Record envelope, standing records and threshold days for Santa Rosa (USC00298107), New Mexico, United States, with 108 years of record.
Key Facts for Santa Rosa
Santa Rosa (USC00298107) is a weather station in New Mexico, United States at 34.96 latitude and -104.72 longitude, 1,417 m (4,650 ft) above sea level.
The station reports from 1913 to 2020, 108 years of record.
1,464 records set at Santa Rosa still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Santa Rosa set a daily record high minimum temperature of 16.1 C (61.0 F) on 2 May 2020.
About the Station
Location: New Mexico, United States, 34.96 latitude, -104.72 longitude.
Elevation: 1,417 m (4,650 ft).
Period of record: 1913 to 2020, 108 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 Santa Rosa. 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 Santa Rosa, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.2 C (81.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-16.7 C (1.9 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-10.6 C (12.9 F)
n/a
n/a
May
37.8 C (100.0 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
42.8 C (109.0 F)
3.3 C (37.9 F)
n/a
n/a
Jul
42.8 C (109.0 F)
8.3 C (46.9 F)
n/a
n/a
Aug
40.0 C (104.0 F)
5.6 C (42.1 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-16.1 C (3.0 F)
n/a
n/a
Dec
27.2 C (81.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Santa Rosa still stand. 1919 holds the most, with 75.
Standing records at Santa Rosa by the year they were set
Year set
Standing records
1918
43
1919
75
1920
27
1921
6
1923
7
1924
31
1925
16
1926
17
1927
14
1928
13
1929
19
1930
8
1931
22
1932
23
1933
14
1934
15
1935
17
1936
27
1937
21
1938
17
1939
15
1940
20
1941
17
1942
4
1943
12
1944
19
1945
20
1946
14
1947
11
1948
20
1949
14
1950
19
1951
12
1952
8
1953
12
1954
16
1955
19
1956
12
1957
14
1958
10
1959
14
1960
16
1961
9
1962
31
1963
23
1964
12
1965
15
1966
13
1967
16
1968
5
1969
10
1970
10
1971
26
1972
15
1973
12
1974
21
1975
6
1976
20
1977
9
1978
11
1979
17
1980
18
1981
25
1982
8
1983
19
1984
10
1985
8
1986
19
1987
9
1988
9
1989
21
1990
14
1991
14
1992
6
1993
4
1994
8
1995
15
1996
13
1997
34
1998
15
1999
15
2000
21
2001
11
2002
16
2003
13
2004
15
2005
17
2006
11
2007
6
2008
7
2009
9
2010
1
2012
8
2019
10
2020
4
All-Time Record Progression
8 new records
8 all-time records were set at Santa Rosa between 29 December 1958 and 30 April 1999. Each dot is a new record.
When Santa Rosa set new all-time records
Date
Kind
Detail
1958-12-29
Record daily snowfall
Record daily snowfall 30.5 cm (12.0 in)
1962-01-10
Record low maximum temperature
Record low maximum temperature -10.6 C (12.9 F)
1963-01-12
Record low maximum temperature
Record low maximum temperature -13.9 C (7.0 F)
1963-01-13
Record low minimum temperature
Record low minimum temperature -31.7 C (-25.1 F)
1964-02-04
Record daily snowfall
Record daily snowfall 38.1 cm (15.0 in)
1986-02-09
Record snow depth
Record snow depth 43.2 cm (17.0 in)
1990-06-24
Record high maximum temperature
Record high maximum temperature 42.8 C (109.0 F)
1999-04-30
Record daily precipitation
Record daily precipitation 92.2 mm (3.6 in)
Wettest Day of Each Month
Apr: 92.2 mm (3.6 in)
The wettest day on record for each calendar month at Santa Rosa. The most was 92.2 mm (3.6 in) on 30 April 1999.
