Record envelope, standing records and threshold days for East Anaconda (USC00242604), Montana, United States, with 76 years of record.
Key Facts for East Anaconda
East Anaconda (USC00242604) is a weather station in Montana, United States at 46.10 latitude and -112.92 longitude, 1,681 m (5,515 ft) above sea level.
The station reports from 1905 to 1980, 76 years of record.
1,464 records set at East Anaconda still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
East Anaconda tied a daily record low maximum temperature of 15.6 C (60.1 F) on 14 July 1980.
About the Station
Location: Montana, United States, 46.10 latitude, -112.92 longitude.
Elevation: 1,681 m (5,515 ft).
Period of record: 1905 to 1980, 76 years.
Eligible elements: tmax, tmin, prcp, snow.
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 East Anaconda. 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 East Anaconda, 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)
-35.6 C (-32.1 F)
n/a
n/a
Feb
14.4 C (57.9 F)
-37.2 C (-35.0 F)
n/a
n/a
Mar
19.4 C (66.9 F)
-27.8 C (-18.0 F)
n/a
n/a
Apr
28.9 C (84.0 F)
-22.8 C (-9.0 F)
n/a
n/a
May
32.2 C (90.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-4.4 C (24.1 F)
n/a
n/a
Jul
37.2 C (99.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-2.2 C (28.0 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-15.0 C (5.0 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-35.0 C (-31.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at East Anaconda still stand. 1936 holds the most, with 48.
Standing records at East Anaconda by the year they were set
Year set
Standing records
1905
8
1906
30
1907
26
1908
20
1909
10
1910
38
1911
10
1912
15
1913
16
1914
16
1915
12
1916
36
1917
14
1918
45
1919
40
1920
16
1921
29
1922
19
1923
8
1924
33
1925
17
1926
17
1927
12
1928
20
1929
15
1930
24
1931
24
1932
28
1933
19
1934
28
1935
22
1936
48
1937
18
1938
11
1939
22
1940
20
1941
15
1942
8
1943
16
1944
8
1945
15
1946
10
1947
17
1948
12
1949
19
1950
33
1951
21
1952
13
1953
29
1954
23
1955
29
1956
16
1957
16
1958
16
1959
11
1960
26
1961
17
1962
28
1963
23
1964
17
1965
25
1966
21
1967
15
1968
19
1969
17
1970
12
1971
11
1972
24
1973
9
1974
18
1975
26
1976
4
1977
12
1978
17
1979
6
1980
4
All-Time Record Progression
5 new records
5 all-time records were set at East Anaconda between 7 February 1936 and 15 January 1977. Each dot is a new record.
When East Anaconda set new all-time records
Date
Kind
Detail
1936-02-07
Record low minimum temperature
Record low minimum temperature -37.2 C (-35.0 F)
1938-05-18
Record daily precipitation
Record daily precipitation 52.1 mm (2.1 in)
1938-05-18
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
1940-08-12
Record high maximum temperature
Record high maximum temperature 37.8 C (100.0 F)
1977-01-15
Record daily snowfall
Record daily snowfall 45.7 cm (18.0 in)
Wettest Day of Each Month
May: 52.1 mm (2.1 in)
The wettest day on record for each calendar month at East Anaconda. The most was 52.1 mm (2.1 in) on 18 May 1938.
Record daily precipitation for each month at East Anaconda
Month
Record daily precipitation (mm)
Date
Jan
35.6 mm (1.4 in)
9 January 1918
Feb
31.8 mm (1.3 in)
24 February 1917
Mar
21.6 mm (0.9 in)
27 March 1909
Apr
32.8 mm (1.3 in)
30 April 1915
May
52.1 mm (2.1 in)
18 May 1938
Jun
46.7 mm (1.8 in)
4 June 1948
Jul
46.7 mm (1.8 in)
26 July 1909
Aug
33.5 mm (1.3 in)
3 August 1943
Sep
40.4 mm (1.6 in)
20 September 1968
Oct
45.7 mm (1.8 in)
10 October 1911
Nov
38.1 mm (1.5 in)
4 November 1918
Dec
38.1 mm (1.5 in)
9 December 1929
Period of Record Coverage
1905 to 1980
Complete yearUnder 90 percent of days
76 years of record at East Anaconda, 1905 to 1980. 4 years have data for under 90 percent of days and are left out of rankings: 1905, 1917, 1932, 1980.
