Record envelope, standing records and threshold days for Richmond Wtr Wks (USC00127362), Indiana, United States, with 73 years of record.
Key Facts for Richmond Wtr Wks
Richmond Wtr Wks (USC00127362) is a weather station in Indiana, United States at 39.85 latitude and -84.85 longitude, 296 m (971 ft) above sea level.
The station reports from 1896 to 1968, 73 years of record.
1,464 records set at Richmond Wtr Wks still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Richmond Wtr Wks set a daily record precipitation of 43.9 mm (1.7 in) on 9 September 1968.
About the Station
Location: Indiana, United States, 39.85 latitude, -84.85 longitude.
Elevation: 296 m (971 ft).
Period of record: 1896 to 1968, 73 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 Richmond Wtr Wks. 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 Richmond Wtr Wks, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.2 C (72.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-22.8 C (-9.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-10.6 C (12.9 F)
n/a
n/a
May
36.7 C (98.1 F)
-5.0 C (23.0 F)
n/a
n/a
Jun
38.3 C (100.9 F)
1.7 C (35.1 F)
n/a
n/a
Jul
39.4 C (102.9 F)
6.7 C (44.1 F)
n/a
n/a
Aug
37.8 C (100.0 F)
2.8 C (37.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
30.0 C (86.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-31.1 C (-24.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Richmond Wtr Wks still stand. 1899 holds the most, with 41.
Standing records at Richmond Wtr Wks by the year they were set
Year set
Standing records
1896
6
1897
35
1898
18
1899
41
1900
18
1901
29
1902
25
1903
22
1904
21
1905
14
1906
33
1907
20
1908
37
1909
13
1910
27
1911
25
1912
17
1913
36
1914
24
1915
20
1916
22
1917
38
1918
33
1919
12
1920
17
1921
20
1922
10
1923
22
1924
22
1925
35
1926
15
1927
28
1928
23
1929
22
1930
40
1931
23
1932
16
1933
13
1934
29
1935
22
1936
36
1937
12
1938
10
1939
10
1940
25
1941
16
1942
20
1943
21
1944
10
1945
15
1946
12
1947
16
1948
17
1949
10
1950
24
1951
19
1952
19
1953
11
1954
13
1955
16
1956
19
1957
12
1958
12
1959
17
1960
21
1961
11
1962
15
1963
15
1964
14
1965
15
1966
15
1967
15
1968
8
All-Time Record Progression
1 new records
1 all-time records were set at Richmond Wtr Wks between 21 July 1934 and 21 July 1934. Each dot is a new record.
When Richmond Wtr Wks set new all-time records
Date
Kind
Detail
1934-07-21
Record high maximum temperature
Record high maximum temperature 39.4 C (102.9 F)
Wettest Day of Each Month
Mar: 134.6 mm (5.3 in)
The wettest day on record for each calendar month at Richmond Wtr Wks. The most was 134.6 mm (5.3 in) on 24 March 1913.
Record daily precipitation for each month at Richmond Wtr Wks
Month
Record daily precipitation (mm)
Date
Jan
87.1 mm (3.4 in)
4 January 1949
Feb
48.0 mm (1.9 in)
25 February 1961
Mar
134.6 mm (5.3 in)
24 March 1913
Apr
62.7 mm (2.5 in)
20 April 1916
May
79.5 mm (3.1 in)
23 May 1968
Jun
94.5 mm (3.7 in)
28 June 1957
Jul
82.8 mm (3.3 in)
13 July 1914
Aug
123.7 mm (4.9 in)
7 August 1896
Sep
114.6 mm (4.5 in)
1 September 1926
Oct
103.6 mm (4.1 in)
5 October 1910
Nov
74.9 mm (2.9 in)
16 November 1955
Dec
60.7 mm (2.4 in)
30 December 1932
Period of Record Coverage
1896 to 1968
Complete yearUnder 90 percent of days
73 years of record at Richmond Wtr Wks, 1896 to 1968. 1 years have data for under 90 percent of days and are left out of rankings: 1896.