Record daily precipitation for each month at Santa Rosa
Month
Record daily precipitation (mm)
Date
Jan
36.8 mm (1.4 in)
8 January 1939
Feb
32.5 mm (1.3 in)
24 February 2004
Mar
41.4 mm (1.6 in)
6 March 1958
Apr
92.2 mm (3.6 in)
30 April 1999
May
83.8 mm (3.3 in)
30 May 1930
Jun
64.3 mm (2.5 in)
28 June 1978
Jul
88.9 mm (3.5 in)
24 July 1976
Aug
76.2 mm (3.0 in)
22 August 1966
Sep
89.4 mm (3.5 in)
22 September 1941
Oct
83.8 mm (3.3 in)
11 October 1930
Nov
33.8 mm (1.3 in)
2 November 1923
Dec
38.1 mm (1.5 in)
10 December 1997
Period of Record Coverage
1918 to 2020
Complete yearUnder 90 percent of days
95 years of record at Santa Rosa, 1918 to 2020. 19 years have data for under 90 percent of days and are left out of rankings: 1918, 1921, 1923, 1924, 1932, 1942, 1943, 1946 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 71 complete years at Santa Rosa, 1919 to 2009. Blue stripes are years cooler than the station's own mean of 14.5 C (58.1 F); red stripes are warmer. The coolest year was 1944, at 12.4 C (54.3 F), and the warmest was 1934, at 15.9 C (60.5 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Santa Rosa as warming stripes, 1919 to 2009
Year
Annual mean temperature
Difference from the station mean
1919
14.4 C
-0.08 C
1920
15.3 C
+0.84 C
1925
15.2 C
+0.69 C
1926
14.6 C
+0.11 C
1927
15.3 C
+0.80 C
1928
14.4 C
-0.07 C
1929
13.7 C
-0.81 C
1930
14.3 C
-0.18 C
1931
12.9 C
-1.59 C
1933
14.6 C
+0.06 C
1934
15.9 C
+1.36 C
1935
14.8 C
+0.27 C
1936
15.3 C
+0.79 C
1937
15.4 C
+0.88 C
1938
15.8 C
+1.27 C
1939
14.8 C
+0.31 C
1940
15.6 C
+1.13 C
1941
13.2 C
-1.29 C
1944
12.4 C
-2.11 C
1945
13.2 C
-1.27 C
1947
13.8 C
-0.73 C
1948
13.9 C
-0.59 C
1949
13.7 C
-0.80 C
1950
14.9 C
+0.44 C
1951
14.2 C
-0.25 C
1952
14.0 C
-0.54 C
1953
14.3 C
-0.21 C
1954
15.8 C
+1.35 C
1955
14.8 C
+0.28 C
1956
14.8 C
+0.32 C
1958
14.5 C
-0.02 C
1959
14.2 C
-0.32 C
1960
13.9 C
-0.57 C
1962
14.8 C
+0.31 C
1963
14.9 C
+0.44 C
1964
14.4 C
-0.14 C
1965
14.9 C
+0.37 C
1966
14.6 C
+0.08 C
1967
15.1 C
+0.58 C
1968
14.5 C
+0.03 C
1969
14.9 C
+0.37 C
1971
14.5 C
-0.04 C
1972
14.7 C
+0.18 C
1973
14.0 C
-0.51 C
1974
14.8 C
+0.29 C
1975
14.0 C
-0.51 C
1976
14.3 C
-0.23 C
1977
15.3 C
+0.84 C
1979
14.1 C
-0.44 C
1981
15.5 C
+0.97 C
1982
14.5 C
-0.02 C
1983
14.2 C
-0.27 C
1984
14.4 C
-0.10 C
1986
14.8 C
+0.35 C
1987
14.1 C
-0.38 C
1988
14.5 C
-0.03 C
1989
15.1 C
+0.64 C
1990
14.8 C
+0.33 C
1991
14.5 C
-0.02 C
1992
14.6 C
+0.14 C
1994
15.5 C
+0.96 C
1995
15.4 C
+0.91 C
1996
14.3 C
-0.18 C
1997
12.8 C
-1.68 C
1998
13.9 C
-0.60 C
1999
13.7 C
-0.75 C
2000
14.1 C
-0.37 C
2001
13.8 C
-0.70 C
2002
13.9 C
-0.56 C
2003
14.6 C
+0.15 C
2009
14.5 C
-0.02 C
The fitted trend in annual mean temperature here over 1919 to 2009 is -0.03 C (-0.10 to 0.04) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.2 to 0.1) per decade. The slope is a straight line fitted to 71 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Santa Rosa
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.03 C (-0.10 to 0.04) per decade
-0.1 F (-0.2 to 0.1) per decade
1919 to 2009
71
Not clearly different from zero
