Record envelope, standing records and threshold days for Elliston (USC00242738), Montana, United States, with 112 years of record.
Key Facts for Elliston
Elliston (USC00242738) is a weather station in Montana, United States at 46.56 latitude and -112.43 longitude, 1,548 m (5,080 ft) above sea level.
The station reports from 1909 to 2020, 112 years of record.
1,464 records set at Elliston still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Elliston set a daily record high minimum temperature of 8.3 C (46.9 F) on 20 September 2020.
About the Station
Location: Montana, United States, 46.56 latitude, -112.43 longitude.
Elevation: 1,548 m (5,080 ft).
Period of record: 1909 to 2020, 112 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 Elliston. 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 Elliston, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.9 C (57.0 F)
-40.6 C (-41.1 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-40.6 C (-41.1 F)
n/a
n/a
Mar
22.8 C (73.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Apr
27.2 C (81.0 F)
-19.4 C (-2.9 F)
n/a
n/a
May
31.7 C (89.1 F)
-12.8 C (9.0 F)
n/a
n/a
Jun
35.6 C (96.1 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
37.8 C (100.0 F)
-4.4 C (24.1 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-4.4 C (24.1 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-15.0 C (5.0 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Dec
13.3 C (55.9 F)
-41.7 C (-43.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Elliston still stand. 1963 holds the most, with 54.
Standing records at Elliston by the year they were set
Year set
Standing records
1920
3
1951
22
1952
29
1953
43
1954
41
1955
46
1956
35
1957
42
1958
42
1959
31
1960
37
1961
39
1962
43
1963
54
1964
27
1965
32
1966
38
1967
24
1968
33
1969
43
1970
33
1971
30
1972
45
1973
32
1974
33
1975
42
1976
15
1977
14
2001
14
2002
28
2003
36
2004
28
2005
36
2006
36
2007
38
2008
31
2009
30
2010
14
2011
8
2013
26
2014
27
2015
38
2016
22
2017
30
2018
25
2019
28
2020
21
All-Time Record Progression
2 new records
2 all-time records were set at Elliston between 26 April 1975 and 26 April 1975. Each dot is a new record.
When Elliston set new all-time records
Date
Kind
Detail
1975-04-26
Record daily precipitation
Record daily precipitation 52.3 mm (2.1 in)
1975-04-26
Record daily snowfall
Record daily snowfall 63.5 cm (25.0 in)
Wettest Day of Each Month
Apr: 52.3 mm (2.1 in)
The wettest day on record for each calendar month at Elliston. The most was 52.3 mm (2.1 in) on 26 April 1975.
Record daily precipitation for each month at Elliston
Month
Record daily precipitation (mm)
Date
Jan
50.8 mm (2.0 in)
18 January 1913
Feb
20.3 mm (0.8 in)
22 February 2003
Mar
30.5 mm (1.2 in)
9 March 2017
Apr
52.3 mm (2.1 in)
26 April 1975
May
52.3 mm (2.1 in)
18 May 2017
Jun
44.7 mm (1.8 in)
4 June 2001
Jul
39.4 mm (1.6 in)
7 July 1969
Aug
40.4 mm (1.6 in)
20 August 1974
Sep
50.8 mm (2.0 in)
3 September 1909
Oct
45.7 mm (1.8 in)
17 October 1917
Nov
25.4 mm (1.0 in)
12 November 2008
Dec
32.0 mm (1.3 in)
30 December 2017
Period of Record Coverage
1920 to 2020
Complete yearUnder 90 percent of days
