Record envelope, standing records and threshold days for Trout Creek 2 W (USC00248379), Montana, United States, with 49 years of record.
Key Facts for Trout Creek 2 W
Trout Creek 2 W (USC00248379) is a weather station in Montana, United States at 47.83 latitude and -115.63 longitude, 759 m (2,490 ft) above sea level.
The station reports from 1912 to 1960, 49 years of record.
1,464 records set at Trout Creek 2 W still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Trout Creek 2 W set a daily record low minimum temperature of -1.1 C (30.0 F) on 20 June 1960.
About the Station
Location: Montana, United States, 47.83 latitude, -115.63 longitude.
Elevation: 759 m (2,490 ft).
Period of record: 1912 to 1960, 49 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 Trout Creek 2 W. 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 Trout Creek 2 W, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.1 C (70.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-38.3 C (-36.9 F)
n/a
n/a
Mar
22.8 C (73.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-18.9 C (-2.0 F)
n/a
n/a
May
36.1 C (97.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-6.1 C (21.0 F)
n/a
n/a
Jul
41.7 C (107.1 F)
-2.8 C (27.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
-6.7 C (19.9 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-11.7 C (10.9 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-30.6 C (-23.1 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Trout Creek 2 W still stand. 1914 holds the most, with 90.
Standing records at Trout Creek 2 W by the year they were set
Year set
Standing records
1913
63
1914
90
1915
19
1916
54
1917
25
1918
44
1919
61
1920
29
1921
28
1922
36
1923
28
1924
79
1925
28
1926
36
1927
14
1928
15
1929
33
1930
45
1931
34
1932
23
1933
28
1934
39
1935
27
1936
45
1937
38
1938
31
1939
29
1940
32
1941
27
1942
18
1943
29
1944
21
1945
22
1946
20
1947
14
1948
13
1949
21
1950
32
1951
22
1952
21
1953
22
1954
16
1955
40
1956
14
1957
17
1958
6
1959
19
1960
17
All-Time Record Progression
1 new records
1 all-time records were set at Trout Creek 2 W between 22 January 1954 and 22 January 1954. Each dot is a new record.
When Trout Creek 2 W set new all-time records
Date
Kind
Detail
1954-01-22
Record snow depth
Record snow depth 129.5 cm (51.0 in)
Wettest Day of Each Month
Jun: 65.0 mm (2.6 in)
The wettest day on record for each calendar month at Trout Creek 2 W. The most was 65.0 mm (2.6 in) on 9 June 1933.
Record daily precipitation for each month at Trout Creek 2 W
Month
Record daily precipitation (mm)
Date
Jan
55.4 mm (2.2 in)
9 January 1953
Feb
48.5 mm (1.9 in)
9 February 1951
Mar
43.4 mm (1.7 in)
29 March 1934
Apr
28.2 mm (1.1 in)
3 April 1954
May
40.4 mm (1.6 in)
28 May 1917
Jun
65.0 mm (2.6 in)
9 June 1933
Jul
33.0 mm (1.3 in)
25 July 1925
Aug
25.9 mm (1.0 in)
29 August 1951
Sep
36.8 mm (1.4 in)
22 September 1944
Oct
45.0 mm (1.8 in)
9 October 1955
Nov
55.4 mm (2.2 in)
12 November 1930
Dec
47.0 mm (1.9 in)
2 December 1918
Period of Record Coverage
