Record envelope, standing records and threshold days for Deer Lodge (USC00242273), Montana, United States, with 67 years of record.
Key Facts for Deer Lodge
Deer Lodge (USC00242273) is a weather station in Montana, United States at 46.38 latitude and -112.73 longitude, 1,382 m (4,534 ft) above sea level.
The station reports from 1893 to 1959, 67 years of record.
1,464 records set at Deer Lodge still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Deer Lodge tied a daily record snow depth of 20.3 cm (8.0 in) on 5 February 1959.
About the Station
Location: Montana, United States, 46.38 latitude, -112.73 longitude.
Elevation: 1,382 m (4,534 ft).
Period of record: 1893 to 1959, 67 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 Deer Lodge. 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 Deer Lodge, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
15.6 C (60.1 F)
-39.4 C (-38.9 F)
n/a
n/a
Feb
20.6 C (69.1 F)
-40.6 C (-41.1 F)
n/a
n/a
Mar
22.8 C (73.0 F)
-33.3 C (-27.9 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-20.6 C (-5.1 F)
n/a
n/a
May
34.4 C (93.9 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
37.8 C (100.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
42.2 C (108.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
39.4 C (102.9 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-9.4 C (15.1 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-25.6 C (-14.1 F)
n/a
n/a
Nov
20.6 C (69.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Dec
18.9 C (66.0 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 Deer Lodge still stand. 1919 holds the most, with 64.
Standing records at Deer Lodge by the year they were set
Year set
Standing records
1893
19
1894
14
1895
28
1896
37
1897
15
1898
9
1899
59
1900
2
1901
44
1902
22
1903
19
1904
9
1905
14
1906
17
1916
52
1917
39
1918
47
1919
64
1920
25
1921
34
1922
25
1923
21
1924
12
1928
5
1929
40
1930
7
1931
42
1932
43
1933
36
1934
32
1935
31
1936
61
1937
29
1938
18
1939
28
1940
27
1941
27
1942
22
1943
26
1944
23
1945
25
1946
20
1947
23
1948
21
1949
31
1950
29
1951
27
1952
18
1953
27
1954
25
1955
29
1956
19
1957
26
1958
17
1959
3
Wettest Day of Each Month
May: 50.8 mm (2.0 in)
The wettest day on record for each calendar month at Deer Lodge. The most was 50.8 mm (2.0 in) on 19 May 1938.
Record daily precipitation for each month at Deer Lodge
Month
Record daily precipitation (mm)
Date
Jan
20.3 mm (0.8 in)
6 January 1923
Feb
25.4 mm (1.0 in)
11 February 1931
Mar
19.3 mm (0.8 in)
22 March 1920
Apr
25.4 mm (1.0 in)
22 April 1899
May
50.8 mm (2.0 in)
19 May 1938
Jun
43.7 mm (1.7 in)
12 June 1921
Jul
38.1 mm (1.5 in)
13 July 1901
Aug
44.7 mm (1.8 in)
21 August 1933
Sep
38.1 mm (1.5 in)
3 September 1901
Oct
38.1 mm (1.5 in)
2 October 1893