47 years of record at Elliston, 1920 to 2020. 11 years have data for under 90 percent of days and are left out of rankings: 1920, 1951, 1977, 2001, 2002, 2003, 2005, 2010 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Elliston, 1952 to 2018. Blue stripes are years cooler than the station's own mean of 4.4 C (39.9 F); red stripes are warmer. The coolest year was 1955, at 2.4 C (36.2 F), and the warmest was 1953, at 5.6 C (42.1 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Elliston as warming stripes, 1952 to 2018
Year
Annual mean temperature
Difference from the station mean
1952
4.0 C
-0.35 C
1953
5.6 C
+1.26 C
1954
4.4 C
+0.02 C
1955
2.4 C
-2.02 C
1956
3.9 C
-0.46 C
1957
3.7 C
-0.65 C
1958
4.9 C
+0.56 C
1959
3.9 C
-0.48 C
1960
4.4 C
+0.02 C
1961
5.2 C
+0.80 C
1962
4.4 C
+0.01 C
1963
5.1 C
+0.74 C
1964
3.7 C
-0.71 C
1965
3.9 C
-0.51 C
1966
4.7 C
+0.31 C
1967
4.6 C
+0.27 C
1968
4.0 C
-0.34 C
1969
4.5 C
+0.16 C
1970
4.4 C
-0.02 C
1971
4.3 C
-0.05 C
1972
3.9 C
-0.43 C
1973
4.3 C
-0.06 C
1974
4.7 C
+0.34 C
1975
2.6 C
-1.81 C
2002
3.7 C
-0.72 C
2003
5.5 C
+1.13 C
2004
5.3 C
+0.96 C
2005
4.9 C
+0.52 C
2006
5.6 C
+1.20 C
2007
5.5 C
+1.13 C
2008
3.8 C
-0.57 C
2009
3.8 C
-0.56 C
2017
4.7 C
+0.33 C
2018
4.2 C
-0.18 C
The fitted trend in annual mean temperature here over 1952 to 2018 is 0.08 C (-0.04 to 0.21) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.4) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Elliston
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.08 C (-0.04 to 0.21) per decade
0.1 F (-0.1 to 0.4) per decade
1952 to 2018
34
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1952 to 2018
34
Not clearly different from zero
Mean daily minimum
0.09 C (-0.03 to 0.20) per decade
0.2 F (-0.1 to 0.4) per decade
1952 to 2018
34
Not clearly different from zero
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
1909 to 2020
Yearly extremes at Elliston: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1961
34.4 C (93.9 F)
47
Coldest night (TNn)
-41.7 C (-43.1 F)
1964
-32.2 C (-26.0 F)
47
Wettest day (Rx1day)
52.3 mm (2.1 in)
1975
30.1 mm (1.2 in)
58
Wettest five days (Rx5day)
94.7 mm (3.7 in)
1969
46.4 mm (1.8 in)
58
Longest dry spell (CDD)
47 days
1919
25 days
58
Hottest day (TXx)
The hottest day of the year at Elliston, 1909 to 2020. The record is 37.8 C (100.0 F) in 1961, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Elliston by year
Year
Hottest day (TXx)
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
35.0 C (95.0 F)
1951
32.2 C (90.0 F)
1952
32.8 C (91.0 F)
1953
36.1 C (97.0 F)
1954
33.3 C (91.9 F)
1955
33.3 C (91.9 F)
1956
32.2 C (90.0 F)
1957
34.4 C (93.9 F)
1958
32.2 C (90.0 F)
1959
34.4 C (93.9 F)
1960
36.7 C (98.1 F)
1961
37.8 C (100.0 F)
1962
32.2 C (90.0 F)
1963
33.9 C (93.0 F)
1964
32.2 C (90.0 F)
1965
35.0 C (95.0 F)
1966
34.4 C (93.9 F)
1967
34.4 C (93.9 F)
1968
33.3 C (91.9 F)
1969
37.2 C (99.0 F)
1970
34.4 C (93.9 F)
1971
35.0 C (95.0 F)
1972
33.3 C (91.9 F)
1973
36.7 C (98.1 F)
1974
34.4 C (93.9 F)
1975
33.9 C (93.0 F)
1976
32.2 C (90.0 F)
1977
27.8 C (82.0 F)
2001
34.4 C (93.9 F)
2002
37.8 C (100.0 F)
2003
36.7 C (98.1 F)
2004
35.6 C (96.1 F)
2005
35.0 C (95.0 F)
2006
36.7 C (98.1 F)
2007
36.7 C (98.1 F)
2008
35.0 C (95.0 F)
2009
33.9 C (93.0 F)
2010
33.3 C (91.9 F)
2011
13.3 C (55.9 F)
2013
34.4 C (93.9 F)
2014
33.3 C (91.9 F)
2015
35.6 C (96.1 F)
2016
32.2 C (90.0 F)
2017
35.6 C (96.1 F)
2018
35.6 C (96.1 F)
2019
33.3 C (91.9 F)
2020
34.4 C (93.9 F)
Coldest night (TNn)
The coldest night of the year at Elliston, 1909 to 2020. The record is -41.7 C (-43.1 F) in 1964, marked on the chart; the median year is -32.2 C (-26.0 F).