Cooler than the station meanWarmer than the station mean
One stripe for each of 70 complete years at East Anaconda, 1906 to 1978. Blue stripes are years cooler than the station's own mean of 5.8 C (42.5 F); red stripes are warmer. The coolest year was 1975, at 4.5 C (40.2 F), and the warmest was 1934, at 8.2 C (46.7 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at East Anaconda as warming stripes, 1906 to 1978
Year
Annual mean temperature
Difference from the station mean
1906
6.2 C
+0.36 C
1907
5.0 C
-0.86 C
1908
5.5 C
-0.38 C
1909
4.9 C
-0.91 C
1910
6.7 C
+0.83 C
1911
5.0 C
-0.87 C
1912
4.7 C
-1.16 C
1913
5.0 C
-0.81 C
1914
6.3 C
+0.42 C
1915
6.1 C
+0.30 C
1918
5.6 C
-0.27 C
1919
5.9 C
+0.09 C
1920
5.3 C
-0.57 C
1921
6.0 C
+0.18 C
1922
5.2 C
-0.61 C
1923
5.8 C
-0.02 C
1924
5.7 C
-0.16 C
1925
6.6 C
+0.77 C
1926
6.7 C
+0.81 C
1927
5.1 C
-0.73 C
1928
5.8 C
-0.04 C
1929
5.4 C
-0.43 C
1930
5.7 C
-0.16 C
1931
6.8 C
+0.98 C
1932
5.6 C
-0.23 C
1933
6.5 C
+0.68 C
1934
8.2 C
+2.31 C
1935
6.0 C
+0.11 C
1936
6.5 C
+0.63 C
1937
5.6 C
-0.26 C
1938
6.4 C
+0.58 C
1939
7.3 C
+1.44 C
1940
7.5 C
+1.61 C
1941
6.9 C
+1.04 C
1942
5.5 C
-0.38 C
1943
5.7 C
-0.17 C
1945
5.8 C
0.00 C
1946
6.1 C
+0.21 C
1947
6.1 C
+0.28 C
1948
4.7 C
-1.13 C
1949
5.5 C
-0.39 C
1950
5.1 C
-0.77 C
1951
4.6 C
-1.24 C
1952
6.6 C
+0.80 C
1953
7.6 C
+1.78 C
1954
6.8 C
+0.94 C
1955
4.7 C
-1.13 C
1956
6.3 C
+0.46 C
1957
5.9 C
+0.08 C
1958
7.0 C
+1.17 C
1959
5.4 C
-0.43 C
1960
6.1 C
+0.24 C
1961
6.7 C
+0.87 C
1962
5.3 C
-0.59 C
1963
6.2 C
+0.31 C
1964
4.9 C
-0.90 C
1965
5.0 C
-0.86 C
1966
5.8 C
-0.04 C
1967
6.2 C
+0.34 C
1968
4.9 C
-0.90 C
1969
5.8 C
-0.01 C
1970
5.6 C
-0.28 C
1971
5.3 C
-0.56 C
1972
4.9 C
-0.95 C
1973
5.6 C
-0.24 C
1974
6.1 C
+0.21 C
1975
4.5 C
-1.30 C
1976
6.3 C
+0.41 C
1977
6.0 C
+0.14 C
1978
5.4 C
-0.40 C
The fitted trend in annual mean temperature here over 1906 to 1978 is -0.01 C (-0.10 to 0.07) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.18 to 0.13) per decade. The slope is a straight line fitted to 70 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at East Anaconda
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.10 to 0.07) per decade
-0.02 F (-0.18 to 0.13) per decade
1906 to 1978
70
Not clearly different from zero
Mean daily maximum
-0.01 C (-0.11 to 0.09) per decade
-0.02 F (-0.19 to 0.15) per decade
1906 to 1978
70
Not clearly different from zero
Mean daily minimum
-0.01 C (-0.10 to 0.07) per decade
