Record envelope, standing records and threshold days for Middlewater (USC00045602), California, United States, with 52 years of record.
Key Facts for Middlewater
Middlewater (USC00045602) is a weather station in California, United States at 35.50 latitude and -119.82 longitude, 244 m (801 ft) above sea level.
The station reports from 1911 to 1962, 52 years of record.
1,464 records set at Middlewater still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Middlewater tied a daily record low maximum temperature of 11.1 C (52.0 F) on 28 February 1962.
About the Station
Location: California, United States, 35.50 latitude, -119.82 longitude.
Elevation: 244 m (801 ft).
Period of record: 1911 to 1962, 52 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 Middlewater. 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 Middlewater, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.9 C (84.0 F)
-8.9 C (16.0 F)
n/a
n/a
Feb
28.9 C (84.0 F)
-5.6 C (21.9 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-3.3 C (26.1 F)
n/a
n/a
Apr
37.8 C (100.0 F)
-3.9 C (25.0 F)
n/a
n/a
May
42.2 C (108.0 F)
1.1 C (34.0 F)
n/a
n/a
Jun
46.7 C (116.1 F)
1.1 C (34.0 F)
n/a
n/a
Jul
46.7 C (116.1 F)
8.9 C (48.0 F)
n/a
n/a
Aug
48.9 C (120.0 F)
5.0 C (41.0 F)
n/a
n/a
Sep
44.4 C (111.9 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
38.9 C (102.0 F)
-5.0 C (23.0 F)
n/a
n/a
Nov
35.0 C (95.0 F)
-8.9 C (16.0 F)
n/a
n/a
Dec
25.0 C (77.0 F)
-11.1 C (12.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Middlewater still stand. 1914 holds the most, with 101.
Standing records at Middlewater by the year they were set
Year set
Standing records
1911
46
1912
23
1913
79
1914
101
1915
27
1916
37
1917
29
1918
53
1919
21
1920
37
1921
47
1922
16
1923
56
1924
34
1925
56
1926
50
1927
51
1928
24
1929
51
1930
14
1931
14
1932
20
1933
37
1934
24
1935
14
1936
25
1937
14
1938
11
1939
16
1940
19
1941
7
1942
10
1943
17
1944
18
1945
9
1946
15
1947
17
1948
19
1949
26
1950
40
1951
18
1952
12
1953
20
1954
31
1955
38
1956
15
1957
14
1958
9
1959
21
1960
29
1961
23
1962
10
All-Time Record Progression
1 new records
1 all-time records were set at Middlewater between 28 January 1957 and 28 January 1957. Each dot is a new record.
When Middlewater set new all-time records
Date
Kind
Detail
1957-01-28
Record snow depth
Record snow depth 7.6 cm (3.0 in)
Wettest Day of Each Month
Feb: 40.6 mm (1.6 in)
The wettest day on record for each calendar month at Middlewater. The most was 40.6 mm (1.6 in) on 20 February 1918.
Record daily precipitation for each month at Middlewater
Month
Record daily precipitation (mm)
Date
Jan
32.3 mm (1.3 in)
19 January 1954
Feb
40.6 mm (1.6 in)
20 February 1918
Mar
32.8 mm (1.3 in)
30 March 1946
Apr
22.9 mm (0.9 in)
9 April 1912
May
22.1 mm (0.9 in)
9 May 1928
Jun
10.9 mm (0.4 in)
26 June 1913
Jul
8.1 mm (0.32 in)
10 July 1950
Aug
13.2 mm (0.5 in)
17 August 1958
Sep
25.7 mm (1.0 in)
8 September 1958
Oct
24.6 mm (1.0 in)
19 October 1936
Nov
33.0 mm (1.3 in)
26 November 1931
Dec
39.1 mm (1.5 in)
24 December 1955
Period of Record Coverage
1911 to 1962
Complete yearUnder 90 percent of days
52 years of record at Middlewater, 1911 to 1962. 3 years have data for under 90 percent of days and are left out of rankings: 1911, 1912, 1962.
