Record envelope, standing records and threshold days for Valparaiso Wtr Wks (USC00128999), Indiana, United States, with 113 years of record.
Key Facts for Valparaiso Wtr Wks
Valparaiso Wtr Wks (USC00128999) is a weather station in Indiana, United States at 41.51 latitude and -87.04 longitude, 244 m (800 ft) above sea level.
The station reports from 1893 to 2005, 113 years of record.
1,464 records set at Valparaiso Wtr Wks still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Valparaiso Wtr Wks set a daily record precipitation of 21.6 mm (0.9 in) on 14 February 2005.
About the Station
Location: Indiana, United States, 41.51 latitude, -87.04 longitude.
Elevation: 244 m (800 ft).
Period of record: 1893 to 2005, 113 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 Valparaiso 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 Valparaiso Wtr Wks, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
19.4 C (66.9 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
21.7 C (71.1 F)
-29.4 C (-20.9 F)
n/a
n/a
Mar
28.3 C (82.9 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-12.8 C (9.0 F)
n/a
n/a
May
35.6 C (96.1 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
39.4 C (102.9 F)
0.0 C (32.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
4.4 C (39.9 F)
n/a
n/a
Aug
38.9 C (102.0 F)
0.6 C (33.1 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Valparaiso Wtr Wks still stand. 1895 holds the most, with 47.
Standing records at Valparaiso Wtr Wks by the year they were set
Year set
Standing records
1893
11
1894
38
1895
47
1896
32
1897
28
1898
15
1899
22
1900
15
1901
16
1902
16
1903
19
1904
9
1905
13
1906
5
1915
21
1916
18
1917
27
1918
26
1919
7
1920
13
1921
12
1922
10
1923
11
1924
15
1925
34
1926
10
1927
18
1928
14
1929
16
1930
30
1931
22
1932
9
1933
19
1934
23
1935
9
1936
22
1937
7
1938
11
1939
18
1940
19
1941
15
1942
15
1943
12
1944
10
1945
15
1946
16
1947
16
1948
7
1949
7
1950
17
1951
12
1952
11
1953
17
1954
7
1955
5
1956
10
1957
5
1958
5
1959
11
1960
14
1961
6
1962
18
1963
22
1964
17
1965
21
1966
13
1967
17
1968
12
1969
3
1970
11
1971
6
1972
13
1973
6
1974
15
1975
11
1976
11
1977
14
1978
8
1979
13
1980
9
1981
11
1982
18
1983
18
1984
15
1985
7
1986
15
1987
8
1988
17
1989
8
1990
12
1991
15
1992
10
1993
5
1994
11
1995
8
1996
5
1997
8
1998
16
1999
11
2000
20
2001
6
2002
10
2003
2
2004
6
2005
2
All-Time Record Progression
8 new records
8 all-time records were set at Valparaiso Wtr Wks between 23 July 1934 and 19 August 1993. Each dot is a new record.
When Valparaiso Wtr Wks set new all-time records
Date
Kind
Detail
1934-07-23
Record high maximum temperature
Record high maximum temperature 40.6 C (105.1 F)
1963-01-28
Record low minimum temperature
Record low minimum temperature -30.6 C (-23.1 F)
1979-01-28
Record snow depth
Record snow depth 61.0 cm (24.0 in)
1979-02-12
Record snow depth
Record snow depth 68.6 cm (27.0 in)
1979-02-18
Record snow depth
Record snow depth 71.1 cm (28.0 in)
1981-12-17
Record daily snowfall
Record daily snowfall 50.8 cm (20.0 in)
1985-01-20
Record low minimum temperature
Record low minimum temperature -31.7 C (-25.1 F)
1993-08-19
Record high minimum temperature
Record high minimum temperature 27.8 C (82.0 F)
Wettest Day of Each Month
Jul: 186.4 mm (7.3 in)
The wettest day on record for each calendar month at Valparaiso Wtr Wks. The most was 186.4 mm (7.3 in) on 2 July 1983.
