Record envelope, standing records and threshold days for Sierraville Rs (USC00048218), California, United States, with 118 years of record.
Key Facts for Sierraville Rs
Sierraville Rs (USC00048218) is a weather station in California, United States at 39.58 latitude and -120.37 longitude, 1,516 m (4,975 ft) above sea level.
The station reports from 1909 to 2026, 118 years of record.
1,464 records set at Sierraville Rs still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sierraville Rs set a daily record precipitation of 11.2 mm (0.4 in) on 13 July 2026.
About the Station
Location: California, United States, 39.58 latitude, -120.37 longitude.
Elevation: 1,516 m (4,975 ft).
Period of record: 1909 to 2026, 118 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
7 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 Sierraville Rs. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Sierraville Rs, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-36.7 C (-34.1 F)
13.9 C (57.0 F)
-12.2 C (10.0 F)
Feb
21.7 C (71.1 F)
-34.4 C (-29.9 F)
17.2 C (63.0 F)
-17.8 C (0.0 F)
Mar
28.3 C (82.9 F)
-26.1 C (-15.0 F)
28.3 C (82.9 F)
-6.1 C (21.0 F)
Apr
28.9 C (84.0 F)
-17.8 C (0.0 F)
21.7 C (71.1 F)
-5.6 C (21.9 F)
May
34.4 C (93.9 F)
-9.4 C (15.1 F)
28.9 C (84.0 F)
-3.3 C (26.1 F)
Jun
38.3 C (100.9 F)
-6.7 C (19.9 F)
32.8 C (91.0 F)
1.1 C (34.0 F)
Jul
40.0 C (104.0 F)
-5.0 C (23.0 F)
33.3 C (91.9 F)
2.2 C (36.0 F)
Aug
40.0 C (104.0 F)
-3.9 C (25.0 F)
36.7 C (98.1 F)
1.7 C (35.1 F)
Sep
37.8 C (100.0 F)
-10.0 C (14.0 F)
31.1 C (88.0 F)
-1.1 C (30.0 F)
Oct
33.3 C (91.9 F)
-13.9 C (7.0 F)
30.6 C (87.1 F)
1.1 C (34.0 F)
Nov
26.1 C (79.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sierraville Rs still stand. 1929 holds the most, with 37.
Standing records at Sierraville Rs by the year they were set
Year set
Standing records
1909
2
1910
25
1911
27
1912
33
1913
24
1914
18
1915
19
1916
20
1917
26
1918
6
1919
21
1920
7
1921
14
1922
21
1923
4
1924
20
1925
21
1926
11
1927
17
1928
16
1929
37
1930
12
1931
23
1932
22
1933
17
1934
24
1935
21
1936
13
1937
33
1938
9
1939
25
1940
8
1941
11
1942
12
1943
13
1944
9
1945
17
1946
9
1947
8
1948
14
1949
13
1950
26
1951
16
1952
12
1953
13
1954
8
1955
19
1956
7
1957
9
1958
17
1959
12
1960
14
1961
19
1962
16
1963
15
1964
15
1965
6
1966
21
1967
15
1968
12
1969
7
1970
11
1971
12
1972
19
1973
8
1974
11
1975
4
1976
19
1977
16
1978
14
1979
3
1980
10
1981
15
1982
7
1983
2
1984
2
1985
20
1986
17
1987
10
1988
9
1989
16
1990
12
1991
3
1992
3
1993
5
1994
6
1995
7
1996
8
1997
2
1998
10
1999
4
2000
4
2001
6
2002
9
2003
7
2004
8
2005
3
2006
3
2007
3
2008
8
2009
8
2010
13
2011
8
2012
10
2013
10
2014
8
2015
12
2016
7
2017
14
2018
3
2019
3
2020
1
2021
11
2022
7
2023
17
2024
2
2025
4
2026
9
All-Time Record Progression
5 new records
5 all-time records were set at Sierraville Rs between 5 August 1961 and 23 March 1995. Each dot is a new record.