Cooler than the station meanWarmer than the station mean
One stripe for each of 70 complete years at Richmond Wtr Wks, 1897 to 1967. Blue stripes are years cooler than the station's own mean of 10.4 C (50.7 F); red stripes are warmer. The coolest year was 1917, at 8.1 C (46.6 F), and the warmest was 1921, at 12.0 C (53.6 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Richmond Wtr Wks as warming stripes, 1897 to 1967
Year
Annual mean temperature
Difference from the station mean
1897
11.0 C
+0.60 C
1898
11.3 C
+0.93 C
1899
11.1 C
+0.71 C
1900
11.2 C
+0.85 C
1901
10.4 C
-0.03 C
1902
11.0 C
+0.56 C
1903
10.4 C
+0.04 C
1904
9.3 C
-1.11 C
1905
10.3 C
-0.06 C
1906
10.8 C
+0.45 C
1907
10.2 C
-0.18 C
1908
11.3 C
+0.87 C
1909
10.5 C
+0.13 C
1910
10.0 C
-0.36 C
1911
11.3 C
+0.92 C
1912
9.5 C
-0.87 C
1913
11.5 C
+1.10 C
1914
10.0 C
-0.41 C
1915
9.7 C
-0.65 C
1916
9.8 C
-0.57 C
1917
8.1 C
-2.27 C
1918
10.0 C
-0.38 C
1919
10.5 C
+0.13 C
1920
9.5 C
-0.93 C
1921
12.0 C
+1.62 C
1922
10.8 C
+0.44 C
1923
10.1 C
-0.33 C
1924
8.9 C
-1.51 C
1925
10.2 C
-0.19 C
1926
9.4 C
-0.96 C
1927
10.4 C
+0.05 C
1928
9.7 C
-0.68 C
1929
9.6 C
-0.84 C
1930
10.5 C
+0.15 C
1931
11.8 C
+1.39 C
1932
10.6 C
+0.19 C
1933
11.2 C
+0.79 C
1934
10.6 C
+0.24 C
1935
10.1 C
-0.32 C
1936
10.2 C
-0.17 C
1937
9.9 C
-0.45 C
1938
11.2 C
+0.79 C
1939
10.9 C
+0.54 C
1940
9.5 C
-0.89 C
1941
11.0 C
+0.59 C
1942
10.5 C
+0.14 C
1943
9.8 C
-0.58 C
1944
10.7 C
+0.27 C
1945
9.9 C
-0.52 C
1946
11.2 C
+0.81 C
1947
10.0 C
-0.42 C
1948
10.4 C
-0.03 C
1949
11.4 C
+0.97 C
1950
9.6 C
-0.76 C
1951
9.9 C
-0.50 C
1952
10.9 C
+0.50 C
1953
11.4 C
+1.00 C
1954
11.4 C
+1.00 C
1955
10.9 C
+0.49 C
1956
10.6 C
+0.25 C
1957
10.6 C
+0.22 C
1958
9.2 C
-1.18 C
1959
10.8 C
+0.38 C
1960
9.7 C
-0.66 C
1961
10.2 C
-0.21 C
1962
10.0 C
-0.41 C
1963
9.4 C
-1.01 C
1964
10.8 C
+0.42 C
1965
10.8 C
+0.37 C
1967
9.9 C
-0.53 C
The fitted trend in annual mean temperature here over 1897 to 1967 is -0.02 C (-0.11 to 0.06) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.04 F (-0.20 to 0.12) 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 Richmond Wtr Wks
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.02 C (-0.11 to 0.06) per decade
-0.04 F (-0.20 to 0.12) per decade
1897 to 1967
70
Not clearly different from zero
Mean daily maximum
-0.08 C (-0.18 to 0.02) per decade
-0.14 F (-0.32 to 0.04) per decade
1897 to 1967
70
Not clearly different from zero
Mean daily minimum