Cooler than the station meanWarmer than the station mean
One stripe for each of 44 complete years at Middlewater, 1913 to 1961. Blue stripes are years cooler than the station's own mean of 17.9 C (64.2 F); red stripes are warmer. The coolest year was 1927, at 15.4 C (59.8 F), and the warmest was 1926, at 19.7 C (67.4 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Middlewater as warming stripes, 1913 to 1961
Year
Annual mean temperature
Difference from the station mean
1913
18.5 C
+0.60 C
1914
15.7 C
-2.18 C
1916
17.7 C
-0.15 C
1917
16.3 C
-1.60 C
1918
16.5 C
-1.35 C
1919
18.2 C
+0.27 C
1920
17.7 C
-0.19 C
1921
19.5 C
+1.57 C
1922
18.2 C
+0.33 C
1923
17.9 C
-0.03 C
1924
19.0 C
+1.11 C
1925
19.0 C
+1.11 C
1926
19.7 C
+1.79 C
1927
15.4 C
-2.46 C
1928
16.7 C
-1.22 C
1929
16.6 C
-1.25 C
1930
17.6 C
-0.29 C
1932
17.8 C
-0.10 C
1933
17.4 C
-0.47 C
1934
19.1 C
+1.19 C
1936
19.4 C
+1.54 C
1937
18.1 C
+0.23 C
1938
17.8 C
-0.14 C
1939
18.8 C
+0.90 C
1940
19.0 C
+1.14 C
1942
17.7 C
-0.16 C
1943
18.0 C
+0.10 C
1944
17.7 C
-0.24 C
1945
18.1 C
+0.22 C
1946
17.7 C
-0.23 C
1947
17.9 C
+0.04 C
1949
17.7 C
-0.15 C
1950
18.4 C
+0.52 C
1951
18.0 C
+0.09 C
1952
17.5 C
-0.38 C
1953
17.1 C
-0.82 C
1954
16.9 C
-0.98 C
1955
17.0 C
-0.90 C
1956
17.5 C
-0.35 C
1957
17.7 C
-0.18 C
1958
18.6 C
+0.66 C
1959
19.2 C
+1.32 C
1960
18.6 C
+0.75 C
1961
18.1 C
+0.25 C
The fitted trend in annual mean temperature here over 1913 to 1961 is 0.1 C (-0.1 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.2 to 0.5) per decade. The slope is a straight line fitted to 44 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Middlewater
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.2 to 0.5) per decade
1913 to 1961
44
Not clearly different from zero
Mean daily maximum
0.02 C (-0.23 to 0.27) per decade
0.03 F (-0.42 to 0.48) per decade
1913 to 1961
44
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.4) per decade
0.3 F (-0.2 to 0.7) per decade
1913 to 1961
44
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
1911 to 1962
Yearly extremes at Middlewater: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
48.9 C (120.0 F)
1920
43.9 C (111.0 F)
52
Coldest night (TNn)
-11.1 C (12.0 F)
1914
-5.0 C (23.0 F)
52
Wettest day (Rx1day)
40.6 mm (1.6 in)
1918
21.3 mm (0.8 in)
52
Wettest five days (Rx5day)
93.5 mm (3.7 in)
1918
33.4 mm (1.3 in)
52
Longest dry spell (CDD)
230 days
1937
150 days
52
Hottest day (TXx)
The hottest day of the year at Middlewater, 1911 to 1962. The record is 48.9 C (120.0 F) in 1920, marked on the chart; the median year is 43.9 C (111.0 F).