When Sierraville Rs set new all-time records
Date
Kind
Detail
1961-08-05
Record high minimum temperature
Record high minimum temperature 17.2 C (63.0 F)
1962-10-12
Record daily precipitation
Record daily precipitation 154.9 mm (6.1 in)
1976-06-19
Record high minimum temperature
Record high minimum temperature 18.3 C (64.9 F)
1976-07-16
Record high minimum temperature
Record high minimum temperature 20.0 C (68.0 F)
1995-03-23
Record daily snowfall
Record daily snowfall 111.8 cm (44.0 in)
Wettest Day of Each Month
Oct: 154.9 mm (6.1 in)
The wettest day on record for each calendar month at Sierraville Rs. The most was 154.9 mm (6.1 in) on 12 October 1962.
Record daily precipitation for each month at Sierraville Rs
Month
Record daily precipitation (mm)
Date
Jan
131.1 mm (5.2 in)
9 January 2017
Feb
130.6 mm (5.1 in)
1 February 1963
Mar
108.0 mm (4.3 in)
14 March 1983
Apr
57.9 mm (2.3 in)
1 April 1927
May
68.3 mm (2.7 in)
19 May 1957
Jun
55.9 mm (2.2 in)
22 June 2026
Jul
50.8 mm (2.0 in)
14 July 1999
Aug
36.1 mm (1.4 in)
2 August 1976
Sep
38.9 mm (1.5 in)
13 September 1918
Oct
154.9 mm (6.1 in)
12 October 1962
Nov
116.8 mm (4.6 in)
23 November 1988
Dec
139.7 mm (5.5 in)
30 December 1913
Period of Record Coverage
1909 to 2026
Complete yearUnder 90 percent of days
118 years of record at Sierraville Rs, 1909 to 2026. 57 years have data for under 90 percent of days and are left out of rankings: 1909, 1944, 1946, 1955, 1973, 1975, 1976, 1977 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 56 complete years at Sierraville Rs, 1912 to 1975. Blue stripes are years cooler than the station's own mean of 7.6 C (45.6 F); red stripes are warmer. The coolest year was 1922, at 5.7 C (42.2 F), and the warmest was 1934, at 9.3 C (48.8 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Sierraville Rs as warming stripes, 1912 to 1975
Year
Annual mean temperature
Difference from the station mean
1912
6.0 C
-1.55 C
1913
6.2 C
-1.32 C
1915
6.8 C
-0.74 C
1916
5.7 C
-1.82 C
1917
5.8 C
-1.81 C
1918
7.3 C
-0.25 C
1919
6.5 C
-1.04 C
1920
6.9 C
-0.64 C
1921
7.6 C
+0.05 C
1922
5.7 C
-1.87 C
1923
6.9 C
-0.67 C
1924
7.7 C
+0.13 C
1925
7.7 C
+0.09 C
1926
8.6 C
+1.00 C
1927
7.6 C
0.00 C
1928
8.2 C
+0.63 C
1929
7.8 C
+0.27 C
1930
7.8 C
+0.19 C
1931
8.5 C
+0.95 C
1932
7.1 C
-0.48 C
1933
7.1 C
-0.44 C
1934
9.3 C
+1.76 C
1935
6.4 C
-1.14 C
1936
8.0 C
+0.39 C
1937
6.7 C
-0.85 C
1939
8.4 C
+0.80 C
1940
8.7 C
+1.13 C
1941
7.8 C
+0.27 C
1942
7.6 C
0.00 C
1943
8.0 C
+0.44 C
1945
8.8 C
+1.19 C