Coldest night (TNn) at Elliston by year
Year
Coldest night (TNn)
1909
n/a
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
n/a
1919
n/a
1920
3.3 C (37.9 F)
1951
-28.9 C (-20.0 F)
1952
-31.1 C (-24.0 F)
1953
-26.7 C (-16.1 F)
1954
-35.6 C (-32.1 F)
1955
-34.4 C (-29.9 F)
1956
-40.6 C (-41.1 F)
1957
-38.9 C (-38.0 F)
1958
-31.1 C (-24.0 F)
1959
-40.0 C (-40.0 F)
1960
-32.8 C (-27.0 F)
1961
-35.6 C (-32.1 F)
1962
-38.9 C (-38.0 F)
1963
-40.6 C (-41.1 F)
1964
-41.7 C (-43.1 F)
1965
-31.7 C (-25.1 F)
1966
-30.6 C (-23.1 F)
1967
-29.4 C (-20.9 F)
1968
-37.8 C (-36.0 F)
1969
-33.3 C (-27.9 F)
1970
-32.2 C (-26.0 F)
1971
-31.1 C (-24.0 F)
1972
-37.2 C (-35.0 F)
1973
-33.3 C (-27.9 F)
1974
-35.6 C (-32.1 F)
1975
-35.0 C (-31.0 F)
1976
-33.3 C (-27.9 F)
1977
-30.0 C (-22.0 F)
2001
-23.9 C (-11.0 F)
2002
-28.9 C (-20.0 F)
2003
-34.4 C (-29.9 F)
2004
-37.2 C (-35.0 F)
2005
-32.2 C (-26.0 F)
2006
-33.3 C (-27.9 F)
2007
-31.1 C (-24.0 F)
2008
-31.7 C (-25.1 F)
2009
-33.3 C (-27.9 F)
2010
-31.7 C (-25.1 F)
2011
-30.6 C (-23.1 F)
2013
-25.6 C (-14.1 F)
2014
-36.7 C (-34.1 F)
2015
-26.7 C (-16.1 F)
2016
-35.6 C (-32.1 F)
2017
-31.7 C (-25.1 F)
2018
-32.2 C (-26.0 F)
2019
-32.2 C (-26.0 F)
2020
-21.7 C (-7.1 F)
Wettest day (Rx1day)
The wettest day of the year at Elliston, 1909 to 2020. The record is 52.3 mm (2.1 in) in 1975, marked on the chart; the median year is 30.1 mm (1.2 in).
Wettest day (Rx1day) at Elliston by year
Year
Wettest day (Rx1day)
1909
50.8 mm (2.0 in)
1910
18.3 mm (0.7 in)
1911
33.8 mm (1.3 in)
1912
36.8 mm (1.4 in)
1913
50.8 mm (2.0 in)
1914
34.3 mm (1.4 in)
1915
43.9 mm (1.7 in)
1916
31.2 mm (1.2 in)
1917
45.7 mm (1.8 in)
1918
25.4 mm (1.0 in)
1919
17.5 mm (0.7 in)
1920
26.7 mm (1.1 in)
1951
36.6 mm (1.4 in)
1952
30.5 mm (1.2 in)
1953
50.8 mm (2.0 in)
1954
21.6 mm (0.9 in)
1955
32.3 mm (1.3 in)
1956
19.6 mm (0.8 in)
1957
39.4 mm (1.6 in)
1958
25.4 mm (1.0 in)
1959
27.4 mm (1.1 in)
1960
20.1 mm (0.8 in)
1961
19.1 mm (0.8 in)
1962
21.6 mm (0.9 in)
1963
12.7 mm (0.5 in)
1964
31.8 mm (1.3 in)
1965
31.8 mm (1.3 in)
1966
15.7 mm (0.6 in)
1967
17.8 mm (0.7 in)
1968
23.4 mm (0.9 in)
1969
39.4 mm (1.6 in)
1970
31.8 mm (1.3 in)
1971
14.0 mm (0.6 in)
1972
11.9 mm (0.5 in)
1973
19.1 mm (0.8 in)
1974
40.4 mm (1.6 in)
1975
52.3 mm (2.1 in)
1976
31.8 mm (1.3 in)
1977
10.4 mm (0.4 in)
2001
44.7 mm (1.8 in)
2002
36.6 mm (1.4 in)
2003
29.7 mm (1.2 in)
2004
34.3 mm (1.4 in)
2005
39.9 mm (1.6 in)
2006
36.6 mm (1.4 in)
2007
44.5 mm (1.8 in)
2008
25.4 mm (1.0 in)
2009
22.9 mm (0.9 in)
2010
27.2 mm (1.1 in)
2011
10.9 mm (0.4 in)
2013
19.1 mm (0.8 in)
2014
28.7 mm (1.1 in)
2015
22.4 mm (0.9 in)
2016
17.8 mm (0.7 in)
2017
52.3 mm (2.1 in)
2018
36.8 mm (1.4 in)
2019
33.0 mm (1.3 in)
2020
17.5 mm (0.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Elliston, 1909 to 2020. The record is 94.7 mm (3.7 in) in 1969, marked on the chart; the median year is 46.4 mm (1.8 in).