0.03 C (-0.06 to 0.12) per decade
0.1 F (-0.1 to 0.2) per decade
1897 to 1967
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
1896 to 1968
Yearly extremes at Richmond Wtr Wks: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
1934
35.0 C (95.0 F)
73
Coldest night (TNn)
-32.8 C (-27.0 F)
1899
-23.9 C (-11.0 F)
73
Wettest day (Rx1day)
134.6 mm (5.3 in)
1913
57.9 mm (2.3 in)
73
Wettest five days (Rx5day)
283.2 mm (11.1 in)
1913
96.0 mm (3.8 in)
73
Longest dry spell (CDD)
41 days
1908
18 days
73
Hottest day (TXx)
The hottest day of the year at Richmond Wtr Wks, 1896 to 1968. The record is 39.4 C (102.9 F) in 1934, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Richmond Wtr Wks by year
Year
Hottest day (TXx)
1896
35.6 C (96.1 F)
1897
37.2 C (99.0 F)
1898
35.6 C (96.1 F)
1899
36.7 C (98.1 F)
1900
35.6 C (96.1 F)
1901
38.9 C (102.0 F)
1902
34.4 C (93.9 F)
1903
34.4 C (93.9 F)
1904
33.9 C (93.0 F)
1905
35.0 C (95.0 F)
1906
35.0 C (95.0 F)
1907
33.3 C (91.9 F)
1908
35.0 C (95.0 F)
1909
32.8 C (91.0 F)
1910
35.0 C (95.0 F)
1911
37.8 C (100.0 F)
1912
34.4 C (93.9 F)
1913
36.7 C (98.1 F)
1914
37.8 C (100.0 F)
1915
33.3 C (91.9 F)
1916
37.2 C (99.0 F)
1917
35.0 C (95.0 F)
1918
37.8 C (100.0 F)
1919
36.1 C (97.0 F)
1920
33.3 C (91.9 F)
1921
37.2 C (99.0 F)
1922
34.4 C (93.9 F)
1923
34.4 C (93.9 F)
1924
34.4 C (93.9 F)
1925
35.6 C (96.1 F)
1926
35.0 C (95.0 F)
1927
35.0 C (95.0 F)
1928
33.3 C (91.9 F)
1929
33.9 C (93.0 F)
1930
37.8 C (100.0 F)
1931
37.2 C (99.0 F)
1932
34.4 C (93.9 F)
1933
37.2 C (99.0 F)
1934
39.4 C (102.9 F)
1935
35.0 C (95.0 F)
1936
38.9 C (102.0 F)
1937
32.8 C (91.0 F)
1938
31.7 C (89.1 F)
1939
34.4 C (93.9 F)
1940
35.6 C (96.1 F)
1941
36.1 C (97.0 F)
1942
35.6 C (96.1 F)
1943
33.3 C (91.9 F)
1944
36.1 C (97.0 F)
1945
33.3 C (91.9 F)
1946
34.4 C (93.9 F)
1947
35.6 C (96.1 F)
1948
34.4 C (93.9 F)
1949
33.3 C (91.9 F)
1950
30.6 C (87.1 F)
1951
35.6 C (96.1 F)
1952
36.1 C (97.0 F)
1953
35.6 C (96.1 F)
1954
37.8 C (100.0 F)
1955
35.0 C (95.0 F)
1956
35.0 C (95.0 F)
1957
34.4 C (93.9 F)
1958
33.3 C (91.9 F)
1959
34.4 C (93.9 F)
1960
33.3 C (91.9 F)
1961
33.3 C (91.9 F)
1962
36.1 C (97.0 F)
1963
34.4 C (93.9 F)
1964
36.1 C (97.0 F)
1965
35.6 C (96.1 F)
1966
35.6 C (96.1 F)
1967
34.4 C (93.9 F)
1968
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Richmond Wtr Wks, 1896 to 1968. The record is -32.8 C (-27.0 F) in 1899, marked on the chart; the median year is -23.9 C (-11.0 F).
