Record envelope, standing records and threshold days for Carson (USC00321370), North Dakota, United States, with 101 years of record.
Key Facts for Carson
Carson (USC00321370) is a weather station in North Dakota, United States at 46.42 latitude and -101.57 longitude, 712 m (2,335 ft) above sea level.
The station reports from 1912 to 2012, 101 years of record.
1,464 records set at Carson still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Carson set a daily record precipitation of 48.8 mm (1.9 in) on 6 July 2012.
About the Station
Location: North Dakota, United States, 46.42 latitude, -101.57 longitude.
Elevation: 712 m (2,335 ft).
Period of record: 1912 to 2012, 101 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 Carson. 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 Carson, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-40.6 C (-41.1 F)
n/a
n/a
Feb
20.0 C (68.0 F)
-41.7 C (-43.1 F)
n/a
n/a
Mar
28.3 C (82.9 F)
-35.6 C (-32.1 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-24.4 C (-11.9 F)
n/a
n/a
May
41.1 C (106.0 F)
-16.1 C (3.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
-2.2 C (28.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
-1.7 C (28.9 F)
n/a
n/a
Aug
42.8 C (109.0 F)
-3.3 C (26.1 F)
n/a
n/a
Sep
40.6 C (105.1 F)
-12.2 C (10.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-26.7 C (-16.1 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-39.4 C (-38.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Carson still stand. 1936 holds the most, with 60.
Standing records at Carson by the year they were set
Year set
Standing records
1912
18
1913
30
1914
20
1915
18
1916
12
1917
31
1918
20
1919
34
1920
18
1921
25
1922
26
1923
16
1924
23
1925
38
1926
12
1927
19
1928
16
1929
16
1930
14
1931
27
1932
18
1933
19
1934
38
1935
11
1936
60
1937
23
1938
15
1939
35
1940
11
1941
12
1942
17
1943
17
1944
7
1945
16
1946
12
1947
13
1948
18
1949
17
1950
21
1951
9
1952
16
1953
12
1954
18
1955
14
1956
16
1957
8
1958
17
1959
10
1960
8
1961
15
1962
16
1963
16
1964
10
1965
25
1966
8
1967
16
1968
18
1969
8
1970
7
1971
5
1972
18
1973
10
1974
6
1975
9
1976
9
1977
15
1978
6
1979
10
1980
13
1981
11
1982
4
1983
14
1984
5
1985
18
1986
11
1987
17
1988
15
1989
18
1990
6
1991
26
1992
25
1993
8
1994
11
1995
9
1996
11
1997
13
1998
3
2006
1
2007
11
2008
2
2009
14
2010
2
2011
7
2012
21
All-Time Record Progression
3 new records
3 all-time records were set at Carson between 9 June 1964 and 26 December 2009. Each dot is a new record.
When Carson set new all-time records
Date
Kind
Detail
1964-06-09
Record daily precipitation
Record daily precipitation 91.4 mm (3.6 in)
2009-02-26
Record daily snowfall
Record daily snowfall 38.1 cm (15.0 in)
2009-12-26
Record daily snowfall
Record daily snowfall 40.6 cm (16.0 in)
Wettest Day of Each Month
Jun: 91.4 mm (3.6 in)
The wettest day on record for each calendar month at Carson. The most was 91.4 mm (3.6 in) on 9 June 1964.