1947
8.2 C
+0.66 C
1948
6.9 C
-0.71 C
1949
6.8 C
-0.78 C
1951
9.1 C
+1.56 C
1952
7.4 C
-0.20 C
1955
6.7 C
-0.85 C
1956
7.3 C
-0.28 C
1957
7.2 C
-0.36 C
1958
9.0 C
+1.47 C
1959
8.8 C
+1.27 C
1960
8.4 C
+0.84 C
1961
8.5 C
+0.98 C
1962
7.9 C
+0.29 C
1963
8.2 C
+0.63 C
1964
7.0 C
-0.56 C
1965
7.6 C
+0.02 C
1966
8.2 C
+0.66 C
1967
7.9 C
+0.36 C
1968
7.8 C
+0.27 C
1969
7.8 C
+0.26 C
1970
8.4 C
+0.84 C
1971
7.0 C
-0.52 C
1972
7.3 C
-0.26 C
1974
7.8 C
+0.23 C
1975
7.3 C
-0.25 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1912 to 1975. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 56 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sierraville Rs
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1912 to 1975
56
Rise
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.2 to 0.4) per decade
1912 to 1975
56
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.6 F (0.3 to 0.8) per decade
1912 to 1975
56
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
1909 to 2026
Yearly extremes at Sierraville Rs: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1928
35.6 C (96.1 F)
118
Coldest night (TNn)
-36.7 C (-34.1 F)
1937
-22.8 C (-9.0 F)
118
Wettest day (Rx1day)
154.9 mm (6.1 in)
1962
57.9 mm (2.3 in)
118
Wettest five days (Rx5day)
390.9 mm (15.4 in)
1962
99.0 mm (3.9 in)
118
Longest dry spell (CDD)
165 days
1928
59 days
118
Hottest day (TXx)
The hottest day of the year at Sierraville Rs, 1909 to 2026. The record is 40.0 C (104.0 F) in 1928, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Sierraville Rs by year
Year
Hottest day (TXx)
1909
10.0 C (50.0 F)
1910
36.1 C (97.0 F)
1911
33.9 C (93.0 F)
1912
35.0 C (95.0 F)
1913
34.4 C (93.9 F)
1914
35.6 C (96.1 F)
1915
35.6 C (96.1 F)
1916
32.8 C (91.0 F)
1917
35.0 C (95.0 F)
1918
34.4 C (93.9 F)
1919
35.6 C (96.1 F)
1920
36.7 C (98.1 F)
1921
36.1 C (97.0 F)
1922
35.6 C (96.1 F)
1923
36.1 C (97.0 F)
1924
38.9 C (102.0 F)
1925
36.7 C (98.1 F)
1926
36.7 C (98.1 F)
1927
35.0 C (95.0 F)
1928
40.0 C (104.0 F)
1929
38.3 C (100.9 F)
1930
35.0 C (95.0 F)
1931
39.4 C (102.9 F)
1932
37.2 C (99.0 F)
1933
38.3 C (100.9 F)
1934
37.2 C (99.0 F)
1935
36.7 C (98.1 F)
1936
36.7 C (98.1 F)
1937
37.2 C (99.0 F)
1938
37.2 C (99.0 F)
1939
37.8 C (100.0 F)
1940
37.2 C (99.0 F)
1941
35.0 C (95.0 F)
1942
36.1 C (97.0 F)
1943
35.6 C (96.1 F)
1944
33.9 C (93.0 F)
1945
36.1 C (97.0 F)
1946
35.0 C (95.0 F)
1947
33.3 C (91.9 F)
1948
33.3 C (91.9 F)
1949
32.8 C (91.0 F)
1950
37.2 C (99.0 F)
1951
36.7 C (98.1 F)
1952
33.3 C (91.9 F)