-0.03 F (-0.18 to 0.13) per decade
1906 to 1978
70
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
1905 to 1980
Yearly extremes at East Anaconda: 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)
1940
33.3 C (91.9 F)
76
Coldest night (TNn)
-37.2 C (-35.0 F)
1936
-28.8 C (-19.9 F)
76
Wettest day (Rx1day)
52.1 mm (2.1 in)
1938
22.9 mm (0.9 in)
76
Wettest five days (Rx5day)
117.0 mm (4.6 in)
1908
38.6 mm (1.5 in)
76
Longest dry spell (CDD)
62 days
1952
28 days
76
Hottest day (TXx)
The hottest day of the year at East Anaconda, 1905 to 1980. The record is 37.8 C (100.0 F) in 1940, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at East Anaconda by year
Year
Hottest day (TXx)
1905
31.7 C (89.1 F)
1906
32.8 C (91.0 F)
1907
28.9 C (84.0 F)
1908
33.9 C (93.0 F)
1909
32.2 C (90.0 F)
1910
33.9 C (93.0 F)
1911
32.8 C (91.0 F)
1912
31.1 C (88.0 F)
1913
32.2 C (90.0 F)
1914
32.2 C (90.0 F)
1915
30.6 C (87.1 F)
1916
33.3 C (91.9 F)
1917
34.4 C (93.9 F)
1918
33.9 C (93.0 F)
1919
35.0 C (95.0 F)
1920
33.9 C (93.0 F)
1921
35.6 C (96.1 F)
1922
31.7 C (89.1 F)
1923
33.3 C (91.9 F)
1924
34.4 C (93.9 F)
1925
33.3 C (91.9 F)
1926
34.4 C (93.9 F)
1927
31.7 C (89.1 F)
1928
34.4 C (93.9 F)
1929
36.1 C (97.0 F)
1930
33.3 C (91.9 F)
1931
36.1 C (97.0 F)
1932
33.9 C (93.0 F)
1933
37.2 C (99.0 F)
1934
35.0 C (95.0 F)
1935
36.1 C (97.0 F)
1936
36.7 C (98.1 F)
1937
36.1 C (97.0 F)
1938
32.2 C (90.0 F)
1939
36.1 C (97.0 F)
1940
37.8 C (100.0 F)
1941
33.9 C (93.0 F)
1942
33.3 C (91.9 F)
1943
33.9 C (93.0 F)
1944
31.7 C (89.1 F)
1945
33.3 C (91.9 F)
1946
33.9 C (93.0 F)
1947
33.3 C (91.9 F)
1948
33.3 C (91.9 F)
1949
35.0 C (95.0 F)
1950
33.3 C (91.9 F)
1951
34.4 C (93.9 F)
1952
32.2 C (90.0 F)
1953
35.0 C (95.0 F)
1954
35.6 C (96.1 F)
1955
36.1 C (97.0 F)
1956
32.8 C (91.0 F)
1957
32.8 C (91.0 F)
1958
32.2 C (90.0 F)
1959
33.3 C (91.9 F)
1960
36.1 C (97.0 F)
1961
36.7 C (98.1 F)
1962
31.1 C (88.0 F)
1963
33.3 C (91.9 F)
1964
31.1 C (88.0 F)
1965
33.3 C (91.9 F)
1966
33.9 C (93.0 F)
1967
33.9 C (93.0 F)
1968
32.8 C (91.0 F)
1969
35.6 C (96.1 F)
1970
33.3 C (91.9 F)
1971
32.8 C (91.0 F)
1972
32.2 C (90.0 F)
1973
35.0 C (95.0 F)
1974
33.9 C (93.0 F)
1975
33.3 C (91.9 F)
1976
32.8 C (91.0 F)
1977
32.2 C (90.0 F)
1978
31.7 C (89.1 F)
1979
32.8 C (91.0 F)
1980
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at East Anaconda, 1905 to 1980. The record is -37.2 C (-35.0 F) in 1936, marked on the chart; the median year is -28.8 C (-19.9 F).