Record daily precipitation for each month at Valparaiso Wtr Wks
Month
Record daily precipitation (mm)
Date
Jan
51.8 mm (2.0 in)
10 January 1975
Feb
54.1 mm (2.1 in)
16 February 1954
Mar
55.4 mm (2.2 in)
14 March 1944
Apr
70.4 mm (2.8 in)
29 April 1956
May
81.3 mm (3.2 in)
10 May 1948
Jun
134.1 mm (5.3 in)
13 June 1981
Jul
186.4 mm (7.3 in)
2 July 1983
Aug
186.4 mm (7.3 in)
27 August 1923
Sep
94.5 mm (3.7 in)
14 September 1972
Oct
130.3 mm (5.1 in)
10 October 1954
Nov
102.9 mm (4.1 in)
27 November 1990
Dec
65.8 mm (2.6 in)
24 December 1965
Period of Record Coverage
1893 to 2005
Complete yearUnder 90 percent of days
105 years of record at Valparaiso Wtr Wks, 1893 to 2005. 7 years have data for under 90 percent of days and are left out of rankings: 1893, 1901, 1902, 1906, 1984, 2001, 2005.
Cooler than the station meanWarmer than the station mean
One stripe for each of 95 complete years at Valparaiso Wtr Wks, 1895 to 2004. Blue stripes are years cooler than the station's own mean of 9.8 C (49.7 F); red stripes are warmer. The coolest year was 1917, at 7.4 C (45.3 F), and the warmest was 1998, at 11.9 C (53.4 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Valparaiso Wtr Wks as warming stripes, 1895 to 2004
Year
Annual mean temperature
Difference from the station mean
1895
8.8 C
-1.07 C
1896
9.9 C
+0.09 C
1897
9.9 C
+0.07 C
1898
9.5 C
-0.36 C
1899
9.7 C
-0.16 C
1900
10.7 C
+0.89 C
1902
9.6 C
-0.25 C
1903
9.2 C
-0.62 C
1904
9.0 C
-0.86 C
1905
10.0 C
+0.19 C
1916
9.3 C
-0.54 C
1917
7.4 C
-2.44 C
1918
9.4 C
-0.41 C
1919
10.0 C
+0.15 C
1920
9.1 C
-0.72 C
1921
11.7 C
+1.91 C
1922
10.6 C
+0.78 C
1923
9.8 C
-0.03 C
1924
8.5 C
-1.31 C
1925
9.4 C
-0.47 C
1926
8.9 C
-0.93 C
1927
10.2 C
+0.37 C
1928
9.7 C
-0.16 C
1929
8.8 C
-1.07 C
1930
10.3 C
+0.43 C
1931
11.8 C
+1.97 C
1932
9.9 C
+0.12 C
1933
10.7 C
+0.92 C
1934
10.3 C
+0.47 C
1935
9.3 C
-0.52 C
1936
9.2 C
-0.62 C
1937
9.3 C
-0.53 C
1938
10.9 C
+1.10 C
1939
10.6 C
+0.80 C
1940
9.2 C
-0.63 C
1941
10.7 C
+0.92 C
1942
9.9 C
+0.03 C
1943
9.1 C
-0.74 C
1944
10.1 C
+0.25 C
1945
9.2 C
-0.64 C
1946
10.8 C
+0.99 C
1947
9.3 C
-0.51 C
1949
10.3 C
+0.51 C
1950
8.7 C
-1.13 C
1951
8.7 C
-1.12 C
1952
10.2 C
+0.34 C
1953
10.7 C
+0.85 C
1954
10.7 C
+0.83 C
1955
10.3 C
+0.44 C
1956
10.4 C
+0.62 C
1957
9.8 C
-0.06 C
1958
9.1 C
-0.75 C
1959
10.1 C
+0.27 C
1960
9.5 C
-0.35 C
1961
9.8 C
0.00 C