Mean daily maximum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1919 to 2009
71
Rise
Mean daily minimum
-0.2 C (-0.3 to -0.1) per decade
-0.4 F (-0.6 to -0.2) per decade
1919 to 2009
71
Fall
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
1913 to 2020
Yearly extremes at Santa Rosa: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1990
38.3 C (100.9 F)
95
Coldest night (TNn)
-31.7 C (-25.1 F)
1963
-15.6 C (3.9 F)
95
Wettest day (Rx1day)
92.2 mm (3.6 in)
1999
40.1 mm (1.6 in)
101
Wettest five days (Rx5day)
154.1 mm (6.1 in)
1942
58.7 mm (2.3 in)
101
Longest dry spell (CDD)
130 days
1921
48 days
101
Hottest day (TXx)
The hottest day of the year at Santa Rosa, 1913 to 2020. The record is 42.8 C (109.0 F) in 1990, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Santa Rosa by year
Year
Hottest day (TXx)
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
40.6 C (105.1 F)
1919
38.3 C (100.9 F)
1920
37.2 C (99.0 F)
1921
26.7 C (80.1 F)
1922
n/a
1923
40.0 C (104.0 F)
1924
42.2 C (108.0 F)
1925
41.1 C (106.0 F)
1926
37.2 C (99.0 F)
1927
37.8 C (100.0 F)
1928
38.9 C (102.0 F)
1929
37.8 C (100.0 F)
1930
38.3 C (100.9 F)
1931
40.0 C (104.0 F)
1932
37.8 C (100.0 F)
1933
38.9 C (102.0 F)
1934
38.9 C (102.0 F)
1935
37.8 C (100.0 F)
1936
37.8 C (100.0 F)
1937
37.2 C (99.0 F)
1938
40.0 C (104.0 F)
1939
41.1 C (106.0 F)
1940
36.7 C (98.1 F)
1941
33.3 C (91.9 F)
1942
34.4 C (93.9 F)
1943
35.6 C (96.1 F)
1944
35.6 C (96.1 F)
1945
34.4 C (93.9 F)
1946
37.8 C (100.0 F)
1947
37.2 C (99.0 F)
1948
37.8 C (100.0 F)
1949
36.7 C (98.1 F)
1950
35.6 C (96.1 F)
1951
40.0 C (104.0 F)
1952
37.8 C (100.0 F)
1953
38.9 C (102.0 F)
1954
40.6 C (105.1 F)
1955
37.8 C (100.0 F)
1956
38.9 C (102.0 F)
1957
40.0 C (104.0 F)
1958
40.6 C (105.1 F)
1959
38.3 C (100.9 F)
1960
40.0 C (104.0 F)
1961
38.3 C (100.9 F)
1962
38.9 C (102.0 F)
1963
40.6 C (105.1 F)
1964
40.0 C (104.0 F)
1965
37.8 C (100.0 F)
1966
40.0 C (104.0 F)
1967
37.2 C (99.0 F)
1968
40.0 C (104.0 F)
1969
39.4 C (102.9 F)
1970
38.9 C (102.0 F)
1971
39.4 C (102.9 F)
1972
39.4 C (102.9 F)
1973
40.6 C (105.1 F)
1974
41.1 C (106.0 F)
1975
36.7 C (98.1 F)
1976
38.3 C (100.9 F)
1977
38.9 C (102.0 F)
1978
40.6 C (105.1 F)
1979
37.8 C (100.0 F)
1980
41.1 C (106.0 F)
1981
41.1 C (106.0 F)
1982
38.3 C (100.9 F)
1983
37.8 C (100.0 F)
1984
36.7 C (98.1 F)
1985
38.9 C (102.0 F)
1986
38.9 C (102.0 F)
1987
37.8 C (100.0 F)
1988
37.8 C (100.0 F)
1989
38.9 C (102.0 F)
1990
42.8 C (109.0 F)
1991
37.8 C (100.0 F)
1992
38.9 C (102.0 F)
1993
38.9 C (102.0 F)
1994
42.2 C (108.0 F)
1995
41.1 C (106.0 F)
1996
37.8 C (100.0 F)
1997
36.1 C (97.0 F)
1998
38.9 C (102.0 F)
1999
37.2 C (99.0 F)
2000
37.8 C (100.0 F)
2001
42.8 C (109.0 F)
2002
38.3 C (100.9 F)
2003
38.3 C (100.9 F)
2004
37.8 C (100.0 F)
2005
37.8 C (100.0 F)
2006
38.3 C (100.9 F)
2007
38.9 C (102.0 F)
2008
38.3 C (100.9 F)
2009
38.3 C (100.9 F)
2010
33.9 C (93.0 F)
2012
38.9 C (102.0 F)
2019
40.0 C (104.0 F)
2020
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Santa Rosa, 1913 to 2020. The record is -31.7 C (-25.1 F) in 1963, marked on the chart; the median year is -15.6 C (3.9 F).