1953
33.3 C (91.9 F)
1954
35.0 C (95.0 F)
1955
37.8 C (100.0 F)
1956
35.0 C (95.0 F)
1957
35.6 C (96.1 F)
1958
35.0 C (95.0 F)
1959
35.6 C (96.1 F)
1960
37.8 C (100.0 F)
1961
37.8 C (100.0 F)
1962
35.0 C (95.0 F)
1963
34.4 C (93.9 F)
1964
38.3 C (100.9 F)
1965
33.9 C (93.0 F)
1966
36.1 C (97.0 F)
1967
36.7 C (98.1 F)
1968
34.4 C (93.9 F)
1969
35.0 C (95.0 F)
1970
34.4 C (93.9 F)
1971
36.7 C (98.1 F)
1972
37.8 C (100.0 F)
1973
35.0 C (95.0 F)
1974
33.9 C (93.0 F)
1975
37.8 C (100.0 F)
1976
36.1 C (97.0 F)
1977
36.7 C (98.1 F)
1978
36.7 C (98.1 F)
1979
36.1 C (97.0 F)
1980
36.7 C (98.1 F)
1981
40.0 C (104.0 F)
1982
35.6 C (96.1 F)
1983
34.4 C (93.9 F)
1984
35.6 C (96.1 F)
1985
35.0 C (95.0 F)
1986
33.3 C (91.9 F)
1987
35.6 C (96.1 F)
1988
35.0 C (95.0 F)
1989
33.3 C (91.9 F)
1990
35.0 C (95.0 F)
1991
32.8 C (91.0 F)
1992
35.0 C (95.0 F)
1993
33.3 C (91.9 F)
1994
34.4 C (93.9 F)
1995
32.8 C (91.0 F)
1996
34.4 C (93.9 F)
1997
35.6 C (96.1 F)
1998
36.1 C (97.0 F)
1999
35.0 C (95.0 F)
2000
35.0 C (95.0 F)
2001
36.1 C (97.0 F)
2002
37.8 C (100.0 F)
2003
36.7 C (98.1 F)
2004
33.3 C (91.9 F)
2005
34.4 C (93.9 F)
2006
35.0 C (95.0 F)
2007
37.2 C (99.0 F)
2008
35.0 C (95.0 F)
2009
34.4 C (93.9 F)
2010
34.4 C (93.9 F)
2011
31.7 C (89.1 F)
2012
35.0 C (95.0 F)
2013
36.7 C (98.1 F)
2014
36.1 C (97.0 F)
2015
35.6 C (96.1 F)
2016
36.1 C (97.0 F)
2017
35.6 C (96.1 F)
2018
35.6 C (96.1 F)
2019
33.9 C (93.0 F)
2020
20.0 C (68.0 F)
2021
36.1 C (97.0 F)
2022
36.7 C (98.1 F)
2023
37.2 C (99.0 F)
2024
36.1 C (97.0 F)
2025
35.0 C (95.0 F)
2026
36.7 C (98.1 F)
Coldest night (TNn)
The coldest night of the year at Sierraville Rs, 1909 to 2026. The record is -36.7 C (-34.1 F) in 1937, marked on the chart; the median year is -22.8 C (-9.0 F).
Coldest night (TNn) at Sierraville Rs by year
Year
Coldest night (TNn)
1909
-23.9 C (-11.0 F)
1910
-27.2 C (-17.0 F)
1911
-34.4 C (-29.9 F)
1912
-30.6 C (-23.1 F)
1913
-21.7 C (-7.1 F)
1914
-27.8 C (-18.0 F)
1915
-20.0 C (-4.0 F)
1916
-31.1 C (-24.0 F)
1917
-26.1 C (-15.0 F)
1918
-23.3 C (-9.9 F)
1919
-25.0 C (-13.0 F)
1920
-20.6 C (-5.1 F)
1921
-20.0 C (-4.0 F)
1922
-29.4 C (-20.9 F)
1923
-28.3 C (-18.9 F)
1924
-31.1 C (-24.0 F)
1925
-22.8 C (-9.0 F)
1926
-20.6 C (-5.1 F)
1927
-21.7 C (-7.1 F)
1928
-23.3 C (-9.9 F)
1929
-27.2 C (-17.0 F)
1930
-27.8 C (-18.0 F)
1931
-28.9 C (-20.0 F)
1932
-32.8 C (-27.0 F)
1933
-26.1 C (-15.0 F)
1934
-24.4 C (-11.9 F)
1935
-25.6 C (-14.1 F)
1936
-19.4 C (-2.9 F)
1937
-36.7 C (-34.1 F)
1938
-27.8 C (-18.0 F)