Hottest day (TXx) at Middlewater by year
Year
Hottest day (TXx)
1911
33.9 C (93.0 F)
1912
46.1 C (115.0 F)
1913
45.6 C (114.1 F)
1914
44.4 C (111.9 F)
1915
43.9 C (111.0 F)
1916
47.2 C (117.0 F)
1917
44.4 C (111.9 F)
1918
42.2 C (108.0 F)
1919
42.8 C (109.0 F)
1920
48.9 C (120.0 F)
1921
43.9 C (111.0 F)
1922
44.4 C (111.9 F)
1923
44.4 C (111.9 F)
1924
44.4 C (111.9 F)
1925
46.7 C (116.1 F)
1926
44.4 C (111.9 F)
1927
40.6 C (105.1 F)
1928
42.2 C (108.0 F)
1929
42.8 C (109.0 F)
1930
44.4 C (111.9 F)
1931
45.0 C (113.0 F)
1932
43.9 C (111.0 F)
1933
46.1 C (115.0 F)
1934
43.3 C (109.9 F)
1935
44.4 C (111.9 F)
1936
45.6 C (114.1 F)
1937
43.9 C (111.0 F)
1938
45.0 C (113.0 F)
1939
43.9 C (111.0 F)
1940
43.9 C (111.0 F)
1941
43.9 C (111.0 F)
1942
45.6 C (114.1 F)
1943
42.8 C (109.0 F)
1944
42.8 C (109.0 F)
1945
43.9 C (111.0 F)
1946
43.9 C (111.0 F)
1947
42.2 C (108.0 F)
1948
43.3 C (109.9 F)
1949
42.8 C (109.0 F)
1950
45.6 C (114.1 F)
1951
42.8 C (109.0 F)
1952
41.7 C (107.1 F)
1953
43.3 C (109.9 F)
1954
46.7 C (116.1 F)
1955
44.4 C (111.9 F)
1956
44.4 C (111.9 F)
1957
43.9 C (111.0 F)
1958
42.8 C (109.0 F)
1959
45.6 C (114.1 F)
1960
45.0 C (113.0 F)
1961
45.6 C (114.1 F)
1962
23.3 C (73.9 F)
Coldest night (TNn)
The coldest night of the year at Middlewater, 1911 to 1962. The record is -11.1 C (12.0 F) in 1914, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Middlewater by year
Year
Coldest night (TNn)
1911
-8.9 C (16.0 F)
1912
-4.4 C (24.1 F)
1913
-8.9 C (16.0 F)
1914
-11.1 C (12.0 F)
1915
-5.6 C (21.9 F)
1916
-5.6 C (21.9 F)
1917
-6.1 C (21.0 F)
1918
-7.8 C (18.0 F)
1919
-5.0 C (23.0 F)
1920
-3.9 C (25.0 F)
1921
-5.6 C (21.9 F)
1922
-5.6 C (21.9 F)
1923
-4.4 C (24.1 F)
1924
-6.7 C (19.9 F)
1925
-4.4 C (24.1 F)
1926
-3.9 C (25.0 F)
1927
-2.8 C (27.0 F)
1928
-5.0 C (23.0 F)
1929
-7.2 C (19.0 F)
1930
-6.7 C (19.9 F)
1931
-3.9 C (25.0 F)
1932
-5.0 C (23.0 F)
1933
-5.6 C (21.9 F)
1934
-6.7 C (19.9 F)
1935
-5.0 C (23.0 F)
1936
-0.6 C (30.9 F)
1937
-7.2 C (19.0 F)
1938
-3.3 C (26.1 F)
1939
-1.7 C (28.9 F)
1940
-4.4 C (24.1 F)
1941
-1.1 C (30.0 F)
1942
-4.4 C (24.1 F)
1943
-5.6 C (21.9 F)
1944
-1.7 C (28.9 F)
1945
-4.4 C (24.1 F)
1946
-5.0 C (23.0 F)
1947
-3.3 C (26.1 F)
1948
-5.0 C (23.0 F)
1949
-8.9 C (16.0 F)
1950
-6.7 C (19.9 F)
1951
-5.0 C (23.0 F)
1952
-4.4 C (24.1 F)
1953
-3.9 C (25.0 F)
1954
-5.6 C (21.9 F)
1955
-6.7 C (19.9 F)
1956
-6.1 C (21.0 F)
1957
-6.1 C (21.0 F)
1958
-2.8 C (27.0 F)
1959
-3.9 C (25.0 F)
1960
-6.1 C (21.0 F)
1961
-5.6 C (21.9 F)
1962
-7.8 C (18.0 F)
Wettest day (Rx1day)
The wettest day of the year at Middlewater, 1911 to 1962. The record is 40.6 mm (1.6 in) in 1918, marked on the chart; the median year is 21.3 mm (0.8 in).