Nov
38.1 mm (1.5 in)
23 November 1921
Dec
17.8 mm (0.7 in)
31 December 1920
Period of Record Coverage
1893 to 1959
Complete yearUnder 90 percent of days
55 years of record at Deer Lodge, 1893 to 1959. 17 years have data for under 90 percent of days and are left out of rankings: 1893, 1894, 1895, 1896, 1897, 1898, 1900, 1901 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Deer Lodge, 1899 to 1958. Blue stripes are years cooler than the station's own mean of 5.7 C (42.3 F); red stripes are warmer. The coolest year was 1955, at 4.3 C (39.8 F), and the warmest was 1934, at 8.0 C (46.5 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Deer Lodge as warming stripes, 1899 to 1958
Year
Annual mean temperature
Difference from the station mean
1899
4.8 C
-0.91 C
1903
4.4 C
-1.31 C
1904
5.5 C
-0.22 C
1917
4.4 C
-1.26 C
1920
5.1 C
-0.64 C
1922
4.4 C
-1.26 C
1929
4.4 C
-1.28 C
1931
6.4 C
+0.68 C
1932
5.1 C
-0.56 C
1933
6.3 C
+0.55 C
1934
8.0 C
+2.33 C
1935
5.8 C
+0.05 C
1936
5.9 C
+0.19 C
1937
4.9 C
-0.77 C
1938
6.4 C
+0.70 C
1939
6.7 C
+0.99 C
1940
7.3 C
+1.56 C
1941
6.6 C
+0.86 C
1942
5.4 C
-0.33 C
1943
5.7 C
-0.01 C
1944
6.0 C
+0.32 C
1945
6.6 C
+0.88 C
1946
6.9 C
+1.20 C
1947
6.3 C
+0.61 C
1948
4.7 C
-1.05 C
1949
4.8 C
-0.94 C
1950
4.9 C
-0.82 C
1951
4.5 C
-1.20 C
1952
5.5 C
-0.19 C
1953
7.3 C
+1.59 C
1954
6.3 C
+0.60 C
1955
4.3 C
-1.38 C
1956
5.7 C
-0.05 C
1958
6.7 C
+0.97 C
The fitted trend in annual mean temperature here over 1899 to 1958 is 0.20 C (-0.02 to 0.42) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.36 F (-0.04 to 0.76) 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 Deer Lodge
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.20 C (-0.02 to 0.42) per decade
0.36 F (-0.04 to 0.76) per decade
1899 to 1958
34
Not clearly different from zero
Mean daily maximum
0.2 C (-0.1 to 0.4) per decade
0.3 F (-0.2 to 0.7) per decade
1899 to 1958
34
Not clearly different from zero
Mean daily minimum
0.25 C (0.02 to 0.48) per decade
0.45 F (0.03 to 0.87) per decade
1899 to 1958
34
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
1893 to 1959
Yearly extremes at Deer Lodge: 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)
1901
34.4 C (93.9 F)
55
Coldest night (TNn)
-41.1 C (-42.0 F)
1919
-32.8 C (-27.0 F)
55
Wettest day (Rx1day)
50.8 mm (2.0 in)
1938
19.8 mm (0.8 in)
57
Wettest five days (Rx5day)
85.1 mm (3.4 in)
1938
32.7 mm (1.3 in)
57
Longest dry spell (CDD)
93 days
1954
36 days
57
Hottest day (TXx)
The hottest day of the year at Deer Lodge, 1893 to 1959. The record is 42.2 C (108.0 F) in 1901, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Deer Lodge by year
Year
Hottest day (TXx)
1893
31.7 C (89.1 F)
1894
26.7 C (80.1 F)
1895
28.3 C (82.9 F)
1896
29.4 C (84.9 F)
1897