Record daily precipitation for each month at Carson
Month
Record daily precipitation (mm)
Date
Jan
25.1 mm (1.0 in)
23 January 2010
Feb
35.6 mm (1.4 in)
26 February 2009
Mar
35.6 mm (1.4 in)
23 March 2011
Apr
43.2 mm (1.7 in)
27 April 1964
May
71.4 mm (2.8 in)
21 May 2011
Jun
91.4 mm (3.6 in)
9 June 1964
Jul
57.2 mm (2.3 in)
18 July 1923
Aug
69.9 mm (2.8 in)
18 August 2007
Sep
54.4 mm (2.1 in)
24 September 1977
Oct
62.2 mm (2.4 in)
3 October 1915
Nov
36.3 mm (1.4 in)
3 November 1956
Dec
16.3 mm (0.6 in)
30 December 1922
Period of Record Coverage
1912 to 2012
Complete yearUnder 90 percent of days
94 years of record at Carson, 1912 to 2012. 10 years have data for under 90 percent of days and are left out of rankings: 1915, 1916, 1952, 1953, 1955, 1956, 1998, 2006 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 77 complete years at Carson, 1913 to 2011. Blue stripes are years cooler than the station's own mean of 5.2 C (41.3 F); red stripes are warmer. The coolest year was 1950, at 2.8 C (37.0 F), and the warmest was 1987, at 7.6 C (45.6 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Carson as warming stripes, 1913 to 2011
Year
Annual mean temperature
Difference from the station mean
1913
5.7 C
+0.50 C
1914
5.3 C
+0.11 C
1917
3.2 C
-1.95 C
1918
5.2 C
+0.03 C
1919
4.4 C
-0.77 C
1920
4.3 C
-0.89 C
1922
4.9 C
-0.33 C
1924
3.5 C
-1.69 C
1925
3.8 C
-1.36 C
1926
6.2 C
+1.01 C
1927
4.1 C
-1.07 C
1928
6.1 C
+0.92 C
1929
4.1 C
-1.08 C
1931
7.3 C
+2.13 C
1932
5.4 C
+0.24 C
1934
7.5 C
+2.35 C
1935
5.3 C
+0.10 C
1936
4.7 C
-0.52 C
1937
5.1 C
-0.05 C
1938
7.0 C
+1.81 C
1939
7.2 C
+2.04 C
1940
5.9 C
+0.76 C
1941
6.7 C
+1.47 C
1942
5.8 C
+0.62 C
1943
5.3 C
+0.12 C
1944
5.8 C
+0.57 C
1945
4.6 C
-0.61 C
1946
6.1 C
+0.91 C
1947
5.9 C
+0.68 C
1948
6.1 C
+0.89 C
1949
5.4 C
+0.20 C
1950
2.8 C
-2.41 C
1951
3.3 C
-1.84 C
1954
6.5 C
+1.36 C
1957
5.4 C
+0.24 C
1958
5.8 C
+0.60 C
1959
5.0 C
-0.14 C
1960
5.2 C
+0.06 C
1961
6.3 C
+1.16 C
1962
5.4 C
+0.23 C
1963
6.2 C
+1.02 C
1964
5.0 C
-0.18 C
1965
3.8 C
-1.34 C
1967
4.8 C
-0.42 C
1968
4.4 C
-0.83 C
1969
4.1 C
-1.12 C
1970
4.0 C
-1.17 C
1971
4.3 C
-0.85 C
1972
3.1 C
-2.08 C
1973
5.4 C
+0.22 C
1974
5.5 C
+0.27 C
1975
4.2 C
-1.02 C
1976
5.8 C
+0.58 C
1977
5.4 C
+0.19 C
1978
3.1 C
-2.06 C
1979
3.1 C
-2.06 C
1980
6.0 C
+0.85 C
1981
6.7 C
+1.55 C
1982
3.6 C
-1.59 C
1983
5.6 C
+0.40 C
1984
5.3 C
+0.12 C
1985
3.7 C
-1.44 C
1986
5.5 C
+0.36 C
1987
7.6 C
+2.37 C
1988
6.3 C
+1.15 C
1989
4.9 C
-0.32 C
1990
6.5 C
+1.34 C
1991
6.4 C
+1.26 C
1992
5.9 C
+0.68 C
1993
3.9 C
-1.33 C
1994
5.1 C
-0.05 C
1995
5.2 C
+0.04 C
1996
3.7 C
-1.45 C
1997
6.1 C
+0.94 C
2007
6.7 C
+1.55 C
2009
3.8 C
-1.35 C
2011
4.9 C
-0.31 C
The fitted trend in annual mean temperature here over 1913 to 2011 is -0.01 C (-0.11 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.20 to 0.17) per decade. The slope is a straight line fitted to 77 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Carson
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.11 to 0.09) per decade
-0.01 F (-0.20 to 0.17) per decade
1913 to 2011
77