Coldest night (TNn) at Richmond Wtr Wks by year
Year
Coldest night (TNn)
1896
-12.2 C (10.0 F)
1897
-25.6 C (-14.1 F)
1898
-31.1 C (-24.0 F)
1899
-32.8 C (-27.0 F)
1900
-21.7 C (-7.1 F)
1901
-26.7 C (-16.1 F)
1902
-20.6 C (-5.1 F)
1903
-25.0 C (-13.0 F)
1904
-32.2 C (-26.0 F)
1905
-26.7 C (-16.1 F)
1906
-26.1 C (-15.0 F)
1907
-18.9 C (-2.0 F)
1908
-17.8 C (0.0 F)
1909
-24.4 C (-11.9 F)
1910
-26.1 C (-15.0 F)
1911
-21.7 C (-7.1 F)
1912
-31.7 C (-25.1 F)
1913
-20.0 C (-4.0 F)
1914
-24.4 C (-11.9 F)
1915
-27.8 C (-18.0 F)
1916
-23.9 C (-11.0 F)
1917
-29.4 C (-20.9 F)
1918
-30.6 C (-23.1 F)
1919
-18.3 C (-0.9 F)
1920
-20.0 C (-4.0 F)
1921
-11.1 C (12.0 F)
1922
-21.1 C (-6.0 F)
1923
-18.9 C (-2.0 F)
1924
-26.1 C (-15.0 F)
1925
-21.1 C (-6.0 F)
1926
-25.0 C (-13.0 F)
1927
-22.2 C (-8.0 F)
1928
-20.6 C (-5.1 F)
1929
-25.0 C (-13.0 F)
1930
-25.6 C (-14.1 F)
1931
-17.2 C (1.0 F)
1932
-26.1 C (-15.0 F)
1933
-21.1 C (-6.0 F)
1934
-27.8 C (-18.0 F)
1935
-22.2 C (-8.0 F)
1936
-27.2 C (-17.0 F)
1937
-16.7 C (1.9 F)
1938
-20.6 C (-5.1 F)
1939
-19.4 C (-2.9 F)
1940
-23.9 C (-11.0 F)
1941
-16.1 C (3.0 F)
1942
-21.7 C (-7.1 F)
1943
-22.8 C (-9.0 F)
1944
-25.0 C (-13.0 F)
1945
-23.3 C (-9.9 F)
1946
-22.8 C (-9.0 F)
1947
-18.3 C (-0.9 F)
1948
-27.2 C (-17.0 F)
1949
-16.1 C (3.0 F)
1950
-22.2 C (-8.0 F)
1951
-25.6 C (-14.1 F)
1952
-15.0 C (5.0 F)
1953
-17.8 C (0.0 F)
1954
-16.1 C (3.0 F)
1955
-23.9 C (-11.0 F)
1956
-18.9 C (-2.0 F)
1957
-22.8 C (-9.0 F)
1958
-26.1 C (-15.0 F)
1959
-23.9 C (-11.0 F)
1960
-23.9 C (-11.0 F)
1961
-26.1 C (-15.0 F)
1962
-25.0 C (-13.0 F)
1963
-30.6 C (-23.1 F)
1964
-25.0 C (-13.0 F)
1965
-26.7 C (-16.1 F)
1966
-23.3 C (-9.9 F)
1967
-20.6 C (-5.1 F)
1968
-24.4 C (-11.9 F)
Wettest day (Rx1day)
The wettest day of the year at Richmond Wtr Wks, 1896 to 1968. The record is 134.6 mm (5.3 in) in 1913, marked on the chart; the median year is 57.9 mm (2.3 in).
