: 76.2 mm (3.0 in) in 1943; 76.2 mm (3.0 in) in 1983; 60.5 mm (2.4 in) in 1944.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Grouse standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grouse 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.