Coldest night (TNn) at East Anaconda by year
Year
Coldest night (TNn)
1905
-24.4 C (-11.9 F)
1906
-27.8 C (-18.0 F)
1907
-31.7 C (-25.1 F)
1908
-27.2 C (-17.0 F)
1909
-30.6 C (-23.1 F)
1910
-30.6 C (-23.1 F)
1911
-28.3 C (-18.9 F)
1912
-22.2 C (-8.0 F)
1913
-26.7 C (-16.1 F)
1914
-31.1 C (-24.0 F)
1915
-25.6 C (-14.1 F)
1916
-34.4 C (-29.9 F)
1917
-26.7 C (-16.1 F)
1918
-31.7 C (-25.1 F)
1919
-31.1 C (-24.0 F)
1920
-26.1 C (-15.0 F)
1921
-27.2 C (-17.0 F)
1922
-28.3 C (-18.9 F)
1923
-32.2 C (-26.0 F)
1924
-33.9 C (-29.0 F)
1925
-18.9 C (-2.0 F)
1926
-29.4 C (-20.9 F)
1927
-32.2 C (-26.0 F)
1928
-31.1 C (-24.0 F)
1929
-31.1 C (-24.0 F)
1930
-34.4 C (-29.9 F)
1931
-22.2 C (-8.0 F)
1932
-32.8 C (-27.0 F)
1933
-36.1 C (-33.0 F)
1934
-20.6 C (-5.1 F)
1935
-32.2 C (-26.0 F)
1936
-37.2 C (-35.0 F)
1937
-32.2 C (-26.0 F)
1938
-27.2 C (-17.0 F)
1939
-32.2 C (-26.0 F)
1940
-26.1 C (-15.0 F)
1941
-27.2 C (-17.0 F)
1942
-31.1 C (-24.0 F)
1943
-31.1 C (-24.0 F)
1944
-23.3 C (-9.9 F)
1945
-27.2 C (-17.0 F)
1946
-21.7 C (-7.1 F)
1947
-22.2 C (-8.0 F)
1948
-25.6 C (-14.1 F)
1949
-30.6 C (-23.1 F)
1950
-29.4 C (-20.9 F)
1951
-31.1 C (-24.0 F)
1952
-26.1 C (-15.0 F)
1953
-17.2 C (1.0 F)
1954
-28.3 C (-18.9 F)
1955
-30.0 C (-22.0 F)
1956
-30.0 C (-22.0 F)
1957
-30.0 C (-22.0 F)
1958
-20.0 C (-4.0 F)
1959
-31.7 C (-25.1 F)
1960
-27.2 C (-17.0 F)
1961
-30.0 C (-22.0 F)
1962
-32.8 C (-27.0 F)
1963
-35.6 C (-32.1 F)
1964
-35.0 C (-31.0 F)
1965
-26.7 C (-16.1 F)
1966
-21.1 C (-6.0 F)
1967
-24.4 C (-11.9 F)
1968
-27.8 C (-18.0 F)
1969
-27.8 C (-18.0 F)
1970
-21.7 C (-7.1 F)
1971
-22.2 C (-8.0 F)
1972
-32.2 C (-26.0 F)
1973
-26.7 C (-16.1 F)
1974
-27.8 C (-18.0 F)
1975
-23.9 C (-11.0 F)
1976
-26.7 C (-16.1 F)
1977
-30.0 C (-22.0 F)
1978
-34.4 C (-29.9 F)
1979
-30.6 C (-23.1 F)
1980
-29.4 C (-20.9 F)
Wettest day (Rx1day)
The wettest day of the year at East Anaconda, 1905 to 1980. The record is 52.1 mm (2.1 in) in 1938, marked on the chart; the median year is 22.9 mm (0.9 in).
Wettest day (Rx1day) at East Anaconda by year
Year
Wettest day (Rx1day)
1905
7.9 mm (0.31 in)
1906
18.3 mm (0.7 in)
1907
25.4 mm (1.0 in)
1908
36.8 mm (1.4 in)
1909
46.7 mm (1.8 in)
1910
27.9 mm (1.1 in)
1911
45.7 mm (1.8 in)
1912
27.9 mm (1.1 in)
1913
38.4 mm (1.5 in)
1914
10.7 mm (0.4 in)
1915
32.8 mm (1.3 in)
1916
22.9 mm (0.9 in)
1917
31.8 mm (1.3 in)
1918
38.1 mm (1.5 in)
1919
18.3 mm (0.7 in)
1920
16.5 mm (0.6 in)
1921
19.1 mm (0.8 in)
1922
32.0 mm (1.3 in)
1923
15.2 mm (0.6 in)
1924
13.2 mm (0.5 in)
1925
20.1 mm (0.8 in)
1926
35.6 mm (1.4 in)
1927
16.0 mm (0.6 in)
1928
15.0 mm (0.6 in)
1929
38.1 mm (1.5 in)
1930
23.9 mm (0.9 in)
1931
22.9 mm (0.9 in)
1932
25.9 mm (1.0 in)
1933
15.2 mm (0.6 in)
1934
27.2 mm (1.1 in)
1935
13.7 mm (0.5 in)
1936
17.5 mm (0.7 in)
1937
29.7 mm (1.2 in)
1938
52.1 mm (2.1 in)
1939
16.3 mm (0.6 in)
1940
32.3 mm (1.3 in)
1941
34.8 mm (1.4 in)
1942
16.8 mm (0.7 in)
1943
33.5 mm (1.3 in)
1944
38.1 mm (1.5 in)
1945
15.2 mm (0.6 in)
1946
33.0 mm (1.3 in)
1947
18.5 mm (0.7 in)
1948
46.7 mm (1.8 in)
1949
28.2 mm (1.1 in)
1950
22.9 mm (0.9 in)