30.0 C (86.0 F)
1898
16.1 C (61.0 F)
1899
36.1 C (97.0 F)
1900
15.6 C (60.1 F)
1901
42.2 C (108.0 F)
1902
30.0 C (86.0 F)
1903
31.1 C (88.0 F)
1904
31.1 C (88.0 F)
1905
26.7 C (80.1 F)
1906
25.6 C (78.1 F)
1912
n/a
1913
n/a
1916
31.7 C (89.1 F)
1917
34.4 C (93.9 F)
1918
33.3 C (91.9 F)
1919
39.4 C (102.9 F)
1920
34.4 C (93.9 F)
1921
35.0 C (95.0 F)
1922
33.3 C (91.9 F)
1923
34.4 C (93.9 F)
1924
26.7 C (80.1 F)
1928
26.1 C (79.0 F)
1929
37.8 C (100.0 F)
1930
34.4 C (93.9 F)
1931
36.7 C (98.1 F)
1932
34.4 C (93.9 F)
1933
37.2 C (99.0 F)
1934
36.1 C (97.0 F)
1935
36.7 C (98.1 F)
1936
37.8 C (100.0 F)
1937
36.1 C (97.0 F)
1938
32.2 C (90.0 F)
1939
35.6 C (96.1 F)
1940
37.2 C (99.0 F)
1941
35.0 C (95.0 F)
1942
34.4 C (93.9 F)
1943
33.3 C (91.9 F)
1944
32.8 C (91.0 F)
1945
34.4 C (93.9 F)
1946
35.0 C (95.0 F)
1947
34.4 C (93.9 F)
1948
33.9 C (93.0 F)
1949
35.6 C (96.1 F)
1950
33.3 C (91.9 F)
1951
33.9 C (93.0 F)
1952
33.9 C (93.0 F)
1953
36.1 C (97.0 F)
1954
36.1 C (97.0 F)
1955
36.1 C (97.0 F)
1956
33.9 C (93.0 F)
1957
31.7 C (89.1 F)
1958
34.4 C (93.9 F)
1959
11.1 C (52.0 F)
Coldest night (TNn)
The coldest night of the year at Deer Lodge, 1893 to 1959. The record is -41.1 C (-42.0 F) in 1919, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Deer Lodge by year
Year
Coldest night (TNn)
1893
-31.7 C (-25.1 F)
1894
-35.6 C (-32.1 F)
1895
-36.1 C (-33.0 F)
1896
-34.4 C (-29.9 F)
1897
-36.1 C (-33.0 F)
1898
-26.1 C (-15.0 F)
1899
-40.6 C (-41.1 F)
1900
-18.9 C (-2.0 F)
1901
-32.8 C (-27.0 F)
1902
-36.1 C (-33.0 F)
1903
-30.6 C (-23.1 F)
1904
-23.3 C (-9.9 F)
1905
-37.2 C (-35.0 F)
1906
-28.9 C (-20.0 F)
1912
n/a
1913
n/a
1916
-35.6 C (-32.1 F)
1917
-32.8 C (-27.0 F)
1918
-35.6 C (-32.1 F)
1919
-41.1 C (-42.0 F)
1920
-33.3 C (-27.9 F)
1921
-31.1 C (-24.0 F)
1922
-30.6 C (-23.1 F)
1923
-30.0 C (-22.0 F)
1924
-31.7 C (-25.1 F)
1928
-25.6 C (-14.1 F)
1929
-38.3 C (-36.9 F)
1930
-18.3 C (-0.9 F)
1931
-24.4 C (-11.9 F)
1932
-37.2 C (-35.0 F)
1933
-38.3 C (-36.9 F)
1934
-23.9 C (-11.0 F)
1935
-34.4 C (-29.9 F)
1936
-38.3 C (-36.9 F)
1937
-36.7 C (-34.1 F)
1938
-30.0 C (-22.0 F)
1939
-33.3 C (-27.9 F)
1940
-24.4 C (-11.9 F)
1941
-26.7 C (-16.1 F)
1942
-37.2 C (-35.0 F)
1943
-35.0 C (-31.0 F)
1944
-31.7 C (-25.1 F)
1945
-28.9 C (-20.0 F)
1946
-26.1 C (-15.0 F)
1947
-27.2 C (-17.0 F)
1948
-28.9 C (-20.0 F)
1949
-36.7 C (-34.1 F)
1950
-31.7 C (-25.1 F)
1951
-35.6 C (-32.1 F)
1952
-26.1 C (-15.0 F)
1953
-22.8 C (-9.0 F)
1954
-35.6 C (-32.1 F)
1955
-32.8 C (-27.0 F)
1956
-34.4 C (-29.9 F)
1957
-39.4 C (-38.9 F)
1958
-23.3 C (-9.9 F)
1959
-31.7 C (-25.1 F)
Wettest day (Rx1day)
The wettest day of the year at Deer Lodge, 1893 to 1959. The record is 50.8 mm (2.0 in) in 1938, marked on the chart; the median year is 19.8 mm (0.8 in).
