Record envelope, standing records and threshold days for Jackson (USC00244447), Montana, United States, with 65 years of record.
Key Facts for Jackson
Jackson (USC00244447) is a weather station in Montana, United States at 45.37 latitude and -113.41 longitude, 1,975 m (6,480 ft) above sea level.
The station reports from 1949 to 2013, 65 years of record.
1,464 records set at Jackson still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Jackson set a daily record low maximum temperature of -5.0 C (23.0 F) on 22 March 2013.
About the Station
Location: Montana, United States, 45.37 latitude, -113.41 longitude.
Elevation: 1,975 m (6,480 ft).
Period of record: 1949 to 2013, 65 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 Jackson. 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 Jackson, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.2 C (54.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
13.3 C (55.9 F)
-40.6 C (-41.1 F)
n/a
n/a
Mar
18.3 C (64.9 F)
-32.2 C (-26.0 F)
n/a
n/a
Apr
23.9 C (75.0 F)
-24.4 C (-11.9 F)
n/a
n/a
May
30.0 C (86.0 F)
-15.0 C (5.0 F)
n/a
n/a
Jun
33.9 C (93.0 F)
-8.3 C (17.1 F)
n/a
n/a
Jul
33.3 C (91.9 F)
-6.7 C (19.9 F)
n/a
n/a
Aug
33.9 C (93.0 F)
-9.4 C (15.1 F)
n/a
n/a
Sep
31.1 C (88.0 F)
-16.7 C (1.9 F)
n/a
n/a
Oct
26.1 C (79.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Nov
18.9 C (66.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Dec
12.8 C (55.0 F)
-39.4 C (-38.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Jackson still stand. 2003 holds the most, with 43.
Standing records at Jackson by the year they were set
Year set
Standing records
1954
30
1955
39
1956
25
1957
28
1958
24
1959
35
1960
35
1961
32
1962
39
1963
33
1964
24
1965
38
1966
37
1967
26
1968
33
1969
39
1970
33
1971
19
1972
4
1973
7
1974
14
1979
11
1980
18
1981
18
1982
36
1983
41
1984
31
1985
26
1986
41
1987
3
1988
30
1989
35
1990
26
1991
25
1992
19
1993
31
1994
28
1995
32
1996
30
1997
25
1998
12
1999
22
2000
24
2001
25
2002
21
2003
43
2004
19
2005
27
2006
28
2007
24
2008
35
2009
23
2010
23
2011
14
2012
22
2013
2
All-Time Record Progression
3 new records
3 all-time records were set at Jackson between 28 July 1996 and 10 August 2012. Each dot is a new record.
When Jackson set new all-time records
Date
Kind
Detail
1996-07-28
Record high minimum temperature
Record high minimum temperature 16.1 C (61.0 F)
2000-01-11
Record daily snowfall
Record daily snowfall 35.6 cm (14.0 in)
2012-08-10
Record daily precipitation
Record daily precipitation 54.6 mm (2.1 in)
Wettest Day of Each Month
Aug: 54.6 mm (2.1 in)
The wettest day on record for each calendar month at Jackson. The most was 54.6 mm (2.1 in) on 10 August 2012.