1951
19.3 mm (0.8 in)
1952
19.8 mm (0.8 in)
1953
20.8 mm (0.8 in)
1954
21.6 mm (0.9 in)
1955
24.9 mm (1.0 in)
1956
16.0 mm (0.6 in)
1957
24.1 mm (0.9 in)
1958
34.3 mm (1.4 in)
1959
24.1 mm (0.9 in)
1960
19.8 mm (0.8 in)
1961
19.8 mm (0.8 in)
1962
26.7 mm (1.1 in)
1963
24.1 mm (0.9 in)
1964
31.8 mm (1.3 in)
1965
28.2 mm (1.1 in)
1966
19.8 mm (0.8 in)
1967
16.5 mm (0.6 in)
1968
40.4 mm (1.6 in)
1969
19.1 mm (0.8 in)
1970
19.1 mm (0.8 in)
1971
11.4 mm (0.4 in)
1972
22.6 mm (0.9 in)
1973
25.4 mm (1.0 in)
1974
30.5 mm (1.2 in)
1975
26.7 mm (1.1 in)
1976
13.0 mm (0.5 in)
1977
16.5 mm (0.6 in)
1978
17.5 mm (0.7 in)
1979
18.3 mm (0.7 in)
1980
22.6 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at East Anaconda, 1905 to 1980. The record is 117.0 mm (4.6 in) in 1908, marked on the chart; the median year is 38.6 mm (1.5 in).
Wettest five days (Rx5day) at East Anaconda by year
Year
Wettest five days (Rx5day)
1905
8.4 mm (0.33 in)
1906
45.2 mm (1.8 in)
1907
57.2 mm (2.3 in)
1908
117.0 mm (4.6 in)
1909
51.5 mm (2.0 in)
1910
36.8 mm (1.4 in)
1911
50.4 mm (2.0 in)
1912
38.8 mm (1.5 in)
1913
46.5 mm (1.8 in)
1914
15.0 mm (0.6 in)
1915
65.9 mm (2.6 in)
1916
26.7 mm (1.1 in)
1917
71.1 mm (2.8 in)
1918
58.5 mm (2.3 in)
1919
32.5 mm (1.3 in)
1920
51.5 mm (2.0 in)
1921
38.3 mm (1.5 in)
1922
34.8 mm (1.4 in)
1923
35.6 mm (1.4 in)
1924
30.2 mm (1.2 in)
1925
39.9 mm (1.6 in)
1926
36.1 mm (1.4 in)
1927
36.6 mm (1.4 in)
1928
31.0 mm (1.2 in)
1929
78.2 mm (3.1 in)
1930
31.3 mm (1.2 in)
1931
29.9 mm (1.2 in)
1932
44.0 mm (1.7 in)
1933
23.6 mm (0.9 in)
1934
62.3 mm (2.5 in)
1935
21.1 mm (0.8 in)
1936
33.5 mm (1.3 in)
1937
38.1 mm (1.5 in)
1938
72.5 mm (2.9 in)
1939
30.0 mm (1.2 in)
1940
59.7 mm (2.4 in)
1941
40.6 mm (1.6 in)
1942
28.2 mm (1.1 in)
1943
47.0 mm (1.9 in)
1944
66.8 mm (2.6 in)
1945
32.3 mm (1.3 in)
1946
35.5 mm (1.4 in)
1947
31.7 mm (1.2 in)
1948
56.4 mm (2.2 in)
1949
36.6 mm (1.4 in)
1950
39.7 mm (1.6 in)
1951
26.2 mm (1.0 in)
1952
43.5 mm (1.7 in)
1953
25.9 mm (1.0 in)
1954
40.4 mm (1.6 in)
1955
47.3 mm (1.9 in)
1956
28.0 mm (1.1 in)
1957
38.1 mm (1.5 in)
1958
48.3 mm (1.9 in)
1959
34.3 mm (1.4 in)
1960
45.4 mm (1.8 in)
1961
35.6 mm (1.4 in)
1962
45.2 mm (1.8 in)
1963
35.5 mm (1.4 in)
1964
76.4 mm (3.0 in)
1965
71.6 mm (2.8 in)
1966
30.5 mm (1.2 in)
1967
46.0 mm (1.8 in)
1968
59.6 mm (2.3 in)
1969
38.9 mm (1.5 in)
1970
47.7 mm (1.9 in)
1971
19.3 mm (0.8 in)
1972
32.9 mm (1.3 in)
1973
44.3 mm (1.7 in)
1974
42.0 mm (1.7 in)
1975
51.3 mm (2.0 in)
1976
27.8 mm (1.1 in)
1977
29.5 mm (1.2 in)
1978
37.4 mm (1.5 in)
1979
22.3 mm (0.9 in)
1980
49.0 mm (1.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at East Anaconda, 1905 to 1980. The record is 62 days in 1952, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at East Anaconda by year
Year
Longest dry spell (CDD)
1905
23 days
1906
22 days
1907
43 days
1908
27 days
1909
21 days
1910
25 days
1911
31 days
1912
39 days
1913
26 days
1914
25 days
1915
26 days
1916
19 days
1917
55 days
1918
46 days
1919
51 days
1920
18 days
1921
33 days
1922
32 days
1923
27 days
1924