1939
-31.7 C (-25.1 F)
1940
-20.6 C (-5.1 F)
1941
-17.8 C (0.0 F)
1942
-30.6 C (-23.1 F)
1943
-18.9 C (-2.0 F)
1944
-21.7 C (-7.1 F)
1945
-21.1 C (-6.0 F)
1946
-14.4 C (6.1 F)
1947
-17.2 C (1.0 F)
1948
-25.0 C (-13.0 F)
1949
-31.7 C (-25.1 F)
1950
-25.6 C (-14.1 F)
1951
-24.4 C (-11.9 F)
1952
-28.3 C (-18.9 F)
1953
-13.3 C (8.1 F)
1954
-20.0 C (-4.0 F)
1955
-23.9 C (-11.0 F)
1956
-26.7 C (-16.1 F)
1957
-26.1 C (-15.0 F)
1958
-17.8 C (0.0 F)
1959
-23.9 C (-11.0 F)
1960
-23.9 C (-11.0 F)
1961
-19.4 C (-2.9 F)
1962
-27.8 C (-18.0 F)
1963
-22.2 C (-8.0 F)
1964
-18.3 C (-0.9 F)
1965
-27.8 C (-18.0 F)
1966
-25.6 C (-14.1 F)
1967
-19.4 C (-2.9 F)
1968
-25.6 C (-14.1 F)
1969
-22.2 C (-8.0 F)
1970
-23.3 C (-9.9 F)
1971
-23.9 C (-11.0 F)
1972
-33.9 C (-29.0 F)
1973
-22.8 C (-9.0 F)
1974
-22.8 C (-9.0 F)
1975
-28.3 C (-18.9 F)
1976
-16.1 C (3.0 F)
1977
-17.8 C (0.0 F)
1978
-23.3 C (-9.9 F)
1979
-23.9 C (-11.0 F)
1980
-14.4 C (6.1 F)
1981
-20.0 C (-4.0 F)
1982
-18.9 C (-2.0 F)
1983
-15.6 C (3.9 F)
1984
-23.9 C (-11.0 F)
1985
-22.2 C (-8.0 F)
1986
-13.3 C (8.1 F)
1987
-26.1 C (-15.0 F)
1988
-27.8 C (-18.0 F)
1989
-29.4 C (-20.9 F)
1990
-26.7 C (-16.1 F)
1991
-17.8 C (0.0 F)
1992
-23.9 C (-11.0 F)
1993
-30.6 C (-23.1 F)
1994
-20.0 C (-4.0 F)
1995
-17.8 C (0.0 F)
1996
-18.9 C (-2.0 F)
1997
-21.1 C (-6.0 F)
1998
-25.0 C (-13.0 F)
1999
-18.3 C (-0.9 F)
2000
-13.3 C (8.1 F)
2001
-18.9 C (-2.0 F)
2002
-22.2 C (-8.0 F)
2003
-13.9 C (7.0 F)
2004
-26.7 C (-16.1 F)
2005
-21.7 C (-7.1 F)
2006
-17.2 C (1.0 F)
2007
-17.2 C (1.0 F)
2008
-27.2 C (-17.0 F)
2009
-29.4 C (-20.9 F)
2010
-22.8 C (-9.0 F)
2011
-26.1 C (-15.0 F)
2012
-21.1 C (-6.0 F)
2013
-30.0 C (-22.0 F)
2014
-16.7 C (1.9 F)
2015
-18.9 C (-2.0 F)
2016
-18.3 C (-0.9 F)
2017
-17.2 C (1.0 F)
2018
-18.3 C (-0.9 F)
2019
-21.7 C (-7.1 F)
2020
-16.1 C (3.0 F)
2021
-10.0 C (14.0 F)
2022
-20.0 C (-4.0 F)
2023
-21.7 C (-7.1 F)
2024
-20.0 C (-4.0 F)
2025
-10.6 C (12.9 F)
2026
-17.8 C (0.0 F)
Wettest day (Rx1day)
The wettest day of the year at Sierraville Rs, 1909 to 2026. The record is 154.9 mm (6.1 in) in 1962, marked on the chart; the median year is 57.9 mm (2.3 in).
Wettest day (Rx1day) at Sierraville Rs by year
Year
Wettest day (Rx1day)
1909
69.9 mm (2.8 in)
1910
44.5 mm (1.8 in)
1911
69.9 mm (2.8 in)
1912
63.5 mm (2.5 in)
1913
139.7 mm (5.5 in)
1914
45.7 mm (1.8 in)
1915
53.3 mm (2.1 in)
1916
50.8 mm (2.0 in)
1917
44.5 mm (1.8 in)
1918
40.6 mm (1.6 in)
1919
71.1 mm (2.8 in)
1920
51.6 mm (2.0 in)
1921
51.8 mm (2.0 in)
1922