Wettest day (Rx1day) at Richmond Wtr Wks by year
Year
Wettest day (Rx1day)
1896
123.7 mm (4.9 in)
1897
55.9 mm (2.2 in)
1898
105.2 mm (4.1 in)
1899
94.2 mm (3.7 in)
1900
48.3 mm (1.9 in)
1901
53.8 mm (2.1 in)
1902
56.9 mm (2.2 in)
1903
43.4 mm (1.7 in)
1904
75.2 mm (3.0 in)
1905
57.9 mm (2.3 in)
1906
35.1 mm (1.4 in)
1907
69.1 mm (2.7 in)
1908
46.2 mm (1.8 in)
1909
46.2 mm (1.8 in)
1910
103.6 mm (4.1 in)
1911
60.5 mm (2.4 in)
1912
40.1 mm (1.6 in)
1913
134.6 mm (5.3 in)
1914
82.8 mm (3.3 in)
1915
74.7 mm (2.9 in)
1916
65.8 mm (2.6 in)
1917
51.6 mm (2.0 in)
1918
53.8 mm (2.1 in)
1919
58.4 mm (2.3 in)
1920
57.4 mm (2.3 in)
1921
39.6 mm (1.6 in)
1922
79.2 mm (3.1 in)
1923
61.0 mm (2.4 in)
1924
68.3 mm (2.7 in)
1925
48.3 mm (1.9 in)
1926
114.6 mm (4.5 in)
1927
51.3 mm (2.0 in)
1928
53.3 mm (2.1 in)
1929
49.0 mm (1.9 in)
1930
48.8 mm (1.9 in)
1931
36.1 mm (1.4 in)
1932
76.7 mm (3.0 in)
1933
50.8 mm (2.0 in)
1934
69.1 mm (2.7 in)
1935
58.4 mm (2.3 in)
1936
43.7 mm (1.7 in)
1937
70.9 mm (2.8 in)
1938
68.3 mm (2.7 in)
1939
81.5 mm (3.2 in)
1940
34.8 mm (1.4 in)
1941
74.9 mm (2.9 in)
1942
49.5 mm (1.9 in)
1943
64.8 mm (2.6 in)
1944
70.9 mm (2.8 in)
1945
54.6 mm (2.1 in)
1946
43.2 mm (1.7 in)
1947
61.0 mm (2.4 in)
1948
55.4 mm (2.2 in)
1949
87.1 mm (3.4 in)
1950
65.0 mm (2.6 in)
1951
49.0 mm (1.9 in)
1952
56.4 mm (2.2 in)
1953
35.8 mm (1.4 in)
1954
38.1 mm (1.5 in)
1955
74.9 mm (2.9 in)
1956
52.1 mm (2.1 in)
1957
94.5 mm (3.7 in)
1958
80.8 mm (3.2 in)
1959
70.6 mm (2.8 in)
1960
24.4 mm (1.0 in)
1961
84.3 mm (3.3 in)
1962
53.1 mm (2.1 in)
1963
73.4 mm (2.9 in)
1964
61.5 mm (2.4 in)
1965
40.9 mm (1.6 in)
1966
52.1 mm (2.1 in)
1967
53.6 mm (2.1 in)
1968
79.5 mm (3.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Richmond Wtr Wks, 1896 to 1968. The record is 283.2 mm (11.1 in) in 1913, marked on the chart; the median year is 96.0 mm (3.8 in).
Wettest five days (Rx5day) at Richmond Wtr Wks by year
Year
Wettest five days (Rx5day)
1896
163.3 mm (6.4 in)
1897
85.2 mm (3.4 in)
1898
169.4 mm (6.7 in)
1899
99.3 mm (3.9 in)
1900
101.4 mm (4.0 in)
1901
68.8 mm (2.7 in)
1902
149.9 mm (5.9 in)
1903
80.5 mm (3.2 in)
1904
96.8 mm (3.8 in)
1905
105.9 mm (4.2 in)
1906
75.5 mm (3.0 in)
1907
110.0 mm (4.3 in)
1908
72.9 mm (2.9 in)
1909
83.5 mm (3.3 in)
1910
162.5 mm (6.4 in)
1911
73.2 mm (2.9 in)
1912
70.4 mm (2.8 in)
1913
283.2 mm (11.1 in)
1914
95.5 mm (3.8 in)
1915
91.2 mm (3.6 in)
1916
116.9 mm (4.6 in)
1917
69.3 mm (2.7 in)
1918
68.8 mm (2.7 in)
1919
112.0 mm (4.4 in)
1920
102.1 mm (4.0 in)
1921
82.4 mm (3.2 in)
1922
84.8 mm (3.3 in)
1923
79.0 mm (3.1 in)
1924
88.3 mm (3.5 in)
1925
81.1 mm (3.2 in)
1926
176.8 mm (7.0 in)
1927
82.1 mm (3.2 in)
1928
87.9 mm (3.5 in)
1929
72.4 mm (2.9 in)
1930
102.9 mm (4.1 in)
1931
58.7 mm (2.3 in)
1932
96.0 mm (3.8 in)
1933
99.6 mm (3.9 in)
1934
75.2 mm (3.0 in)
1935
95.2 mm (3.7 in)
1936
101.5 mm (4.0 in)
1937
132.6 mm (5.2 in)
1938
78.2 mm (3.1 in)
1939
123.8 mm (4.9 in)
1940
66.3 mm (2.6 in)
1941
104.6 mm (4.1 in)
1942
95.5 mm (3.8 in)
1943
123.7 mm (4.9 in)
1944
102.2 mm (4.0 in)
1945
118.8 mm (4.7 in)
1946
67.1 mm (2.6 in)
1947
111.2 mm (4.4 in)
1948
76.3 mm (3.0 in)
1949
101.6 mm (4.0 in)
1950
112.6 mm (4.4 in)
1951
98.1 mm (3.9 in)