Wettest day (Rx1day) at Middlewater by year
Year
Wettest day (Rx1day)
1911
8.9 mm (0.35 in)
1912
24.1 mm (0.9 in)
1913
27.2 mm (1.1 in)
1914
27.2 mm (1.1 in)
1915
29.2 mm (1.1 in)
1916
19.3 mm (0.8 in)
1917
8.4 mm (0.33 in)
1918
40.6 mm (1.6 in)
1919
25.4 mm (1.0 in)
1920
19.3 mm (0.8 in)
1921
12.7 mm (0.5 in)
1922
30.5 mm (1.2 in)
1923
12.2 mm (0.5 in)
1924
11.7 mm (0.5 in)
1925
15.2 mm (0.6 in)
1926
17.5 mm (0.7 in)
1927
21.8 mm (0.9 in)
1928
22.1 mm (0.9 in)
1929
4.8 mm (0.19 in)
1930
21.3 mm (0.8 in)
1931
33.0 mm (1.3 in)
1932
10.2 mm (0.4 in)
1933
20.6 mm (0.8 in)
1934
21.8 mm (0.9 in)
1935
16.5 mm (0.6 in)
1936
24.6 mm (1.0 in)
1937
22.1 mm (0.9 in)
1938
18.0 mm (0.7 in)
1939
21.8 mm (0.9 in)
1940
10.9 mm (0.4 in)
1941
30.0 mm (1.2 in)
1942
18.0 mm (0.7 in)
1943
21.1 mm (0.8 in)
1944
29.0 mm (1.1 in)
1945
23.4 mm (0.9 in)
1946
32.8 mm (1.3 in)
1947
6.6 mm (0.26 in)
1948
9.4 mm (0.37 in)
1949
16.3 mm (0.6 in)
1950
11.4 mm (0.4 in)
1951
7.6 mm (0.30 in)
1952
29.0 mm (1.1 in)
1953
15.5 mm (0.6 in)
1954
32.3 mm (1.3 in)
1955
39.1 mm (1.5 in)
1956
21.3 mm (0.8 in)
1957
14.5 mm (0.6 in)
1958
25.7 mm (1.0 in)
1959
14.0 mm (0.6 in)
1960
31.0 mm (1.2 in)
1961
28.7 mm (1.1 in)
1962
37.6 mm (1.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Middlewater, 1911 to 1962. The record is 93.5 mm (3.7 in) in 1918, marked on the chart; the median year is 33.4 mm (1.3 in).