54.6 mm (2.1 in)
1923
55.9 mm (2.2 in)
1924
47.0 mm (1.9 in)
1925
50.8 mm (2.0 in)
1926
67.3 mm (2.6 in)
1927
57.9 mm (2.3 in)
1928
79.2 mm (3.1 in)
1929
53.3 mm (2.1 in)
1930
59.2 mm (2.3 in)
1931
45.7 mm (1.8 in)
1932
30.5 mm (1.2 in)
1933
77.0 mm (3.0 in)
1934
41.9 mm (1.6 in)
1935
41.4 mm (1.6 in)
1936
55.9 mm (2.2 in)
1937
132.1 mm (5.2 in)
1938
40.6 mm (1.6 in)
1939
39.9 mm (1.6 in)
1940
101.6 mm (4.0 in)
1941
65.0 mm (2.6 in)
1942
82.8 mm (3.3 in)
1943
127.0 mm (5.0 in)
1944
82.8 mm (3.3 in)
1945
82.6 mm (3.3 in)
1946
64.3 mm (2.5 in)
1947
55.9 mm (2.2 in)
1948
56.1 mm (2.2 in)
1949
38.9 mm (1.5 in)
1950
69.9 mm (2.8 in)
1951
86.4 mm (3.4 in)
1952
80.0 mm (3.1 in)
1953
41.7 mm (1.6 in)
1954
53.6 mm (2.1 in)
1955
103.4 mm (4.1 in)
1956
40.4 mm (1.6 in)
1957
68.3 mm (2.7 in)
1958
86.4 mm (3.4 in)
1959
47.5 mm (1.9 in)
1960
104.1 mm (4.1 in)
1961
37.6 mm (1.5 in)
1962
154.9 mm (6.1 in)
1963
130.6 mm (5.1 in)
1964
114.6 mm (4.5 in)
1965
48.0 mm (1.9 in)
1966
45.5 mm (1.8 in)
1967
88.4 mm (3.5 in)
1968
44.7 mm (1.8 in)
1969
83.8 mm (3.3 in)
1970
47.2 mm (1.9 in)
1971
67.1 mm (2.6 in)
1972
45.5 mm (1.8 in)
1973
66.3 mm (2.6 in)
1974
50.3 mm (2.0 in)
1975
46.2 mm (1.8 in)
1976
36.1 mm (1.4 in)
1977
64.8 mm (2.6 in)
1978
65.0 mm (2.6 in)
1979
62.0 mm (2.4 in)
1980
51.8 mm (2.0 in)
1981
87.9 mm (3.5 in)
1982
66.0 mm (2.6 in)
1983
108.0 mm (4.3 in)
1984
41.9 mm (1.6 in)
1985
56.9 mm (2.2 in)
1986
75.2 mm (3.0 in)
1987
62.0 mm (2.4 in)
1988
116.8 mm (4.6 in)
1989
54.1 mm (2.1 in)
1990
26.9 mm (1.1 in)
1991
65.5 mm (2.6 in)
1992
69.3 mm (2.7 in)
1993
52.8 mm (2.1 in)
1994
31.8 mm (1.3 in)
1995
70.4 mm (2.8 in)
1996
80.0 mm (3.1 in)
1997
35.8 mm (1.4 in)
1998
50.5 mm (2.0 in)
1999
73.7 mm (2.9 in)
2000
77.7 mm (3.1 in)
2001
89.9 mm (3.5 in)
2002
110.7 mm (4.4 in)
2003
30.0 mm (1.2 in)
2004
61.0 mm (2.4 in)
2005
63.8 mm (2.5 in)
2006
57.9 mm (2.3 in)
2007
32.8 mm (1.3 in)
2008
39.4 mm (1.6 in)
2009
64.8 mm (2.6 in)
2010
38.1 mm (1.5 in)
2011
77.5 mm (3.1 in)
2012
105.2 mm (4.1 in)
2013
15.2 mm (0.6 in)
2014
43.4 mm (1.7 in)
2015
49.8 mm (2.0 in)
2016
114.0 mm (4.5 in)
2017
131.1 mm (5.2 in)
2018
50.5 mm (2.0 in)
2019
82.6 mm (3.3 in)
2020
50.0 mm (2.0 in)
2021
44.7 mm (1.8 in)
2022
45.7 mm (1.8 in)
2023
76.2 mm (3.0 in)
2024
71.1 mm (2.8 in)
2025
20.6 mm (0.8 in)
2026
55.9 mm (2.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sierraville Rs, 1909 to 2026. The record is 390.9 mm (15.4 in) in 1962, marked on the chart; the median year is 99.0 mm (3.9 in).