Not clearly different from zero
Mean daily maximum
-0.13 C (-0.25 to -0.01) per decade
-0.23 F (-0.45 to -0.02) per decade
1913 to 2011
77
Fall
Mean daily minimum
0.12 C (0.02 to 0.21) per decade
0.21 F (0.03 to 0.38) per decade
1913 to 2011
77
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
1912 to 2012
Yearly extremes at Carson: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.7 C (116.1 F)
1936
38.3 C (100.9 F)
94
Coldest night (TNn)
-41.7 C (-43.1 F)
1936
-33.9 C (-29.0 F)
94
Wettest day (Rx1day)
91.4 mm (3.6 in)
1964
38.5 mm (1.5 in)
94
Wettest five days (Rx5day)
145.5 mm (5.7 in)
1941
60.9 mm (2.4 in)
93
Longest dry spell (CDD)
81 days
1913
34 days
94
Hottest day (TXx)
The hottest day of the year at Carson, 1912 to 2012. The record is 46.7 C (116.1 F) in 1936, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Carson by year
Year
Hottest day (TXx)
1912
38.3 C (100.9 F)
1913
38.9 C (102.0 F)
1914
35.0 C (95.0 F)
1915
35.0 C (95.0 F)
1916
36.7 C (98.1 F)
1917
40.0 C (104.0 F)
1918
37.8 C (100.0 F)
1919
39.4 C (102.9 F)
1920
35.6 C (96.1 F)
1921
43.3 C (109.9 F)
1922
36.7 C (98.1 F)
1923
36.1 C (97.0 F)
1924
35.6 C (96.1 F)
1925
38.3 C (100.9 F)
1926
40.0 C (104.0 F)
1927
38.3 C (100.9 F)
1928
38.3 C (100.9 F)
1929
42.2 C (108.0 F)
1930
40.6 C (105.1 F)
1931
42.8 C (109.0 F)
1932
37.8 C (100.0 F)
1933
42.2 C (108.0 F)
1934
42.8 C (109.0 F)
1935
40.6 C (105.1 F)
1936
46.7 C (116.1 F)
1937
40.6 C (105.1 F)
1938
41.1 C (106.0 F)
1939
40.6 C (105.1 F)
1940
40.6 C (105.1 F)
1941
42.8 C (109.0 F)
1942
38.3 C (100.9 F)
1943
37.8 C (100.0 F)
1944
38.9 C (102.0 F)
1945
40.6 C (105.1 F)
1946
43.3 C (109.9 F)
1947
42.2 C (108.0 F)
1948
40.6 C (105.1 F)
1949
42.2 C (108.0 F)
1950
36.7 C (98.1 F)
1951
38.9 C (102.0 F)
1952
37.8 C (100.0 F)
1953
37.8 C (100.0 F)
1954
40.6 C (105.1 F)
1955
38.3 C (100.9 F)
1956
37.8 C (100.0 F)
1957
38.9 C (102.0 F)
1958
41.1 C (106.0 F)
1959
40.0 C (104.0 F)
1960
40.6 C (105.1 F)
1961
40.0 C (104.0 F)
1962
35.0 C (95.0 F)
1963
39.4 C (102.9 F)
1964
38.9 C (102.0 F)
1965
36.1 C (97.0 F)
1966
36.1 C (97.0 F)
1967
40.0 C (104.0 F)
1968
37.8 C (100.0 F)
1969
38.3 C (100.9 F)
1970
38.3 C (100.9 F)
1971
37.8 C (100.0 F)
1972
35.6 C (96.1 F)
1973
40.6 C (105.1 F)
1974
36.7 C (98.1 F)
1975
38.3 C (100.9 F)
1976
37.8 C (100.0 F)
1977
37.2 C (99.0 F)
1978
38.9 C (102.0 F)
1979
37.2 C (99.0 F)
1980
37.8 C (100.0 F)
1981
39.4 C (102.9 F)
1982
35.0 C (95.0 F)
1983
37.8 C (100.0 F)
1984
35.6 C (96.1 F)
1985
36.7 C (98.1 F)
1986
36.1 C (97.0 F)
1987
34.4 C (93.9 F)
1988
38.9 C (102.0 F)
1989
39.4 C (102.9 F)
1990
36.7 C (98.1 F)
1991
38.3 C (100.9 F)
1992
33.9 C (93.0 F)
1993
32.8 C (91.0 F)
1994
35.0 C (95.0 F)
1995
37.2 C (99.0 F)
1996
37.2 C (99.0 F)
1997
36.7 C (98.1 F)
1998
31.7 C (89.1 F)
2006
15.0 C (59.0 F)
2007
40.6 C (105.1 F)
2008
36.7 C (98.1 F)
2009
34.4 C (93.9 F)
2010
38.9 C (102.0 F)
2011
35.6 C (96.1 F)
2012
37.2 C (99.0 F)
Coldest night (TNn)
The coldest night of the year at Carson, 1912 to 2012. The record is -41.7 C (-43.1 F) in 1936, marked on the chart; the median year is -33.9 C (-29.0 F).