Wettest five days (Rx5day) at Elliston by year
Year
Wettest five days (Rx5day)
1909
70.6 mm (2.8 in)
1910
34.4 mm (1.4 in)
1911
47.5 mm (1.9 in)
1912
69.6 mm (2.7 in)
1913
55.7 mm (2.2 in)
1914
64.2 mm (2.5 in)
1915
87.9 mm (3.5 in)
1916
68.8 mm (2.7 in)
1917
86.9 mm (3.4 in)
1918
35.5 mm (1.4 in)
1919
17.5 mm (0.7 in)
1920
26.7 mm (1.1 in)
1951
52.9 mm (2.1 in)
1952
39.9 mm (1.6 in)
1953
73.7 mm (2.9 in)
1954
44.0 mm (1.7 in)
1955
34.8 mm (1.4 in)
1956
38.4 mm (1.5 in)
1957
75.0 mm (3.0 in)
1958
60.4 mm (2.4 in)
1959
37.3 mm (1.5 in)
1960
50.8 mm (2.0 in)
1961
33.5 mm (1.3 in)
1962
37.3 mm (1.5 in)
1963
27.6 mm (1.1 in)
1964
66.4 mm (2.6 in)
1965
40.3 mm (1.6 in)
1966
26.6 mm (1.0 in)
1967
39.4 mm (1.6 in)
1968
45.2 mm (1.8 in)
1969
94.7 mm (3.7 in)
1970
61.1 mm (2.4 in)
1971
22.3 mm (0.9 in)
1972
18.7 mm (0.7 in)
1973
29.5 mm (1.2 in)
1974
42.2 mm (1.7 in)
1975
80.2 mm (3.2 in)
1976
50.8 mm (2.0 in)
1977
13.2 mm (0.5 in)
2001
47.8 mm (1.9 in)
2002
57.2 mm (2.3 in)
2003
39.2 mm (1.5 in)
2004
63.1 mm (2.5 in)
2005
86.3 mm (3.4 in)
2006
53.3 mm (2.1 in)
2007
71.4 mm (2.8 in)
2008
58.5 mm (2.3 in)
2009
29.8 mm (1.2 in)
2010
42.7 mm (1.7 in)
2011
11.7 mm (0.5 in)
2013
37.6 mm (1.5 in)
2014
59.2 mm (2.3 in)
2015
35.2 mm (1.4 in)
2016
44.9 mm (1.8 in)
2017
53.6 mm (2.1 in)
2018
73.3 mm (2.9 in)
2019
59.4 mm (2.3 in)
2020
42.8 mm (1.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Elliston, 1909 to 2020. The record is 47 days in 1919, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Elliston by year
Year
Longest dry spell (CDD)
1909
24 days
1910
23 days
1911
19 days
1912
12 days
1913
22 days
1914
22 days
1915
28 days
1916
15 days
1917
31 days
1918
42 days
1919
47 days
1920
18 days
1951
14 days
1952
32 days
1953
29 days
1954
33 days
1955
29 days
1956
26 days
1957
25 days
1958
17 days
1959
28 days
1960
32 days
1961
28 days
1962
20 days
1963
19 days
1964
25 days
1965
36 days
1966
21 days
1967
28 days
1968
22 days
1969
35 days
1970
25 days
1971
23 days
1972
24 days
1973
27 days
1974
40 days
1975
22 days
1976
25 days
1977
26 days
2001
33 days
2002
34 days
2003
24 days
2004
24 days
2005
30 days
2006
34 days
2007
27 days
2008
27 days
2009
21 days
2010
18 days
2011
3 days
2013
24 days
2014
20 days
2015
19 days
2016
16 days
2017
27 days
2018
18 days
2019
15 days
2020
24 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Elliston falls on 21 June and the median first autumn frost on 24 August, which leaves a median of 60 days between them.
Fitted over all years, the growing season changes by +6.0 days per decade at this station.
Frost dates and growing season at Elliston
Measure
Median, all years
Earliest period
Recent period (1956 to 2018)
Recent against earliest
Fitted trend
Last spring frost
21 June
n/a
20 June
n/a
-1.5 days per decade
First autumn frost
24 August
n/a
25 August
n/a
+4.5 days per decade
Growing days
60 days
n/a
65 days
n/a
+6.0 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, 1910 to 2018
A day with at least 28.9 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 61.3 mm (2.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Elliston: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
28.9 mm (1.1 in)
5 years
39.2 mm (1.5 in)
10 years
45.4 mm (1.8 in)
25 years
52.3 mm (2.1 in)
50 years
57.0 mm (2.2 in)
Longer than the 45 years of record
100 years
61.3 mm (2.4 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 1910 to 2018.
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: 52.3 mm (2.1 in) in 1975; 52.3 mm (2.1 in) in 2017; 50.8 mm (2.0 in) in 1913.
Download the Data
Data for Elliston standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Elliston 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.