Wettest five days (Rx5day) at Sierraville Rs by year
Year
Wettest five days (Rx5day)
1909
86.4 mm (3.4 in)
1910
91.5 mm (3.6 in)
1911
157.5 mm (6.2 in)
1912
77.5 mm (3.1 in)
1913
239.1 mm (9.4 in)
1914
278.5 mm (11.0 in)
1915
99.0 mm (3.9 in)
1916
114.3 mm (4.5 in)
1917
106.8 mm (4.2 in)
1918
70.7 mm (2.8 in)
1919
127.0 mm (5.0 in)
1920
69.6 mm (2.7 in)
1921
49.5 mm (1.9 in)
1922
110.5 mm (4.4 in)
1923
66.0 mm (2.6 in)
1924
58.4 mm (2.3 in)
1925
143.0 mm (5.6 in)
1926
162.3 mm (6.4 in)
1927
162.1 mm (6.4 in)
1928
187.1 mm (7.4 in)
1929
179.1 mm (7.1 in)
1930
113.1 mm (4.5 in)
1931
59.4 mm (2.3 in)
1932
70.4 mm (2.8 in)
1933
116.9 mm (4.6 in)
1934
69.8 mm (2.7 in)
1935
84.1 mm (3.3 in)
1936
96.6 mm (3.8 in)
1937
256.6 mm (10.1 in)
1938
99.0 mm (3.9 in)
1939
66.6 mm (2.6 in)
1940
200.8 mm (7.9 in)
1941
109.7 mm (4.3 in)
1942
197.5 mm (7.8 in)
1943
240.3 mm (9.5 in)
1944
109.9 mm (4.3 in)
1945
153.5 mm (6.0 in)
1946
180.7 mm (7.1 in)
1947
83.3 mm (3.3 in)
1948
98.8 mm (3.9 in)
1949
62.8 mm (2.5 in)
1950
112.1 mm (4.4 in)
1951
107.2 mm (4.2 in)
1952
236.5 mm (9.3 in)
1953
62.2 mm (2.4 in)
1954
109.9 mm (4.3 in)
1955
361.4 mm (14.2 in)
1956
66.6 mm (2.6 in)
1957
104.6 mm (4.1 in)
1958
116.2 mm (4.6 in)
1959
82.9 mm (3.3 in)
1960
148.1 mm (5.8 in)
1961
52.6 mm (2.1 in)
1962
390.9 mm (15.4 in)
1963
249.9 mm (9.8 in)
1964
318.4 mm (12.5 in)
1965
99.3 mm (3.9 in)
1966
114.2 mm (4.5 in)
1967
189.0 mm (7.4 in)
1968
56.7 mm (2.2 in)
1969
222.2 mm (8.7 in)
1970
140.3 mm (5.5 in)
1971
124.0 mm (4.9 in)
1972
59.8 mm (2.4 in)
1973
130.5 mm (5.1 in)
1974
110.3 mm (4.3 in)
1975
89.6 mm (3.5 in)
1976
36.9 mm (1.5 in)
1977
112.0 mm (4.4 in)
1978
57.9 mm (2.3 in)
1979
93.2 mm (3.7 in)
1980
77.2 mm (3.0 in)
1981
172.7 mm (6.8 in)
1982
151.9 mm (6.0 in)
1983
127.5 mm (5.0 in)
1984
84.0 mm (3.3 in)
1985
43.9 mm (1.7 in)
1986
105.6 mm (4.2 in)
1987
72.9 mm (2.9 in)
1988
126.7 mm (5.0 in)
1989
77.4 mm (3.0 in)
1990
34.8 mm (1.4 in)
1991
65.5 mm (2.6 in)
1992
64.3 mm (2.5 in)
1993
61.8 mm (2.4 in)
1994
54.6 mm (2.1 in)
1995
122.5 mm (4.8 in)
1996
101.8 mm (4.0 in)
1997
33.0 mm (1.3 in)
1998
69.2 mm (2.7 in)
1999
151.2 mm (6.0 in)
2000
94.4 mm (3.7 in)
2001
51.8 mm (2.0 in)
2002
146.1 mm (5.8 in)
2003
32.5 mm (1.3 in)
2004
77.5 mm (3.1 in)
2005
102.4 mm (4.0 in)
2006
19.0 mm (0.7 in)
2007
34.1 mm (1.3 in)
2008
76.0 mm (3.0 in)
2009
64.8 mm (2.6 in)
2010
53.3 mm (2.1 in)
2011
84.4 mm (3.3 in)
2012
146.1 mm (5.8 in)
2013
18.0 mm (0.7 in)
2014
22.6 mm (0.9 in)
2015
65.5 mm (2.6 in)
2016
173.5 mm (6.8 in)
2017
236.8 mm (9.3 in)
2018
121.7 mm (4.8 in)
2019
160.9 mm (6.3 in)
2020
68.0 mm (2.7 in)
2021
84.6 mm (3.3 in)
2022
44.4 mm (1.7 in)
2023
136.4 mm (5.4 in)
2024
30.7 mm (1.2 in)
2025
0.0 mm (0.00 in)
2026
21.4 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sierraville Rs, 1909 to 2026. The record is 165 days in 1928, marked on the chart; the median year is 59 days.