1962
9.3 C
-0.50 C
1963
9.0 C
-0.84 C
1964
10.4 C
+0.57 C
1965
10.0 C
+0.18 C
1966
9.5 C
-0.35 C
1967
9.3 C
-0.53 C
1968
9.9 C
+0.08 C
1969
9.4 C
-0.38 C
1970
9.8 C
-0.07 C
1971
10.1 C
+0.23 C
1972
8.9 C
-0.94 C
1973
10.9 C
+1.08 C
1974
9.8 C
+0.01 C
1975
10.2 C
+0.36 C
1976
9.2 C
-0.59 C
1977
9.8 C
-0.03 C
1978
8.7 C
-1.14 C
1980
9.5 C
-0.29 C
1981
9.7 C
-0.11 C
1982
9.3 C
-0.53 C
1983
10.2 C
+0.41 C
1985
9.5 C
-0.35 C
1986
10.3 C
+0.46 C
1987
11.1 C
+1.25 C
1988
10.1 C
+0.31 C
1989
9.5 C
-0.33 C
1990
11.4 C
+1.62 C
1991
11.2 C
+1.36 C
1992
9.3 C
-0.48 C
1993
9.3 C
-0.54 C
1994
9.6 C
-0.23 C
1995
10.2 C
+0.41 C
1996
9.0 C
-0.84 C
1997
9.2 C
-0.59 C
1998
11.9 C
+2.07 C
1999
11.0 C
+1.14 C
2000
10.1 C
+0.32 C
2002
10.6 C
+0.76 C
2003
9.5 C
-0.37 C
2004
10.1 C
+0.29 C
The fitted trend in annual mean temperature here over 1895 to 2004 is 0.04 C (-0.01 to 0.10) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.08 F (-0.01 to 0.17) per decade. The slope is a straight line fitted to 95 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Valparaiso Wtr Wks
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.04 C (-0.01 to 0.10) per decade
0.08 F (-0.01 to 0.17) per decade
1895 to 2004
95
Not clearly different from zero
Mean daily maximum
0.00 C (-0.06 to 0.05) per decade
0.00 F (-0.10 to 0.10) per decade
1895 to 2004
95
Not clearly different from zero
Mean daily minimum
0.09 C (0.04 to 0.14) per decade
0.2 F (0.1 to 0.3) per decade
1895 to 2004
95
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
1893 to 2005
Yearly extremes at Valparaiso Wtr Wks: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1934
35.0 C (95.0 F)
105
Coldest night (TNn)
-31.7 C (-25.1 F)
1985
-24.4 C (-11.9 F)
105
Wettest day (Rx1day)
186.4 mm (7.3 in)
1923
54.6 mm (2.1 in)
105
Wettest five days (Rx5day)
235.2 mm (9.3 in)
1983
90.7 mm (3.6 in)
105
Longest dry spell (CDD)
57 days
1900
18 days
105
Hottest day (TXx)
The hottest day of the year at Valparaiso Wtr Wks, 1893 to 2005. The record is 40.6 C (105.1 F) in 1934, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Valparaiso Wtr Wks by year
Year
Hottest day (TXx)
1893
35.0 C (95.0 F)
1894
36.7 C (98.1 F)
1895
36.7 C (98.1 F)
1896
35.6 C (96.1 F)
1897
36.7 C (98.1 F)
1898
36.7 C (98.1 F)
1899
37.8 C (100.0 F)
1900
34.4 C (93.9 F)
1901
40.0 C (104.0 F)
1902
33.3 C (91.9 F)
1903