1913 to 1960
Complete yearUnder 90 percent of days
48 years of record at Trout Creek 2 W, 1913 to 1960. 18 years have data for under 90 percent of days and are left out of rankings: 1913, 1915, 1918, 1919, 1920, 1922, 1923, 1926 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 24 complete years at Trout Creek 2 W, 1914 to 1957. Blue stripes are years cooler than the station's own mean of 6.5 C (43.7 F); red stripes are warmer. The coolest year was 1924, at 4.3 C (39.8 F), and the warmest was 1914, at 9.4 C (48.8 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Trout Creek 2 W as warming stripes, 1914 to 1957
Year
Annual mean temperature
Difference from the station mean
1914
9.4 C
+2.86 C
1916
5.1 C
-1.44 C
1924
4.3 C
-2.16 C
1925
7.8 C
+1.27 C
1927
5.8 C
-0.67 C
1928
6.4 C
-0.14 C
1929
4.7 C
-1.76 C
1930
6.1 C
-0.41 C
1933
6.6 C
+0.08 C
1934
9.0 C
+2.53 C
1935
6.2 C
-0.34 C
1936
6.1 C
-0.37 C
1937
6.2 C
-0.34 C
1938
7.6 C
+1.12 C
1943
5.9 C
-0.57 C
1944
7.1 C
+0.55 C
1945
7.2 C
+0.65 C
1950
5.7 C
-0.80 C
1951
5.7 C
-0.80 C
1952
6.9 C
+0.38 C
1953
8.1 C
+1.59 C
1954
6.4 C
-0.08 C
1955
5.4 C
-1.14 C
1957
6.4 C
-0.12 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
1912 to 1960
Yearly extremes at Trout Creek 2 W: 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)
1914
37.8 C (100.0 F)
48
Coldest night (TNn)
-40.0 C (-40.0 F)
1937
-28.0 C (-18.5 F)
48
Wettest day (Rx1day)
65.0 mm (2.6 in)
1933
35.6 mm (1.4 in)
49
Wettest five days (Rx5day)
156.0 mm (6.1 in)
1933
75.0 mm (3.0 in)
49
Longest dry spell (CDD)
63 days
1929
32 days
49
Hottest day (TXx)
The hottest day of the year at Trout Creek 2 W, 1912 to 1960. The record is 42.2 C (108.0 F) in 1914, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Trout Creek 2 W by year
Year
Hottest day (TXx)
1912
n/a
1913
41.1 C (106.0 F)
1914
42.2 C (108.0 F)
1915
36.7 C (98.1 F)
1916
35.6 C (96.1 F)
1917
36.7 C (98.1 F)
1918
38.3 C (100.9 F)
1919
39.4 C (102.9 F)
1920
36.7 C (98.1 F)
1921
35.6 C (96.1 F)
1922
37.8 C (100.0 F)
1923
37.8 C (100.0 F)
1924
41.1 C (106.0 F)
1925
38.9 C (102.0 F)
1926
37.8 C (100.0 F)
1927
37.2 C (99.0 F)
1928
40.0 C (104.0 F)
1929
40.0 C (104.0 F)
1930
40.6 C (105.1 F)
1931
38.3 C (100.9 F)
1932
37.2 C (99.0 F)
1933
37.8 C (100.0 F)
1934
40.0 C (104.0 F)
1935
37.8 C (100.0 F)
1936
38.3 C (100.9 F)
1937
36.1 C (97.0 F)
1938
37.2 C (99.0 F)
1939
39.4 C (102.9 F)
1940
41.7 C (107.1 F)
1941
40.0 C (104.0 F)
1942
37.2 C (99.0 F)
1943
34.4 C (93.9 F)
1944
37.8 C (100.0 F)
1945
37.2 C (99.0 F)
1946
37.8 C (100.0 F)
1947
36.1 C (97.0 F)
1948
33.3 C (91.9 F)
1949
36.7 C (98.1 F)
1950
37.8 C (100.0 F)
1951
37.8 C (100.0 F)
1952
37.2 C (99.0 F)
1953
38.9 C (102.0 F)
1954
35.6 C (96.1 F)
1955
37.2 C (99.0 F)
1956
37.2 C (99.0 F)
1957
36.7 C (98.1 F)
1958
37.2 C (99.0 F)
1959
38.3 C (100.9 F)
1960
30.6 C (87.1 F)
Coldest night (TNn)
The coldest night of the year at Trout Creek 2 W, 1912 to 1960. The record is -40.0 C (-40.0 F) in 1937, marked on the chart; the median year is -28.0 C (-18.5 F).