Coldest night (TNn) at Carson by year
Year
Coldest night (TNn)
1912
-31.1 C (-24.0 F)
1913
-37.8 C (-36.0 F)
1914
-36.7 C (-34.1 F)
1915
-40.0 C (-40.0 F)
1916
-36.1 C (-33.0 F)
1917
-41.1 C (-42.0 F)
1918
-38.9 C (-38.0 F)
1919
-37.8 C (-36.0 F)
1920
-37.2 C (-35.0 F)
1921
-30.6 C (-23.1 F)
1922
-33.3 C (-27.9 F)
1923
-32.8 C (-27.0 F)
1924
-38.9 C (-38.0 F)
1925
-36.7 C (-34.1 F)
1926
-32.8 C (-27.0 F)
1927
-37.2 C (-35.0 F)
1928
-37.2 C (-35.0 F)
1929
-37.2 C (-35.0 F)
1930
-36.7 C (-34.1 F)
1931
-26.7 C (-16.1 F)
1932
-34.4 C (-29.9 F)
1933
-39.4 C (-38.9 F)
1934
-31.1 C (-24.0 F)
1935
-36.1 C (-33.0 F)
1936
-41.7 C (-43.1 F)
1937
-33.9 C (-29.0 F)
1938
-34.4 C (-29.9 F)
1939
-35.6 C (-32.1 F)
1940
-32.8 C (-27.0 F)
1941
-31.7 C (-25.1 F)
1942
-33.9 C (-29.0 F)
1943
-40.0 C (-40.0 F)
1944
-32.8 C (-27.0 F)
1945
-31.1 C (-24.0 F)
1946
-32.8 C (-27.0 F)
1947
-32.2 C (-26.0 F)
1948
-35.0 C (-31.0 F)
1949
-34.4 C (-29.9 F)
1950
-38.9 C (-38.0 F)
1951
-35.6 C (-32.1 F)
1952
-30.6 C (-23.1 F)
1953
-28.9 C (-20.0 F)
1954
-35.0 C (-31.0 F)
1955
-24.4 C (-11.9 F)
1956
-29.4 C (-20.9 F)
1957
-33.3 C (-27.9 F)
1958
-29.4 C (-20.9 F)
1959
-32.2 C (-26.0 F)
1960
-30.6 C (-23.1 F)
1961
-30.6 C (-23.1 F)
1962
-40.0 C (-40.0 F)
1963
-36.1 C (-33.0 F)
1964
-32.8 C (-27.0 F)
1965
-35.6 C (-32.1 F)
1966
-40.6 C (-41.1 F)
1967
-36.7 C (-34.1 F)
1968
-36.7 C (-34.1 F)
1969
-33.9 C (-29.0 F)
1970
-37.8 C (-36.0 F)
1971
-33.9 C (-29.0 F)
1972
-36.7 C (-34.1 F)
1973
-33.3 C (-27.9 F)
1974
-34.4 C (-29.9 F)
1975
-33.3 C (-27.9 F)
1976
-32.2 C (-26.0 F)
1977
-35.0 C (-31.0 F)
1978
-35.0 C (-31.0 F)
1979
-34.4 C (-29.9 F)
1980
-32.8 C (-27.0 F)
1981
-30.6 C (-23.1 F)
1982
-35.6 C (-32.1 F)
1983
-39.4 C (-38.9 F)
1984
-33.9 C (-29.0 F)
1985
-32.8 C (-27.0 F)
1986
-31.1 C (-24.0 F)
1987
-23.3 C (-9.9 F)
1988
-35.0 C (-31.0 F)
1989
-36.7 C (-34.1 F)
1990
-35.0 C (-31.0 F)
1991
-29.4 C (-20.9 F)
1992
-32.2 C (-26.0 F)
1993
-31.7 C (-25.1 F)
1994
-35.6 C (-32.1 F)
1995
-29.4 C (-20.9 F)
1996
-38.3 C (-36.9 F)
1997
-33.3 C (-27.9 F)
1998
-32.2 C (-26.0 F)
2006
-26.1 C (-15.0 F)
2007
-30.6 C (-23.1 F)
2008
-31.7 C (-25.1 F)
2009
-35.0 C (-31.0 F)
2010
-32.8 C (-27.0 F)
2011
-33.3 C (-27.9 F)
2012
-25.0 C (-13.0 F)
Wettest day (Rx1day)
The wettest day of the year at Carson, 1912 to 2012. The record is 91.4 mm (3.6 in) in 1964, marked on the chart; the median year is 38.5 mm (1.5 in).