Coldest night (TNn) at Santa Rosa by year
Year
Coldest night (TNn)
1913
n/a
1914
n/a
1915
n/a
1916
n/a
1917
n/a
1918
-21.1 C (-6.0 F)
1919
-23.9 C (-11.0 F)
1920
-13.3 C (8.1 F)
1921
-11.1 C (12.0 F)
1922
n/a
1923
-18.9 C (-2.0 F)
1924
-21.7 C (-7.1 F)
1925
-13.9 C (7.0 F)
1926
-11.7 C (10.9 F)
1927
-16.1 C (3.0 F)
1928
-13.3 C (8.1 F)
1929
-27.8 C (-18.0 F)
1930
-23.3 C (-9.9 F)
1931
-15.6 C (3.9 F)
1932
-17.8 C (0.0 F)
1933
-23.3 C (-9.9 F)
1934
-12.2 C (10.0 F)
1935
-16.7 C (1.9 F)
1936
-16.7 C (1.9 F)
1937
-15.6 C (3.9 F)
1938
-13.3 C (8.1 F)
1939
-18.9 C (-2.0 F)
1940
-11.1 C (12.0 F)
1941
-7.8 C (18.0 F)
1942
-15.6 C (3.9 F)
1943
-17.8 C (0.0 F)
1944
-11.1 C (12.0 F)
1945
-12.8 C (9.0 F)
1946
-10.0 C (14.0 F)
1947
-18.3 C (-0.9 F)
1948
-17.2 C (1.0 F)
1949
-20.6 C (-5.1 F)
1950
-15.0 C (5.0 F)
1951
-27.8 C (-18.0 F)
1952
-14.4 C (6.1 F)
1953
-16.7 C (1.9 F)
1954
-12.8 C (9.0 F)
1955
-13.9 C (7.0 F)
1956
-15.0 C (5.0 F)
1957
-15.0 C (5.0 F)
1958
-20.6 C (-5.1 F)
1959
-23.3 C (-9.9 F)
1960
-17.2 C (1.0 F)
1961
-17.2 C (1.0 F)
1962
-21.7 C (-7.1 F)
1963
-31.7 C (-25.1 F)
1964
-18.3 C (-0.9 F)
1965
-14.4 C (6.1 F)
1966
-22.8 C (-9.0 F)
1967
-14.4 C (6.1 F)
1968
-12.8 C (9.0 F)
1969
-16.1 C (3.0 F)
1970
-17.8 C (0.0 F)
1971
-25.0 C (-13.0 F)
1972
-15.0 C (5.0 F)
1973
-11.7 C (10.9 F)
1974
-15.6 C (3.9 F)
1975
-15.0 C (5.0 F)
1976
-16.1 C (3.0 F)
1977
-17.2 C (1.0 F)
1978
-25.0 C (-13.0 F)
1979
-28.3 C (-18.9 F)
1980
-12.8 C (9.0 F)
1981
-17.8 C (0.0 F)
1982
-20.0 C (-4.0 F)
1983
-21.1 C (-6.0 F)
1984
-16.1 C (3.0 F)
1985
-17.8 C (0.0 F)
1986
-22.2 C (-8.0 F)
1987
-19.4 C (-2.9 F)
1988
-11.7 C (10.9 F)
1989
-16.7 C (1.9 F)
1990
-27.2 C (-17.0 F)
1991
-11.7 C (10.9 F)
1992
-11.7 C (10.9 F)
1993
-12.2 C (10.0 F)
1994
-13.3 C (8.1 F)
1995
-11.1 C (12.0 F)
1996
-15.6 C (3.9 F)
1997
-21.7 C (-7.1 F)
1998
-15.6 C (3.9 F)
1999
-11.7 C (10.9 F)
2000
-16.7 C (1.9 F)
2001
-16.7 C (1.9 F)
2002
-13.9 C (7.0 F)
2003
-11.1 C (12.0 F)
2004
-15.0 C (5.0 F)
2005
-16.1 C (3.0 F)
2006
-12.8 C (9.0 F)
2007
-11.7 C (10.9 F)
2008
-14.4 C (6.1 F)
2009
-13.3 C (8.1 F)
2010
-13.9 C (7.0 F)
2012
-10.0 C (14.0 F)
2019
-13.3 C (8.1 F)
2020
-13.9 C (7.0 F)
Wettest day (Rx1day)
The wettest day of the year at Santa Rosa, 1913 to 2020. The record is 92.2 mm (3.6 in) in 1999, marked on the chart; the median year is 40.1 mm (1.6 in).