Record daily precipitation for each month at Jackson
Month
Record daily precipitation (mm)
Date
Jan
20.3 mm (0.8 in)
19 January 1996
Feb
16.0 mm (0.6 in)
1 February 1963
Mar
17.3 mm (0.7 in)
12 March 1957
Apr
26.2 mm (1.0 in)
6 April 2006
May
29.2 mm (1.1 in)
28 May 1964
Jun
33.0 mm (1.3 in)
19 June 1964
Jul
45.7 mm (1.8 in)
10 July 1983
Aug
54.6 mm (2.1 in)
10 August 2012
Sep
51.8 mm (2.0 in)
2 September 1963
Oct
38.1 mm (1.5 in)
29 October 1992
Nov
30.2 mm (1.2 in)
25 November 1995
Dec
19.1 mm (0.8 in)
15 December 1977
Period of Record Coverage
1954 to 2013
Complete yearUnder 90 percent of days
57 years of record at Jackson, 1954 to 2013. 17 years have data for under 90 percent of days and are left out of rankings: 1954, 1971, 1972, 1973, 1974, 1975, 1979, 1980 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Jackson, 1955 to 2011. Blue stripes are years cooler than the station's own mean of 2.6 C (36.8 F); red stripes are warmer. The coolest year was 1993, at 1.3 C (34.3 F), and the warmest was 1958, at 3.7 C (38.6 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Jackson as warming stripes, 1955 to 2011
Year
Annual mean temperature
Difference from the station mean
1955
1.3 C
-1.36 C
1956
2.6 C
-0.08 C
1957
2.8 C
+0.17 C
1958
3.7 C
+1.00 C
1959
2.6 C
-0.09 C
1960
2.2 C
-0.47 C
1961
3.4 C
+0.71 C
1962
2.7 C
+0.04 C
1963
3.1 C
+0.43 C
1964
1.9 C
-0.76 C
1965
2.2 C
-0.47 C
1966
2.9 C
+0.23 C
1967
2.7 C
+0.02 C
1968
1.7 C
-0.92 C
1969
2.6 C
-0.01 C
1970
1.9 C
-0.72 C
1988
3.4 C
+0.76 C
1989
2.8 C
+0.16 C
1990
2.8 C
+0.12 C
1991
2.9 C
+0.21 C
1992
3.3 C
+0.64 C
1993
1.3 C
-1.37 C
1994
3.0 C
+0.33 C
1995
2.7 C
+0.02 C
1998
3.1 C
+0.48 C
1999
2.9 C
+0.28 C
2000
2.7 C
+0.01 C
2001
3.1 C
+0.44 C
2003
3.2 C
+0.56 C
2004
3.2 C
+0.50 C
2005
3.2 C
+0.51 C
2006
3.0 C
+0.38 C
2007
3.2 C
+0.52 C
2008
1.9 C
-0.80 C
2009
1.8 C
-0.84 C
2011
2.0 C
-0.64 C
The fitted trend in annual mean temperature here over 1955 to 2011 is 0.04 C (-0.06 to 0.15) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Jackson
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.06 to 0.15) per decade
0.1 F (-0.1 to 0.3) per decade
1955 to 2011
36
Not clearly different from zero
Mean daily maximum
-0.2 C (-0.3 to -0.1) per decade
-0.3 F (-0.6 to -0.1) per decade
1955 to 2011
36
Fall
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.7) per decade
1955 to 2011
36
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
1949 to 2013
Yearly extremes at Jackson: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
33.9 C (93.0 F)
1985
30.6 C (87.1 F)
57
Coldest night (TNn)
-40.6 C (-41.1 F)
1989
-32.2 C (-26.0 F)
57
Wettest day (Rx1day)
54.6 mm (2.1 in)
2012
21.2 mm (0.8 in)
64
Wettest five days (Rx5day)
79.0 mm (3.1 in)
1993
35.1 mm (1.4 in)
64
Longest dry spell (CDD)
82 days
1999
29 days
64
Hottest day (TXx)
The hottest day of the year at Jackson, 1949 to 2013. The record is 33.9 C (93.0 F) in 1985, marked on the chart; the median year is 30.6 C (87.1 F).