Coldest night (TNn) at Trout Creek 2 W by year
Year
Coldest night (TNn)
1912
n/a
1913
-22.8 C (-9.0 F)
1914
-31.1 C (-24.0 F)
1915
-27.2 C (-17.0 F)
1916
-31.7 C (-25.1 F)
1917
-31.7 C (-25.1 F)
1918
-28.3 C (-18.9 F)
1919
-33.9 C (-29.0 F)
1920
-17.8 C (0.0 F)
1921
-24.4 C (-11.9 F)
1922
-35.0 C (-31.0 F)
1923
-27.8 C (-18.0 F)
1924
-39.4 C (-38.9 F)
1925
-15.0 C (5.0 F)
1926
-22.8 C (-9.0 F)
1927
-34.4 C (-29.9 F)
1928
-23.3 C (-9.9 F)
1929
-35.6 C (-32.1 F)
1930
-31.1 C (-24.0 F)
1931
-25.0 C (-13.0 F)
1932
-28.3 C (-18.9 F)
1933
-38.3 C (-36.9 F)
1934
-12.8 C (9.0 F)
1935
-33.9 C (-29.0 F)
1936
-38.3 C (-36.9 F)
1937
-40.0 C (-40.0 F)
1938
-20.6 C (-5.1 F)
1939
-25.0 C (-13.0 F)
1940
-24.4 C (-11.9 F)
1941
-17.8 C (0.0 F)
1942
-27.8 C (-18.0 F)
1943
-29.4 C (-20.9 F)
1944
-26.7 C (-16.1 F)
1945
-21.1 C (-6.0 F)
1946
-22.8 C (-9.0 F)
1947
-23.9 C (-11.0 F)
1948
-28.3 C (-18.9 F)
1949
-35.0 C (-31.0 F)
1950
-37.2 C (-35.0 F)
1951
-29.4 C (-20.9 F)
1952
-27.8 C (-18.0 F)
1953
-14.4 C (6.1 F)
1954
-26.7 C (-16.1 F)
1955
-27.8 C (-18.0 F)
1956
-29.4 C (-20.9 F)
1957
-35.6 C (-32.1 F)
1958
-18.9 C (-2.0 F)
1959
-30.6 C (-23.1 F)
1960
-28.3 C (-18.9 F)
Wettest day (Rx1day)
The wettest day of the year at Trout Creek 2 W, 1912 to 1960. The record is 65.0 mm (2.6 in) in 1933, marked on the chart; the median year is 35.6 mm (1.4 in).
Wettest day (Rx1day) at Trout Creek 2 W by year
Year
Wettest day (Rx1day)
1912
33.0 mm (1.3 in)
1913
30.7 mm (1.2 in)
1914
35.6 mm (1.4 in)
1915
24.1 mm (0.9 in)
1916
43.9 mm (1.7 in)
1917
42.9 mm (1.7 in)
1918
47.0 mm (1.9 in)
1919
44.5 mm (1.8 in)
1920
33.0 mm (1.3 in)
1921
31.8 mm (1.3 in)
1922
35.6 mm (1.4 in)
1923
45.7 mm (1.8 in)
1924
33.8 mm (1.3 in)
1925
35.6 mm (1.4 in)
1926
32.3 mm (1.3 in)
1927
39.1 mm (1.5 in)
1928
30.5 mm (1.2 in)
1929
28.4 mm (1.1 in)
1930
55.4 mm (2.2 in)
1931
30.5 mm (1.2 in)
1932
47.0 mm (1.9 in)
1933
65.0 mm (2.6 in)
1934
43.4 mm (1.7 in)
1935
35.6 mm (1.4 in)
1936
29.7 mm (1.2 in)
1937
27.9 mm (1.1 in)
1938
24.4 mm (1.0 in)
1939
31.0 mm (1.2 in)
1940
27.9 mm (1.1 in)
1941
31.0 mm (1.2 in)
1942
37.6 mm (1.5 in)
1943
33.5 mm (1.3 in)
1944
36.8 mm (1.4 in)
1945
26.7 mm (1.1 in)
1946
47.0 mm (1.9 in)
1947
30.5 mm (1.2 in)
1948
33.0 mm (1.3 in)
1949
38.1 mm (1.5 in)
1950
46.7 mm (1.8 in)
1951
48.5 mm (1.9 in)
1952
24.1 mm (0.9 in)
1953
55.4 mm (2.2 in)
1954
45.7 mm (1.8 in)
1955
45.0 mm (1.8 in)
1956
33.0 mm (1.3 in)
1957
31.8 mm (1.3 in)
1958
36.1 mm (1.4 in)
1959
41.1 mm (1.6 in)
1960
27.9 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Trout Creek 2 W, 1912 to 1960. The record is 156.0 mm (6.1 in) in 1933, marked on the chart; the median year is 75.0 mm (3.0 in).