Wettest day (Rx1day) at Santa Rosa by year
Year
Wettest day (Rx1day)
1913
6.4 mm (0.25 in)
1914
50.8 mm (2.0 in)
1915
72.6 mm (2.9 in)
1916
20.3 mm (0.8 in)
1917
39.4 mm (1.6 in)
1918
53.3 mm (2.1 in)
1919
50.8 mm (2.0 in)
1920
40.6 mm (1.6 in)
1921
50.8 mm (2.0 in)
1922
30.0 mm (1.2 in)
1923
41.4 mm (1.6 in)
1924
29.2 mm (1.1 in)
1925
34.5 mm (1.4 in)
1926
39.4 mm (1.6 in)
1927
57.2 mm (2.3 in)
1928
49.8 mm (2.0 in)
1929
50.8 mm (2.0 in)
1930
83.8 mm (3.3 in)
1931
50.8 mm (2.0 in)
1932
45.7 mm (1.8 in)
1933
35.6 mm (1.4 in)
1934
31.8 mm (1.3 in)
1935
31.8 mm (1.3 in)
1936
27.2 mm (1.1 in)
1937
55.9 mm (2.2 in)
1938
52.1 mm (2.1 in)
1939
50.8 mm (2.0 in)
1940
35.6 mm (1.4 in)
1941
89.4 mm (3.5 in)
1942
66.5 mm (2.6 in)
1943
26.7 mm (1.1 in)
1944
35.6 mm (1.4 in)
1945
69.9 mm (2.8 in)
1946
78.7 mm (3.1 in)
1947
36.6 mm (1.4 in)
1948
19.3 mm (0.8 in)
1949
25.7 mm (1.0 in)
1950
30.0 mm (1.2 in)
1951
20.8 mm (0.8 in)
1952
47.0 mm (1.9 in)
1953
19.3 mm (0.8 in)
1954
50.0 mm (2.0 in)
1955
17.3 mm (0.7 in)
1956
73.9 mm (2.9 in)
1957
61.2 mm (2.4 in)
1958
41.4 mm (1.6 in)
1959
50.8 mm (2.0 in)
1960
59.2 mm (2.3 in)
1961
33.3 mm (1.3 in)
1962
22.6 mm (0.9 in)
1963
31.5 mm (1.2 in)
1964
26.4 mm (1.0 in)
1965
39.6 mm (1.6 in)
1966
76.2 mm (3.0 in)
1967
20.3 mm (0.8 in)
1968
74.4 mm (2.9 in)
1969
52.1 mm (2.1 in)
1970
35.1 mm (1.4 in)
1971
49.0 mm (1.9 in)
1972
35.6 mm (1.4 in)
1973
46.2 mm (1.8 in)
1974
32.0 mm (1.3 in)
1975
44.7 mm (1.8 in)
1976
88.9 mm (3.5 in)
1977
57.9 mm (2.3 in)
1978
64.3 mm (2.5 in)
1979
28.4 mm (1.1 in)
1980
58.2 mm (2.3 in)
1981
52.1 mm (2.1 in)
1982
32.0 mm (1.3 in)
1983
27.2 mm (1.1 in)
1984
39.6 mm (1.6 in)
1985
43.4 mm (1.7 in)
1986
31.5 mm (1.2 in)
1987
49.5 mm (1.9 in)
1988
35.1 mm (1.4 in)
1989
50.0 mm (2.0 in)
1990
25.1 mm (1.0 in)
1991
50.8 mm (2.0 in)
1992
45.2 mm (1.8 in)
1993
35.1 mm (1.4 in)
1994
40.1 mm (1.6 in)
1995
34.0 mm (1.3 in)
1996
38.6 mm (1.5 in)
1997
51.1 mm (2.0 in)
1998
32.8 mm (1.3 in)
1999
92.2 mm (3.6 in)
2000
49.0 mm (1.9 in)
2001
47.5 mm (1.9 in)
2002
65.5 mm (2.6 in)
2003
27.4 mm (1.1 in)
2004
62.0 mm (2.4 in)
2005
49.5 mm (1.9 in)
2006
15.5 mm (0.6 in)
2007
16.3 mm (0.6 in)
2008
26.7 mm (1.1 in)
2009
27.4 mm (1.1 in)
2010
15.0 mm (0.6 in)
2012
24.6 mm (1.0 in)
2019
33.5 mm (1.3 in)
2020
20.3 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Santa Rosa, 1913 to 2020. The record is 154.1 mm (6.1 in) in 1942, marked on the chart; the median year is 58.7 mm (2.3 in).