Wettest day (Rx1day) at Carson by year
Year
Wettest day (Rx1day)
1912
42.2 mm (1.7 in)
1913
20.1 mm (0.8 in)
1914
53.8 mm (2.1 in)
1915
79.8 mm (3.1 in)
1916
40.6 mm (1.6 in)
1917
17.8 mm (0.7 in)
1918
26.7 mm (1.1 in)
1919
36.3 mm (1.4 in)
1920
25.4 mm (1.0 in)
1921
24.6 mm (1.0 in)
1922
43.7 mm (1.7 in)
1923
57.2 mm (2.3 in)
1924
43.2 mm (1.7 in)
1925
50.8 mm (2.0 in)
1926
33.5 mm (1.3 in)
1927
34.3 mm (1.4 in)
1928
35.6 mm (1.4 in)
1929
45.7 mm (1.8 in)
1930
38.4 mm (1.5 in)
1931
52.8 mm (2.1 in)
1932
33.8 mm (1.3 in)
1933
38.1 mm (1.5 in)
1934
23.6 mm (0.9 in)
1935
58.4 mm (2.3 in)
1936
25.4 mm (1.0 in)
1937
61.0 mm (2.4 in)
1938
38.4 mm (1.5 in)
1939
53.1 mm (2.1 in)
1940
35.8 mm (1.4 in)
1941
84.8 mm (3.3 in)
1942
36.1 mm (1.4 in)
1943
38.1 mm (1.5 in)
1944
34.5 mm (1.4 in)
1945
45.7 mm (1.8 in)
1946
38.6 mm (1.5 in)
1947
45.7 mm (1.8 in)
1948
49.0 mm (1.9 in)
1949
35.8 mm (1.4 in)
1950
25.4 mm (1.0 in)
1951
35.6 mm (1.4 in)
1952
40.9 mm (1.6 in)
1953
35.6 mm (1.4 in)
1954
33.3 mm (1.3 in)
1955
45.2 mm (1.8 in)
1956
36.3 mm (1.4 in)
1957
57.2 mm (2.3 in)
1958
28.2 mm (1.1 in)
1959
22.9 mm (0.9 in)
1960
36.6 mm (1.4 in)
1961
37.6 mm (1.5 in)
1962
52.8 mm (2.1 in)
1963
42.7 mm (1.7 in)
1964
91.4 mm (3.6 in)
1965
52.6 mm (2.1 in)
1966
35.6 mm (1.4 in)
1967
43.2 mm (1.7 in)
1968
31.5 mm (1.2 in)
1969
45.0 mm (1.8 in)
1970
31.0 mm (1.2 in)
1971
43.4 mm (1.7 in)
1972
53.8 mm (2.1 in)
1973
35.1 mm (1.4 in)
1974
23.6 mm (0.9 in)
1975
42.2 mm (1.7 in)
1976
37.1 mm (1.5 in)
1977
54.4 mm (2.1 in)
1978
29.5 mm (1.2 in)
1979
51.8 mm (2.0 in)
1980
31.5 mm (1.2 in)
1981
31.0 mm (1.2 in)
1982
39.6 mm (1.6 in)
1983
44.7 mm (1.8 in)
1984
48.3 mm (1.9 in)
1985
69.3 mm (2.7 in)
1986
54.6 mm (2.1 in)
1987
52.6 mm (2.1 in)
1988
34.3 mm (1.4 in)
1989
31.0 mm (1.2 in)
1990
22.1 mm (0.9 in)
1991
45.2 mm (1.8 in)
1992
26.7 mm (1.1 in)
1993
56.4 mm (2.2 in)
1994
53.3 mm (2.1 in)
1995
39.4 mm (1.6 in)
1996
22.9 mm (0.9 in)
1997
27.9 mm (1.1 in)
1998
12.7 mm (0.5 in)
2006
1.0 mm (0.04 in)
2007
69.9 mm (2.8 in)
2008
32.0 mm (1.3 in)
2009
48.8 mm (1.9 in)
2010
63.5 mm (2.5 in)
2011
71.4 mm (2.8 in)
2012
48.8 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Carson, 1912 to 2012. The record is 145.5 mm (5.7 in) in 1941, marked on the chart; the median year is 60.9 mm (2.4 in).