Wettest five days (Rx5day) at Trout Creek 2 W by year
Year
Wettest five days (Rx5day)
1912
110.9 mm (4.4 in)
1913
47.8 mm (1.9 in)
1914
58.7 mm (2.3 in)
1915
38.4 mm (1.5 in)
1916
76.1 mm (3.0 in)
1917
114.5 mm (4.5 in)
1918
89.6 mm (3.5 in)
1919
84.5 mm (3.3 in)
1920
62.4 mm (2.5 in)
1921
64.7 mm (2.5 in)
1922
64.9 mm (2.6 in)
1923
78.2 mm (3.1 in)
1924
61.7 mm (2.4 in)
1925
86.4 mm (3.4 in)
1926
57.1 mm (2.2 in)
1927
82.2 mm (3.2 in)
1928
57.1 mm (2.2 in)
1929
82.8 mm (3.3 in)
1930
83.3 mm (3.3 in)
1931
55.9 mm (2.2 in)
1932
75.7 mm (3.0 in)
1933
156.0 mm (6.1 in)
1934
105.9 mm (4.2 in)
1935
79.5 mm (3.1 in)
1936
73.0 mm (2.9 in)
1937
75.0 mm (3.0 in)
1938
54.9 mm (2.2 in)
1939
90.4 mm (3.6 in)
1940
70.8 mm (2.8 in)
1941
69.4 mm (2.7 in)
1942
55.4 mm (2.2 in)
1943
58.6 mm (2.3 in)
1944
50.0 mm (2.0 in)
1945
52.7 mm (2.1 in)
1946
130.8 mm (5.1 in)
1947
74.5 mm (2.9 in)
1948
78.7 mm (3.1 in)
1949
85.4 mm (3.4 in)
1950
129.0 mm (5.1 in)
1951
119.1 mm (4.7 in)
1952
44.4 mm (1.7 in)
1953
106.5 mm (4.2 in)
1954
73.3 mm (2.9 in)
1955
88.7 mm (3.5 in)
1956
74.6 mm (2.9 in)
1957
82.6 mm (3.3 in)
1958
52.3 mm (2.1 in)
1959
93.2 mm (3.7 in)
1960
46.8 mm (1.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Trout Creek 2 W, 1912 to 1960. The record is 63 days in 1929, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at Trout Creek 2 W by year
Year
Longest dry spell (CDD)
1912
9 days
1913
33 days
1914
60 days
1915
12 days
1916
24 days
1917
42 days
1918
33 days
1919
46 days
1920
36 days
1921
23 days
1922
33 days
1923
31 days
1924
26 days
1925
31 days
1926
34 days
1927
12 days
1928
32 days
1929
63 days
1930
24 days
1931
32 days
1932
36 days
1933
25 days
1934
45 days
1935
27 days
1936
39 days
1937
25 days
1938
38 days
1939
41 days
1940
40 days
1941
21 days
1942
30 days
1943
33 days
1944
17 days
1945
27 days
1946
42 days
1947
26 days
1948
25 days
1949
16 days
1950
19 days
1951
48 days
1952
46 days
1953
35 days
1954
23 days
1955
45 days
1956
44 days
1957
25 days
1958
19 days
1959
38 days
1960
15 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
24 years with a frost
Across 24 years with a frost, the median last spring frost at Trout Creek 2 W falls on 16 June and the median first autumn frost on 16 August, which leaves a median of 61 days between them.
Frost dates and growing season at Trout Creek 2 W
Measure
Median, all years
Earliest period
Recent period (1914 to 1957)
Recent against earliest
Fitted trend
Last spring frost
16 June
n/a
16 June
n/a
n/a
First autumn frost
16 August
n/a
16 August
n/a
n/a
Growing days
61 days
n/a
61 days
n/a
n/a
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
39 years, 1914 to 1959
A day with at least 36.6 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 67.1 mm (2.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Trout Creek 2 W: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
36.6 mm (1.4 in)
5 years
45.1 mm (1.8 in)
10 years
50.6 mm (2.0 in)
25 years
57.4 mm (2.3 in)
50 years
62.3 mm (2.5 in)
Longer than the 39 years of record
100 years
67.1 mm (2.6 in)
Longer than the 39 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, 39 years of values from 1914 to 1959.
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: 65.0 mm (2.6 in) in 1933; 55.4 mm (2.2 in) in 1930; 55.4 mm (2.2 in) in 1953.
Download the Data
Data for Trout Creek 2 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Trout Creek 2 W 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.