Hottest day (TXx) at Jackson by year
Year
Hottest day (TXx)
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
31.1 C (88.0 F)
1955
31.7 C (89.1 F)
1956
30.6 C (87.1 F)
1957
30.6 C (87.1 F)
1958
30.6 C (87.1 F)
1959
30.6 C (87.1 F)
1960
33.3 C (91.9 F)
1961
33.3 C (91.9 F)
1962
29.4 C (84.9 F)
1963
31.1 C (88.0 F)
1964
30.0 C (86.0 F)
1965
30.6 C (87.1 F)
1966
33.3 C (91.9 F)
1967
30.0 C (86.0 F)
1968
30.6 C (87.1 F)
1969
32.8 C (91.0 F)
1970
31.1 C (88.0 F)
1971
30.6 C (87.1 F)
1972
30.0 C (86.0 F)
1973
30.6 C (87.1 F)
1974
14.4 C (57.9 F)
1975
26.1 C (79.0 F)
1977
n/a
1978
n/a
1979
31.7 C (89.1 F)
1980
29.4 C (84.9 F)
1981
31.7 C (89.1 F)
1982
29.4 C (84.9 F)
1983
32.2 C (90.0 F)
1984
29.4 C (84.9 F)
1985
33.9 C (93.0 F)
1986
32.8 C (91.0 F)
1987
8.3 C (46.9 F)
1988
31.1 C (88.0 F)
1989
30.0 C (86.0 F)
1990
31.7 C (89.1 F)
1991
30.0 C (86.0 F)
1992
30.6 C (87.1 F)
1993
27.8 C (82.0 F)
1994
30.6 C (87.1 F)
1995
29.4 C (84.9 F)
1996
31.1 C (88.0 F)
1997
29.4 C (84.9 F)
1998
31.7 C (89.1 F)
1999
30.6 C (87.1 F)
2000
32.2 C (90.0 F)
2001
33.9 C (93.0 F)
2002
30.0 C (86.0 F)
2003
33.3 C (91.9 F)
2004
31.1 C (88.0 F)
2005
32.2 C (90.0 F)
2006
32.8 C (91.0 F)
2007
32.2 C (90.0 F)
2008
31.1 C (88.0 F)
2009
30.0 C (86.0 F)
2010
29.4 C (84.9 F)
2011
30.0 C (86.0 F)
2012
31.1 C (88.0 F)
2013
11.7 C (53.1 F)
Coldest night (TNn)
The coldest night of the year at Jackson, 1949 to 2013. The record is -40.6 C (-41.1 F) in 1989, marked on the chart; the median year is -32.2 C (-26.0 F).
Coldest night (TNn) at Jackson by year
Year
Coldest night (TNn)
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
-30.6 C (-23.1 F)
1955
-34.4 C (-29.9 F)
1956
-37.2 C (-35.0 F)
1957
-37.2 C (-35.0 F)
1958
-28.9 C (-20.0 F)
1959
-35.0 C (-31.0 F)
1960
-34.4 C (-29.9 F)
1961
-35.0 C (-31.0 F)
1962
-38.3 C (-36.9 F)
1963
-40.0 C (-40.0 F)
1964
-37.8 C (-36.0 F)
1965
-32.2 C (-26.0 F)
1966
-31.1 C (-24.0 F)
1967
-32.8 C (-27.0 F)
1968
-31.7 C (-25.1 F)
1969
-32.2 C (-26.0 F)
1970
-32.8 C (-27.0 F)
1971
-32.2 C (-26.0 F)
1972
-26.1 C (-15.0 F)
1973
-5.6 C (21.9 F)
1974
-13.3 C (8.1 F)
1975
-8.9 C (16.0 F)
1977
n/a
1978
n/a
1979
-26.1 C (-15.0 F)
1980
-36.7 C (-34.1 F)
1981
-22.8 C (-9.0 F)
1982
-38.9 C (-38.0 F)
1983
-38.3 C (-36.9 F)
1984
-32.8 C (-27.0 F)
1985
-30.0 C (-22.0 F)
1986
-26.1 C (-15.0 F)
1987
-25.6 C (-14.1 F)
1988
-30.0 C (-22.0 F)
1989
-40.6 C (-41.1 F)
1990
-39.4 C (-38.9 F)
1991
-29.4 C (-20.9 F)
1992
-31.7 C (-25.1 F)
1993
-35.6 C (-32.1 F)
1994
-25.0 C (-13.0 F)
1995
-31.7 C (-25.1 F)
1996
-35.6 C (-32.1 F)
1997
-37.2 C (-35.0 F)
1998
-35.0 C (-31.0 F)
1999
-25.0 C (-13.0 F)
2000
-26.7 C (-16.1 F)
2001
-30.0 C (-22.0 F)
2002
-28.9 C (-20.0 F)
2003
-37.2 C (-35.0 F)
2004
-32.2 C (-26.0 F)
2005
-33.3 C (-27.9 F)
2006
-33.9 C (-29.0 F)
2007
-35.6 C (-32.1 F)
2008
-32.8 C (-27.0 F)
2009
-33.9 C (-29.0 F)
2010
-32.2 C (-26.0 F)
2011
-30.6 C (-23.1 F)
2012
-24.4 C (-11.9 F)
2013
-31.1 C (-24.0 F)
Wettest day (Rx1day)
The wettest day of the year at Jackson, 1949 to 2013. The record is 54.6 mm (2.1 in) in 2012, marked on the chart; the median year is 21.2 mm (0.8 in).