Wettest five days (Rx5day) at Middlewater by year
Year
Wettest five days (Rx5day)
1911
10.4 mm (0.4 in)
1912
49.3 mm (1.9 in)
1913
56.7 mm (2.2 in)
1914
54.1 mm (2.1 in)
1915
45.5 mm (1.8 in)
1916
41.4 mm (1.6 in)
1917
16.2 mm (0.6 in)
1918
93.5 mm (3.7 in)
1919
37.3 mm (1.5 in)
1920
33.2 mm (1.3 in)
1921
33.5 mm (1.3 in)
1922
34.3 mm (1.4 in)
1923
13.5 mm (0.5 in)
1924
24.1 mm (0.9 in)
1925
15.7 mm (0.6 in)
1926
23.9 mm (0.9 in)
1927
43.1 mm (1.7 in)
1928
22.1 mm (0.9 in)
1929
6.8 mm (0.27 in)
1930
37.8 mm (1.5 in)
1931
34.5 mm (1.4 in)
1932
20.4 mm (0.8 in)
1933
62.0 mm (2.4 in)
1934
40.1 mm (1.6 in)
1935
21.9 mm (0.9 in)
1936
46.5 mm (1.8 in)
1937
29.5 mm (1.2 in)
1938
35.7 mm (1.4 in)
1939
29.4 mm (1.2 in)
1940
18.8 mm (0.7 in)
1941
37.1 mm (1.5 in)
1942
33.1 mm (1.3 in)
1943
61.6 mm (2.4 in)
1944
53.9 mm (2.1 in)
1945
45.3 mm (1.8 in)
1946
35.6 mm (1.4 in)
1947
9.6 mm (0.38 in)
1948
12.7 mm (0.5 in)
1949
20.9 mm (0.8 in)
1950
21.1 mm (0.8 in)
1951
12.9 mm (0.5 in)
1952
46.8 mm (1.8 in)
1953
16.3 mm (0.6 in)
1954
53.4 mm (2.1 in)
1955
49.2 mm (1.9 in)
1956
27.4 mm (1.1 in)
1957
22.4 mm (0.9 in)
1958
25.9 mm (1.0 in)
1959
20.6 mm (0.8 in)
1960
40.9 mm (1.6 in)
1961
32.3 mm (1.3 in)
1962
82.1 mm (3.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Middlewater, 1911 to 1962. The record is 230 days in 1937, marked on the chart; the median year is 150 days.
Longest dry spell (CDD) at Middlewater by year
Year
Longest dry spell (CDD)
1911
47 days
1912
98 days
1913
99 days
1914
90 days
1915
205 days
1916
61 days
1917
171 days
1918
191 days
1919
73 days
1920
129 days
1921
118 days
1922
171 days
1923
178 days
1924
146 days
1925
128 days
1926
154 days
1927
171 days
1928
144 days
1929
101 days
1930
135 days
1931
156 days
1932
156 days
1933
146 days
1934
133 days
1935
128 days
1936
99 days
1937
230 days
1938
148 days
1939
130 days
1940
180 days
1941
93 days
1942
179 days
1943
192 days
1944
172 days
1945
193 days
1946
126 days
1947
187 days
1948
186 days
1949
174 days
1950
105 days
1951
177 days
1952
151 days
1953
200 days
1954
197 days
1955
188 days
1956
144 days
1957
122 days
1958
86 days
1959
221 days
1960
160 days
1961
183 days
1962
19 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
42 years with a frost
Across 42 years with a frost, the median last spring frost at Middlewater falls on 19 February and the median first autumn frost on 24 November, which leaves a median of 277 days between them.
Fitted over all years, the growing season changes by +0.8 days per decade at this station.
Frost dates and growing season at Middlewater
Measure
Median, all years
Earliest period
Recent period (1928 to 1961)
Recent against earliest
Fitted trend
Last spring frost
19 February
n/a
19 February
n/a
-0.3 days per decade
First autumn frost
24 November
n/a
23 November
n/a
+0.5 days per decade
Growing days
277 days
n/a
280 days
n/a
+0.8 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
49 years, 1913 to 1961
A day with at least 20.6 mm (0.8 in) of rain is expected about once in 2 years. A day with at least 41.5 mm (1.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Middlewater: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
20.6 mm (0.8 in)
5 years
28.3 mm (1.1 in)
10 years
32.4 mm (1.3 in)
25 years
36.7 mm (1.4 in)
50 years
39.3 mm (1.5 in)
Longer than the 49 years of record
100 years
41.5 mm (1.6 in)
Longer than the 49 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, 49 years of values from 1913 to 1961.
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: 40.6 mm (1.6 in) in 1918; 39.1 mm (1.5 in) in 1955; 33.0 mm (1.3 in) in 1931.
Download the Data
Data for Middlewater standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Middlewater 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.