Wettest day (Rx1day) at Deer Lodge by year
Year
Wettest day (Rx1day)
1893
38.1 mm (1.5 in)
1894
15.2 mm (0.6 in)
1895
8.9 mm (0.35 in)
1896
19.1 mm (0.8 in)
1897
11.4 mm (0.4 in)
1898
17.8 mm (0.7 in)
1899
25.4 mm (1.0 in)
1900
0.5 mm (0.02 in)
1901
38.1 mm (1.5 in)
1902
1.3 mm (0.05 in)
1903
25.4 mm (1.0 in)
1904
0.3 mm (0.01 in)
1905
5.6 mm (0.22 in)
1906
11.4 mm (0.4 in)
1912
14.0 mm (0.6 in)
1913
29.0 mm (1.1 in)
1916
19.8 mm (0.8 in)
1917
22.9 mm (0.9 in)
1918
29.2 mm (1.1 in)
1919
11.4 mm (0.4 in)
1920
19.3 mm (0.8 in)
1921
49.5 mm (1.9 in)
1922
33.0 mm (1.3 in)
1923
27.9 mm (1.1 in)
1924
9.9 mm (0.39 in)
1928
5.1 mm (0.20 in)
1929
11.9 mm (0.5 in)
1930
17.8 mm (0.7 in)
1931
25.4 mm (1.0 in)
1932
17.3 mm (0.7 in)
1933
44.7 mm (1.8 in)
1934
22.9 mm (0.9 in)
1935
15.2 mm (0.6 in)
1936
13.7 mm (0.5 in)
1937
25.7 mm (1.0 in)
1938
50.8 mm (2.0 in)
1939
19.8 mm (0.8 in)
1940
15.7 mm (0.6 in)
1941
22.4 mm (0.9 in)
1942
25.4 mm (1.0 in)
1943
17.3 mm (0.7 in)
1944
34.8 mm (1.4 in)
1945
19.8 mm (0.8 in)
1946
26.2 mm (1.0 in)
1947
41.4 mm (1.6 in)
1948
14.0 mm (0.6 in)
1949
29.5 mm (1.2 in)
1950
23.6 mm (0.9 in)
1951
24.4 mm (1.0 in)
1952
21.8 mm (0.9 in)
1953
31.8 mm (1.3 in)
1954
12.2 mm (0.5 in)
1955
22.1 mm (0.9 in)
1956
19.1 mm (0.8 in)
1957
21.8 mm (0.9 in)
1958
15.7 mm (0.6 in)
1959
14.5 mm (0.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Deer Lodge, 1893 to 1959. The record is 85.1 mm (3.4 in) in 1938, marked on the chart; the median year is 32.7 mm (1.3 in).