Wettest five days (Rx5day) at Carson by year
Year
Wettest five days (Rx5day)
1912
65.5 mm (2.6 in)
1913
23.6 mm (0.9 in)
1914
124.0 mm (4.9 in)
1915
93.3 mm (3.7 in)
1916
53.3 mm (2.1 in)
1917
25.4 mm (1.0 in)
1918
58.4 mm (2.3 in)
1919
42.5 mm (1.7 in)
1920
43.4 mm (1.7 in)
1921
45.4 mm (1.8 in)
1922
33.0 mm (1.3 in)
1923
109.3 mm (4.3 in)
1924
68.8 mm (2.7 in)
1925
89.6 mm (3.5 in)
1926
35.3 mm (1.4 in)
1927
85.2 mm (3.4 in)
1928
61.0 mm (2.4 in)
1929
n/a
1930
83.9 mm (3.3 in)
1931
61.2 mm (2.4 in)
1932
62.2 mm (2.4 in)
1933
38.6 mm (1.5 in)
1934
46.8 mm (1.8 in)
1935
62.2 mm (2.4 in)
1936
41.9 mm (1.6 in)
1937
99.9 mm (3.9 in)
1938
51.3 mm (2.0 in)
1939
54.1 mm (2.1 in)
1940
56.6 mm (2.2 in)
1941
145.5 mm (5.7 in)
1942
60.9 mm (2.4 in)
1943
97.8 mm (3.9 in)
1944
69.9 mm (2.8 in)
1945
47.2 mm (1.9 in)
1946
70.9 mm (2.8 in)
1947
85.9 mm (3.4 in)
1948
50.8 mm (2.0 in)
1949
50.8 mm (2.0 in)
1950
54.9 mm (2.2 in)
1951
54.9 mm (2.2 in)
1952
64.3 mm (2.5 in)
1953
74.7 mm (2.9 in)
1954
58.6 mm (2.3 in)
1955
65.2 mm (2.6 in)
1956
60.3 mm (2.4 in)
1957
68.1 mm (2.7 in)
1958
41.9 mm (1.6 in)
1959
31.5 mm (1.2 in)
1960
77.4 mm (3.0 in)
1961
58.2 mm (2.3 in)
1962
58.6 mm (2.3 in)
1963
64.5 mm (2.5 in)
1964
115.8 mm (4.6 in)
1965
55.9 mm (2.2 in)
1966
79.3 mm (3.1 in)
1967
64.8 mm (2.6 in)
1968
54.9 mm (2.2 in)
1969
104.0 mm (4.1 in)
1970
68.6 mm (2.7 in)
1971
55.3 mm (2.2 in)
1972
71.6 mm (2.8 in)
1973
51.4 mm (2.0 in)
1974
44.2 mm (1.7 in)
1975
73.2 mm (2.9 in)
1976
52.8 mm (2.1 in)
1977
95.0 mm (3.7 in)
1978
48.1 mm (1.9 in)
1979
89.4 mm (3.5 in)
1980
56.1 mm (2.2 in)
1981
70.1 mm (2.8 in)
1982
87.8 mm (3.5 in)
1983
68.3 mm (2.7 in)
1984
50.6 mm (2.0 in)
1985
73.8 mm (2.9 in)
1986
67.8 mm (2.7 in)
1987
63.5 mm (2.5 in)
1988
58.5 mm (2.3 in)
1989
47.5 mm (1.9 in)
1990
35.5 mm (1.4 in)
1991
56.1 mm (2.2 in)
1992
43.0 mm (1.7 in)
1993
105.9 mm (4.2 in)
1994
88.8 mm (3.5 in)
1995
73.7 mm (2.9 in)
1996
71.2 mm (2.8 in)
1997
57.9 mm (2.3 in)
1998
21.7 mm (0.9 in)
2006
0.0 mm (0.00 in)
2007
77.8 mm (3.1 in)
2008
37.3 mm (1.5 in)
2009
50.3 mm (2.0 in)
2010
66.0 mm (2.6 in)
2011
73.7 mm (2.9 in)
2012
53.6 mm (2.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Carson, 1912 to 2012. The record is 81 days in 1913, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Carson by year
Year
Longest dry spell (CDD)
1912
47 days
1913
81 days
1914
57 days
1915
61 days
1916
19 days
1917
28 days
1918
35 days
1919
44 days
1920
28 days
1921
27 days
1922
28 days
1923
13 days
1924
17 days
1925
30 days
1926
19 days
1927
26 days
1928
15 days
1929
2 days
1930
19 days
1931
19 days
1932
25 days
1933
28 days
1934
53 days
1935
32 days
1936
34 days
1937
40 days
1938
34 days
1939
29 days
1940
20 days
1941
53 days
1942
37 days
1943
34 days