Wettest day (Rx1day) at Jackson by year
Year
Wettest day (Rx1day)
1949
9.1 mm (0.36 in)
1950
19.8 mm (0.8 in)
1951
24.6 mm (1.0 in)
1952
17.5 mm (0.7 in)
1953
29.5 mm (1.2 in)
1954
17.0 mm (0.7 in)
1955
22.4 mm (0.9 in)
1956
11.7 mm (0.5 in)
1957
18.0 mm (0.7 in)
1958
19.8 mm (0.8 in)
1959
26.4 mm (1.0 in)
1960
15.0 mm (0.6 in)
1961
27.7 mm (1.1 in)
1962
13.2 mm (0.5 in)
1963
51.8 mm (2.0 in)
1964
33.0 mm (1.3 in)
1965
21.6 mm (0.9 in)
1966
26.9 mm (1.1 in)
1967
23.6 mm (0.9 in)
1968
28.7 mm (1.1 in)
1969
24.4 mm (1.0 in)
1970
20.8 mm (0.8 in)
1971
22.9 mm (0.9 in)
1972
15.2 mm (0.6 in)
1973
21.1 mm (0.8 in)
1974
3.3 mm (0.13 in)
1975
7.6 mm (0.30 in)
1977
19.1 mm (0.8 in)
1978
9.7 mm (0.38 in)
1979
11.2 mm (0.4 in)
1980
23.1 mm (0.9 in)
1981
16.0 mm (0.6 in)
1982
18.8 mm (0.7 in)
1983
45.7 mm (1.8 in)
1984
22.4 mm (0.9 in)
1985
24.9 mm (1.0 in)
1986
17.5 mm (0.7 in)
1987
4.1 mm (0.16 in)
1988
24.1 mm (0.9 in)
1989
18.5 mm (0.7 in)
1990
16.3 mm (0.6 in)
1991
18.8 mm (0.7 in)
1992
40.6 mm (1.6 in)
1993
38.1 mm (1.5 in)
1994
14.0 mm (0.6 in)
1995
30.2 mm (1.2 in)
1996
26.7 mm (1.1 in)
1997
20.3 mm (0.8 in)
1998
22.9 mm (0.9 in)
1999
11.2 mm (0.4 in)
2000
21.3 mm (0.8 in)
2001
30.0 mm (1.2 in)
2002
22.1 mm (0.9 in)
2003
12.7 mm (0.5 in)
2004
12.7 mm (0.5 in)
2005
22.6 mm (0.9 in)
2006
26.2 mm (1.0 in)
2007
23.4 mm (0.9 in)
2008
22.9 mm (0.9 in)
2009
18.8 mm (0.7 in)
2010
22.4 mm (0.9 in)
2011
20.3 mm (0.8 in)
2012
54.6 mm (2.1 in)
2013
6.1 mm (0.24 in)
Wettest five days (Rx5day)
The wettest five days of the year at Jackson, 1949 to 2013. The record is 79.0 mm (3.1 in) in 1993, marked on the chart; the median year is 35.1 mm (1.4 in).