Longest dry spell (CDD) at Sierraville Rs by year
Year
Longest dry spell (CDD)
1909
14 days
1910
98 days
1911
104 days
1912
39 days
1913
74 days
1914
105 days
1915
39 days
1916
46 days
1917
45 days
1918
48 days
1919
26 days
1920
27 days
1921
18 days
1922
23 days
1923
41 days
1924
44 days
1925
23 days
1926
114 days
1927
87 days
1928
165 days
1929
69 days
1930
67 days
1931
57 days
1932
123 days
1933
89 days
1934
61 days
1935
48 days
1936
88 days
1937
84 days
1938
53 days
1939
40 days
1940
55 days
1941
39 days
1942
129 days
1943
97 days
1944
57 days
1945
85 days
1946
58 days
1947
66 days
1948
61 days
1949
81 days
1950
88 days
1951
48 days
1952
41 days
1953
77 days
1954
148 days
1955
73 days
1956
59 days
1957
98 days
1958
28 days
1959
84 days
1960
67 days
1961
64 days
1962
44 days
1963
46 days
1964
57 days
1965
37 days
1966
54 days
1967
66 days
1968
52 days
1969
89 days
1970
63 days
1971
39 days
1972
79 days
1973
29 days
1974
82 days
1975
53 days
1976
41 days
1977
60 days
1978
59 days
1979
39 days
1980
43 days
1981
120 days
1982
48 days
1983
47 days
1984
37 days
1985
52 days
1986
101 days
1987
96 days
1988
42 days
1989
59 days
1990
36 days
1991
27 days
1992
23 days
1993
68 days
1994
116 days
1995
128 days
1996
64 days
1997
92 days
1998
43 days
1999
41 days
2000
67 days
2001
141 days
2002
110 days
2003
65 days
2004
80 days
2005
85 days
2006
93 days
2007
33 days
2008
128 days
2009
56 days
2010
81 days
2011
31 days
2012
7 days
2013
5 days
2014
5 days
2015
70 days
2016
61 days
2017
50 days
2018
71 days
2019
108 days
2020
27 days
2021
93 days
2022
44 days
2023
59 days
2024
70 days
2025
5 days
2026
5 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
56 years with a frost
Across 56 years with a frost, the median last spring frost at Sierraville Rs falls on 21 June and the median first autumn frost on 21 July, which leaves a median of 35 days between them.
Fitted over all years, the growing season changes by +9.7 days per decade at this station.
Frost dates and growing season at Sierraville Rs
Measure
Median, all years
Earliest period
Recent period (1940 to 1975)
Recent against earliest
Fitted trend
Last spring frost
21 June
n/a
14 June
n/a
-2.4 days per decade
First autumn frost
21 July
n/a
16 August
n/a
+7.3 days per decade
Growing days
35 days
n/a
56 days
n/a
+9.7 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
73 years, 1910 to 2018
A day with at least 64.0 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 178.2 mm (7.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Sierraville Rs: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
64.0 mm (2.5 in)
5 years
89.6 mm (3.5 in)
10 years
108.4 mm (4.3 in)
25 years
134.4 mm (5.3 in)
50 years
155.6 mm (6.1 in)
100 years
178.2 mm (7.0 in)
Longer than the 73 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, 73 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: 154.9 mm (6.1 in) in 1962; 139.7 mm (5.5 in) in 1913; 132.1 mm (5.2 in) in 1937.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Sierraville Rs, at 1920. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1920 ran 0.6 C (1.0 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Sierraville Rs, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1920
+0.6
+1.0
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 Sierraville Rs standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sierraville Rs 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.