Wettest five days (Rx5day) at Santa Rosa by year
Year
Wettest five days (Rx5day)
1913
6.4 mm (0.25 in)
1914
81.5 mm (3.2 in)
1915
116.3 mm (4.6 in)
1916
43.2 mm (1.7 in)
1917
41.8 mm (1.6 in)
1918
60.9 mm (2.4 in)
1919
119.4 mm (4.7 in)
1920
52.0 mm (2.0 in)
1921
83.3 mm (3.3 in)
1922
41.1 mm (1.6 in)
1923
79.8 mm (3.1 in)
1924
35.6 mm (1.4 in)
1925
46.2 mm (1.8 in)
1926
58.7 mm (2.3 in)
1927
96.9 mm (3.8 in)
1928
75.5 mm (3.0 in)
1929
58.5 mm (2.3 in)
1930
101.9 mm (4.0 in)
1931
65.8 mm (2.6 in)
1932
84.6 mm (3.3 in)
1933
59.7 mm (2.4 in)
1934
53.4 mm (2.1 in)
1935
85.9 mm (3.4 in)
1936
49.1 mm (1.9 in)
1937
123.7 mm (4.9 in)
1938
86.6 mm (3.4 in)
1939
89.5 mm (3.5 in)
1940
54.4 mm (2.1 in)
1941
99.1 mm (3.9 in)
1942
154.1 mm (6.1 in)
1943
53.9 mm (2.1 in)
1944
35.6 mm (1.4 in)
1945
82.1 mm (3.2 in)
1946
86.1 mm (3.4 in)
1947
53.4 mm (2.1 in)
1948
24.7 mm (1.0 in)
1949
43.4 mm (1.7 in)
1950
46.5 mm (1.8 in)
1951
27.9 mm (1.1 in)
1952
51.8 mm (2.0 in)
1953
36.1 mm (1.4 in)
1954
62.2 mm (2.4 in)
1955
24.4 mm (1.0 in)
1956
89.4 mm (3.5 in)
1957
62.2 mm (2.4 in)
1958
93.2 mm (3.7 in)
1959
53.6 mm (2.1 in)
1960
110.0 mm (4.3 in)
1961
52.6 mm (2.1 in)
1962
54.9 mm (2.2 in)
1963
49.8 mm (2.0 in)
1964
37.3 mm (1.5 in)
1965
48.3 mm (1.9 in)
1966
99.1 mm (3.9 in)
1967
43.2 mm (1.7 in)
1968
75.4 mm (3.0 in)
1969
64.3 mm (2.5 in)
1970
35.1 mm (1.4 in)
1971
53.1 mm (2.1 in)
1972
79.6 mm (3.1 in)
1973
59.4 mm (2.3 in)
1974
60.2 mm (2.4 in)
1975
87.7 mm (3.5 in)
1976
95.8 mm (3.8 in)
1977
105.6 mm (4.2 in)
1978
72.4 mm (2.9 in)
1979
54.6 mm (2.1 in)
1980
66.7 mm (2.6 in)
1981
73.4 mm (2.9 in)
1982
67.5 mm (2.7 in)
1983
34.4 mm (1.4 in)
1984
64.5 mm (2.5 in)
1985
46.5 mm (1.8 in)
1986
65.5 mm (2.6 in)
1987
65.0 mm (2.6 in)
1988
41.5 mm (1.6 in)
1989
89.9 mm (3.5 in)
1990
41.4 mm (1.6 in)
1991
68.8 mm (2.7 in)
1992
51.9 mm (2.0 in)
1993
59.1 mm (2.3 in)
1994
57.1 mm (2.2 in)
1995
54.7 mm (2.2 in)
1996
40.6 mm (1.6 in)
1997
87.2 mm (3.4 in)
1998
65.3 mm (2.6 in)
1999
116.1 mm (4.6 in)
2000
91.9 mm (3.6 in)
2001
55.6 mm (2.2 in)
2002
103.3 mm (4.1 in)
2003
57.4 mm (2.3 in)
2004
76.7 mm (3.0 in)
2005
50.9 mm (2.0 in)
2006
21.1 mm (0.8 in)
2007
20.4 mm (0.8 in)
2008
42.2 mm (1.7 in)
2009
50.3 mm (2.0 in)
2010
26.1 mm (1.0 in)
2012
38.2 mm (1.5 in)
2019
48.7 mm (1.9 in)
2020
20.3 mm (0.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Santa Rosa, 1913 to 2020. The record is 130 days in 1921, marked on the chart; the median year is 48 days.