Wettest five days (Rx5day) at Jackson by year
Year
Wettest five days (Rx5day)
1949
16.4 mm (0.6 in)
1950
25.2 mm (1.0 in)
1951
31.0 mm (1.2 in)
1952
32.8 mm (1.3 in)
1953
55.0 mm (2.2 in)
1954
26.6 mm (1.0 in)
1955
32.5 mm (1.3 in)
1956
22.1 mm (0.9 in)
1957
39.4 mm (1.6 in)
1958
39.0 mm (1.5 in)
1959
41.1 mm (1.6 in)
1960
27.1 mm (1.1 in)
1961
38.1 mm (1.5 in)
1962
25.1 mm (1.0 in)
1963
70.3 mm (2.8 in)
1964
55.8 mm (2.2 in)
1965
45.0 mm (1.8 in)
1966
43.4 mm (1.7 in)
1967
55.4 mm (2.2 in)
1968
45.4 mm (1.8 in)
1969
35.1 mm (1.4 in)
1970
32.5 mm (1.3 in)
1971
47.6 mm (1.9 in)
1972
24.3 mm (1.0 in)
1973
37.6 mm (1.5 in)
1974
9.1 mm (0.36 in)
1975
14.7 mm (0.6 in)
1977
36.8 mm (1.4 in)
1978
17.4 mm (0.7 in)
1979
22.2 mm (0.9 in)
1980
39.1 mm (1.5 in)
1981
38.9 mm (1.5 in)
1982
13.2 mm (0.5 in)
1983
46.0 mm (1.8 in)
1984
30.8 mm (1.2 in)
1985
31.7 mm (1.2 in)
1986
35.9 mm (1.4 in)
1987
6.6 mm (0.26 in)
1988
30.3 mm (1.2 in)
1989
25.6 mm (1.0 in)
1990
34.8 mm (1.4 in)
1991
32.0 mm (1.3 in)
1992
58.2 mm (2.3 in)
1993
79.0 mm (3.1 in)
1994
21.3 mm (0.8 in)
1995
45.7 mm (1.8 in)
1996
40.7 mm (1.6 in)
1997
39.4 mm (1.6 in)
1998
27.4 mm (1.1 in)
1999
30.8 mm (1.2 in)
2000
34.5 mm (1.4 in)
2001
44.4 mm (1.7 in)
2002
24.6 mm (1.0 in)
2003
26.7 mm (1.1 in)
2004
35.1 mm (1.4 in)
2005
38.6 mm (1.5 in)
2006
37.9 mm (1.5 in)
2007
36.1 mm (1.4 in)
2008
26.7 mm (1.1 in)
2009
35.1 mm (1.4 in)
2010
44.0 mm (1.7 in)
2011
38.9 mm (1.5 in)
2012
54.6 mm (2.1 in)
2013
6.1 mm (0.24 in)
Longest dry spell (CDD)
The longest dry spell of the year at Jackson, 1949 to 2013. The record is 82 days in 1999, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Jackson by year
Year
Longest dry spell (CDD)
1949
43 days
1950
27 days
1951
34 days
1952
48 days
1953
37 days
1954
34 days
1955
31 days
1956
18 days
1957
33 days
1958
18 days
1959
20 days
1960
26 days
1961
44 days
1962
28 days
1963
21 days
1964
17 days
1965
22 days
1966
36 days
1967
32 days
1968
22 days
1969
28 days
1970
31 days
1971
48 days
1972
25 days
1973
10 days
1974
6 days
1975
13 days
1977
24 days
1978
37 days
1979
25 days
1980
22 days
1981
22 days
1982
15 days
1983
32 days
1984
20 days
1985
19 days
1986
25 days
1987
8 days
1988
39 days
1989
31 days
1990
19 days
1991
46 days
1992
31 days
1993
19 days
1994
58 days
1995
23 days
1996
29 days
1997
29 days
1998
40 days
1999
82 days
2000
21 days
2001
36 days
2002
25 days
2003
36 days
2004
47 days
2005
34 days
2006
51 days
2007
36 days
2008
40 days
2009
36 days
2010
36 days
2011
60 days
2012
27 days
2013
22 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Jackson falls on 28 June and the median first autumn frost on 8 July, which leaves a median of 12 days between them.
Fitted over all years, the growing season changes by +7.4 days per decade at this station.
Frost dates and growing season at Jackson
Measure
Median, all years
Earliest period
Recent period (1961 to 2011)
Recent against earliest
Fitted trend
Last spring frost
28 June
n/a
26 June
n/a
-1.5 days per decade
First autumn frost
8 July
n/a
13 July
n/a
+6.0 days per decade
Growing days
12 days
n/a
17 days
n/a
+7.4 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
45 years, 1950 to 2012
A day with at least 21.5 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 54.8 mm (2.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Jackson: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
21.5 mm (0.8 in)
5 years
29.3 mm (1.2 in)
10 years
34.9 mm (1.4 in)
25 years
42.5 mm (1.7 in)
50 years
48.5 mm (1.9 in)
Longer than the 45 years of record
100 years
54.8 mm (2.2 in)
Longer than the 45 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, 45 years of values from 1950 to 2012.
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: 54.6 mm (2.1 in) in 2012; 51.8 mm (2.0 in) in 1963; 40.6 mm (1.6 in) in 1992.
Download the Data
Data for Jackson standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jackson 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.