1944
39 days
1945
40 days
1946
36 days
1947
29 days
1948
30 days
1949
33 days
1950
23 days
1951
36 days
1952
55 days
1953
45 days
1954
44 days
1955
31 days
1956
30 days
1957
35 days
1958
28 days
1959
25 days
1960
44 days
1961
51 days
1962
46 days
1963
47 days
1964
53 days
1965
34 days
1966
28 days
1967
48 days
1968
30 days
1969
50 days
1970
30 days
1971
53 days
1972
34 days
1973
23 days
1974
48 days
1975
32 days
1976
35 days
1977
38 days
1978
32 days
1979
80 days
1980
52 days
1981
57 days
1982
25 days
1983
40 days
1984
40 days
1985
44 days
1986
43 days
1987
46 days
1988
45 days
1989
35 days
1990
46 days
1991
43 days
1992
38 days
1993
25 days
1994
34 days
1995
13 days
1996
16 days
1997
39 days
1998
23 days
2006
15 days
2007
20 days
2008
31 days
2009
33 days
2010
23 days
2011
26 days
2012
28 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
77 years with a frost
Across 77 years with a frost, the median last spring frost at Carson falls on 21 May and the median first autumn frost on 18 September, which leaves a median of 118 days between them.
In 1971 to 2011 the median growing season was 129 days. That is 16 days more than in 1913 to 1948.
Fitted over all years, the growing season changes by +2.7 days per decade at this station.
Frost dates and growing season at Carson
Measure
Median, all years
Earliest period (1913 to 1948)
Recent period (1971 to 2011)
Recent against earliest
Fitted trend
Last spring frost
21 May
24 May
17 May
7 days earlier
-0.6 days per decade
First autumn frost
18 September
15 September
21 September
6 days later
+2.1 days per decade
Growing days
118 days
113 days
129 days
16 days more
+2.7 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
71 years, 1913 to 2011
A day with at least 39.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 88.0 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Carson: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
39.4 mm (1.6 in)
5 years
52.5 mm (2.1 in)
10 years
61.2 mm (2.4 in)
25 years
72.0 mm (2.8 in)
50 years
80.1 mm (3.2 in)
100 years
88.0 mm (3.5 in)
Longer than the 71 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, 71 years of values from 1913 to 2011.
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: 91.4 mm (3.6 in) in 1964; 79.8 mm (3.1 in) in 1915; 71.4 mm (2.8 in) in 2011.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Carson, at 1994. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1994 ran 0.3 C (0.6 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Carson, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1994
+0.3
+0.6
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 Carson standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Carson 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.