Wettest five days (Rx5day) at Deer Lodge by year
Year
Wettest five days (Rx5day)
1893
58.5 mm (2.3 in)
1894
18.5 mm (0.7 in)
1895
21.8 mm (0.9 in)
1896
27.0 mm (1.1 in)
1897
16.0 mm (0.6 in)
1898
30.0 mm (1.2 in)
1899
36.8 mm (1.4 in)
1900
0.5 mm (0.02 in)
1901
63.5 mm (2.5 in)
1902
1.6 mm (0.06 in)
1903
38.7 mm (1.5 in)
1904
0.3 mm (0.01 in)
1905
15.8 mm (0.6 in)
1906
15.5 mm (0.6 in)
1912
27.4 mm (1.1 in)
1913
38.1 mm (1.5 in)
1916
38.4 mm (1.5 in)
1917
33.1 mm (1.3 in)
1918
31.5 mm (1.2 in)
1919
19.0 mm (0.7 in)
1920
42.9 mm (1.7 in)
1921
51.1 mm (2.0 in)
1922
39.6 mm (1.6 in)
1923
52.4 mm (2.1 in)
1924
14.8 mm (0.6 in)
1928
8.4 mm (0.33 in)
1929
16.3 mm (0.6 in)
1930
24.7 mm (1.0 in)
1931
26.5 mm (1.0 in)
1932
32.2 mm (1.3 in)
1933
50.8 mm (2.0 in)
1934
35.1 mm (1.4 in)
1935
22.8 mm (0.9 in)
1936
24.3 mm (1.0 in)
1937
35.4 mm (1.4 in)
1938
85.1 mm (3.4 in)
1939
43.2 mm (1.7 in)
1940
19.6 mm (0.8 in)
1941
51.6 mm (2.0 in)
1942
45.3 mm (1.8 in)
1943
21.8 mm (0.9 in)
1944
53.3 mm (2.1 in)
1945
39.3 mm (1.5 in)
1946
33.6 mm (1.3 in)
1947
53.5 mm (2.1 in)
1948
28.3 mm (1.1 in)
1949
51.3 mm (2.0 in)
1950
32.7 mm (1.3 in)
1951
37.6 mm (1.5 in)
1952
27.4 mm (1.1 in)
1953
52.2 mm (2.1 in)
1954
24.4 mm (1.0 in)
1955
36.6 mm (1.4 in)
1956
30.6 mm (1.2 in)
1957
40.1 mm (1.6 in)
1958
42.1 mm (1.7 in)
1959
20.9 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Deer Lodge, 1893 to 1959. The record is 93 days in 1954, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Deer Lodge by year
Year
Longest dry spell (CDD)
1893
29 days
1894
31 days
1895
61 days
1896
21 days
1897
24 days
1898
18 days
1899
15 days
1900
31 days
1901
41 days
1902
23 days
1903
40 days
1904
35 days
1905
53 days
1906
51 days
1912
27 days
1913
26 days
1916
55 days
1917
32 days
1918
50 days
1919
52 days
1920
31 days
1921
50 days
1922
54 days
1923
43 days
1924
26 days
1928
51 days
1929
37 days
1930
41 days
1931
42 days
1932
29 days
1933
28 days
1934
34 days
1935
77 days
1936
38 days
1937
46 days
1938
41 days
1939
42 days
1940
33 days
1941
44 days
1942
31 days
1943
29 days
1944
38 days
1945
30 days
1946
29 days
1947
30 days
1948
37 days
1949
39 days
1950
32 days
1951
18 days
1952
47 days
1953
36 days
1954
93 days
1955
49 days
1956
33 days
1957
45 days
1958
19 days
1959
14 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 Deer Lodge falls on 6 June and the median first autumn frost on 5 September, which leaves a median of 87 days between them.
Fitted over all years, the growing season changes by +5.6 days per decade at this station.
Frost dates and growing season at Deer Lodge
Measure
Median, all years
Earliest period
Recent period (1920 to 1958)
Recent against earliest
Fitted trend
Last spring frost
6 June
n/a
5 June
n/a
-1.9 days per decade
First autumn frost
5 September
n/a
6 September
n/a
+3.7 days per decade
Growing days
87 days
n/a
91 days
n/a
+5.6 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
33 years, 1917 to 1956
A day with at least 23.0 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 61.4 mm (2.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Deer Lodge: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
23.0 mm (0.9 in)
5 years
31.9 mm (1.3 in)
10 years
38.3 mm (1.5 in)
25 years
47.1 mm (1.9 in)
50 years
54.0 mm (2.1 in)
Longer than the 33 years of record
100 years
61.4 mm (2.4 in)
Longer than the 33 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, 33 years of values from 1917 to 1956.
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: 50.8 mm (2.0 in) in 1938; 49.5 mm (1.9 in) in 1921; 44.7 mm (1.8 in) in 1933.
Download the Data
Data for Deer Lodge standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Deer Lodge 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.