26 days
1925
22 days
1926
34 days
1927
17 days
1928
26 days
1929
22 days
1930
41 days
1931
30 days
1932
20 days
1933
25 days
1934
25 days
1935
49 days
1936
22 days
1937
55 days
1938
23 days
1939
45 days
1940
28 days
1941
29 days
1942
25 days
1943
30 days
1944
26 days
1945
22 days
1946
13 days
1947
12 days
1948
29 days
1949
34 days
1950
26 days
1951
27 days
1952
62 days
1953
45 days
1954
50 days
1955
36 days
1956
27 days
1957
36 days
1958
21 days
1959
29 days
1960
34 days
1961
28 days
1962
25 days
1963
27 days
1964
28 days
1965
33 days
1966
31 days
1967
25 days
1968
23 days
1969
45 days
1970
30 days
1971
25 days
1972
33 days
1973
33 days
1974
32 days
1975
23 days
1976
38 days
1977
44 days
1978
29 days
1979
50 days
1980
25 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
70 years with a frost
Across 70 years with a frost, the median last spring frost at East Anaconda falls on 30 May and the median first autumn frost on 20 September, which leaves a median of 115 days between them.
In 1949 to 1978 the median growing season was 115 days. That is 3 days more than in 1906 to 1937.
Fitted over all years, the growing season changes by +2.2 days per decade at this station.
Frost dates and growing season at East Anaconda
Measure
Median, all years
Earliest period (1906 to 1937)
Recent period (1949 to 1978)
Recent against earliest
Fitted trend
Last spring frost
30 May
3 June
26 May
8 days earlier
-1.2 days per decade
First autumn frost
20 September
20 September
19 September
1 day earlier
+1.0 days per decade
Growing days
115 days
112 days
115 days
3 days more
+2.2 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
69 years, 1906 to 1979
A day with at least 23.2 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 57.6 mm (2.3 in) of rain is expected about once in 100 years.
Rainfall return levels at East Anaconda: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
23.2 mm (0.9 in)
5 years
31.5 mm (1.2 in)
10 years
37.4 mm (1.5 in)
25 years
45.2 mm (1.8 in)
50 years
51.3 mm (2.0 in)
100 years
57.6 mm (2.3 in)
Longer than the 69 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, 69 years of values from 1906 to 1979.
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: 52.1 mm (2.1 in) in 1938; 46.7 mm (1.8 in) in 1909; 46.7 mm (1.8 in) in 1948.
Station Changes
3 suspected
3 changes were suspected in the annual mean temperature of East Anaconda, at 1927, 1941 and 1952. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1927 ran 0.4 C (0.6 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1941 ran 0.2 C (0.4 F) lower than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1952 ran 0.4 C (0.7 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at East Anaconda, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1927
+0.4
+0.6
possible
5
1941
-0.2
-0.4
possible
5
1952
+0.4
+0.7
possible
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for East Anaconda standing records by year: CSV or JSON. Field meanings are on the data page.
Data for East Anaconda 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.