Longest dry spell (CDD) at Santa Rosa by year
Year
Longest dry spell (CDD)
1913
16 days
1914
37 days
1915
40 days
1916
72 days
1917
108 days
1918
87 days
1919
79 days
1920
74 days
1921
130 days
1922
62 days
1923
33 days
1924
31 days
1925
66 days
1926
49 days
1927
58 days
1928
37 days
1929
44 days
1930
34 days
1931
32 days
1932
51 days
1933
54 days
1934
98 days
1935
61 days
1936
69 days
1937
76 days
1938
68 days
1939
77 days
1940
48 days
1941
40 days
1942
47 days
1943
122 days
1944
31 days
1945
83 days
1946
55 days
1947
47 days
1948
61 days
1949
29 days
1950
59 days
1951
30 days
1952
41 days
1953
67 days
1954
80 days
1955
71 days
1956
74 days
1957
43 days
1958
41 days
1959
43 days
1960
46 days
1961
42 days
1962
33 days
1963
37 days
1964
51 days
1965
53 days
1966
83 days
1967
74 days
1968
47 days
1969
28 days
1970
48 days
1971
48 days
1972
83 days
1973
43 days
1974
46 days
1975
57 days
1976
34 days
1977
53 days
1978
33 days
1979
45 days
1980
35 days
1981
33 days
1982
69 days
1983
38 days
1984
46 days
1985
60 days
1986
35 days
1987
48 days
1988
38 days
1989
43 days
1990
48 days
1991
51 days
1992
43 days
1993
47 days
1994
36 days
1995
54 days
1996
129 days
1997
26 days
1998
64 days
1999
41 days
2000
75 days
2001
45 days
2002
57 days
2003
38 days
2004
75 days
2005
77 days
2006
71 days
2007
48 days
2008
41 days
2009
67 days
2010
24 days
2012
40 days
2019
16 days
2020
17 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
71 years with a frost
Across 71 years with a frost, the median last spring frost at Santa Rosa falls on 18 April and the median first autumn frost on 24 October, which leaves a median of 190 days between them.
In 1971 to 2009 the median growing season was 186 days. That is 11 days fewer than in 1919 to 1956.
Fitted over all years, the growing season changes by -2.6 days per decade at this station.
Frost dates and growing season at Santa Rosa
Measure
Median, all years
Earliest period (1919 to 1956)
Recent period (1971 to 2009)
Recent against earliest
Fitted trend
Last spring frost
18 April
12 April
22 April
10 days later
+1.2 days per decade
First autumn frost
24 October
27 October
20 October
7 days earlier
-1.5 days per decade
Growing days
190 days
197 days
186 days
11 days fewer
-2.6 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
90 years, 1915 to 2009
A day with at least 41.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 99.0 mm (3.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Santa Rosa: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
41.8 mm (1.6 in)
5 years
57.5 mm (2.3 in)
10 years
67.8 mm (2.7 in)
25 years
80.5 mm (3.2 in)
50 years
89.9 mm (3.5 in)
100 years
99.0 mm (3.9 in)
Longer than the 90 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, 90 years of values from 1915 to 2009.
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: 92.2 mm (3.6 in) in 1999; 89.4 mm (3.5 in) in 1941; 88.9 mm (3.5 in) in 1976.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Santa Rosa standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Santa Rosa 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.