1952
75.7 mm (3.0 in)
1953
67.7 mm (2.7 in)
1954
55.4 mm (2.2 in)
1955
110.4 mm (4.3 in)
1956
74.2 mm (2.9 in)
1957
110.3 mm (4.3 in)
1958
159.3 mm (6.3 in)
1959
104.1 mm (4.1 in)
1960
43.2 mm (1.7 in)
1961
127.2 mm (5.0 in)
1962
107.5 mm (4.2 in)
1963
100.1 mm (3.9 in)
1964
102.4 mm (4.0 in)
1965
77.0 mm (3.0 in)
1966
81.6 mm (3.2 in)
1967
80.3 mm (3.2 in)
1968
135.1 mm (5.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Richmond Wtr Wks, 1896 to 1968. The record is 41 days in 1908, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Richmond Wtr Wks by year
Year
Longest dry spell (CDD)
1896
12 days
1897
24 days
1898
15 days
1899
16 days
1900
21 days
1901
19 days
1902
20 days
1903
18 days
1904
29 days
1905
18 days
1906
14 days
1907
22 days
1908
41 days
1909
18 days
1910
34 days
1911
25 days
1912
17 days
1913
22 days
1914
19 days
1915
17 days
1916
19 days
1917
23 days
1918
15 days
1919
19 days
1920
27 days
1921
15 days
1922
16 days
1923
16 days
1924
25 days
1925
17 days
1926
16 days
1927
20 days
1928
15 days
1929
19 days
1930
14 days
1931
18 days
1932
15 days
1933
15 days
1934
19 days
1935
18 days
1936
26 days
1937
14 days
1938
29 days
1939
20 days
1940
14 days
1941
21 days
1942
26 days
1943
20 days
1944
29 days
1945
15 days
1946
14 days
1947
17 days
1948
20 days
1949
21 days
1950
24 days
1951
17 days
1952
18 days
1953
25 days
1954
13 days
1955
29 days
1956
15 days
1957
23 days
1958
27 days
1959
16 days
1960
14 days
1961
14 days
1962
18 days
1963
31 days
1964
18 days
1965
15 days
1966
17 days
1967
20 days
1968
20 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 Richmond Wtr Wks falls on 1 May and the median first autumn frost on 9 October, which leaves a median of 162 days between them.
In 1937 to 1967 the median growing season was 163 days. That is 10 days more than in 1897 to 1926.
Fitted over all years, the growing season changes by +2.1 days per decade at this station.
Frost dates and growing season at Richmond Wtr Wks
Measure
Median, all years
Earliest period (1897 to 1926)
Recent period (1937 to 1967)
Recent against earliest
Fitted trend
Last spring frost
1 May
5 May
29 April
6 days earlier
-1.3 days per decade
First autumn frost
9 October
7 October
9 October
2 days later
+0.8 days per decade
Growing days
162 days
153 days
163 days
10 days more
+2.1 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
70 years, 1897 to 1968
A day with at least 58.0 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 120.4 mm (4.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Richmond Wtr Wks: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
58.0 mm (2.3 in)
5 years
74.8 mm (2.9 in)
10 years
85.9 mm (3.4 in)
25 years
99.8 mm (3.9 in)
50 years
110.1 mm (4.3 in)
100 years
120.4 mm (4.7 in)
Longer than the 70 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, 70 years of values from 1897 to 1968.
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: 134.6 mm (5.3 in) in 1913; 114.6 mm (4.5 in) in 1926; 103.6 mm (4.1 in) in 1910.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Richmond Wtr Wks standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Richmond Wtr Wks 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.