35.0 C (95.0 F)
1904
35.0 C (95.0 F)
1905
34.4 C (93.9 F)
1906
27.8 C (82.0 F)
1915
31.7 C (89.1 F)
1916
38.9 C (102.0 F)
1917
34.4 C (93.9 F)
1918
37.8 C (100.0 F)
1919
36.1 C (97.0 F)
1920
35.6 C (96.1 F)
1921
37.2 C (99.0 F)
1922
36.7 C (98.1 F)
1923
36.1 C (97.0 F)
1924
33.9 C (93.0 F)
1925
36.7 C (98.1 F)
1926
35.0 C (95.0 F)
1927
35.6 C (96.1 F)
1928
34.4 C (93.9 F)
1929
33.9 C (93.0 F)
1930
38.3 C (100.9 F)
1931
37.8 C (100.0 F)
1932
37.2 C (99.0 F)
1933
37.2 C (99.0 F)
1934
40.6 C (105.1 F)
1935
35.0 C (95.0 F)
1936
38.9 C (102.0 F)
1937
35.0 C (95.0 F)
1938
33.3 C (91.9 F)
1939
38.3 C (100.9 F)
1940
37.2 C (99.0 F)
1941
36.1 C (97.0 F)
1942
35.0 C (95.0 F)
1943
35.6 C (96.1 F)
1944
36.1 C (97.0 F)
1945
37.2 C (99.0 F)
1946
36.7 C (98.1 F)
1947
37.2 C (99.0 F)
1948
35.6 C (96.1 F)
1949
36.1 C (97.0 F)
1950
32.2 C (90.0 F)
1951
31.7 C (89.1 F)
1952
35.6 C (96.1 F)
1953
36.1 C (97.0 F)
1954
36.7 C (98.1 F)
1955
36.7 C (98.1 F)
1956
36.7 C (98.1 F)
1957
33.3 C (91.9 F)
1958
32.8 C (91.0 F)
1959
33.9 C (93.0 F)
1960
35.0 C (95.0 F)
1961
32.8 C (91.0 F)
1962
34.4 C (93.9 F)
1963
35.6 C (96.1 F)
1964
36.1 C (97.0 F)
1965
33.9 C (93.0 F)
1966
36.1 C (97.0 F)
1967
33.3 C (91.9 F)
1968
35.0 C (95.0 F)
1969
33.9 C (93.0 F)
1970
35.6 C (96.1 F)
1971
35.0 C (95.0 F)
1972
33.3 C (91.9 F)
1973
33.9 C (93.0 F)
1974
35.6 C (96.1 F)
1975
33.9 C (93.0 F)
1976
35.0 C (95.0 F)
1977
34.4 C (93.9 F)
1978
34.4 C (93.9 F)
1979
32.8 C (91.0 F)
1980
36.1 C (97.0 F)
1981
33.9 C (93.0 F)
1982
32.8 C (91.0 F)
1983
37.2 C (99.0 F)
1984
33.3 C (91.9 F)
1985
33.3 C (91.9 F)
1986
32.8 C (91.0 F)
1987
34.4 C (93.9 F)
1988
37.8 C (100.0 F)
1989
34.4 C (93.9 F)
1990
35.6 C (96.1 F)
1991
36.7 C (98.1 F)
1992
33.9 C (93.0 F)
1993
31.7 C (89.1 F)
1994
32.2 C (90.0 F)
1995
36.7 C (98.1 F)
1996
32.8 C (91.0 F)
1997
33.9 C (93.0 F)
1998
33.9 C (93.0 F)
1999
37.2 C (99.0 F)
2000
32.2 C (90.0 F)
2001
32.8 C (91.0 F)
2002
35.0 C (95.0 F)
2003
33.3 C (91.9 F)
2004
31.7 C (89.1 F)
2005
23.3 C (73.9 F)
Coldest night (TNn)
The coldest night of the year at Valparaiso Wtr Wks, 1893 to 2005. The record is -31.7 C (-25.1 F) in 1985, marked on the chart; the median year is -24.4 C (-11.9 F).
Coldest night (TNn) at Valparaiso Wtr Wks by year
Year
Coldest night (TNn)
1893
-22.2 C (-8.0 F)
1894
-24.4 C (-11.9 F)
1895
-27.8 C (-18.0 F)
1896
-24.4 C (-11.9 F)
1897
-29.4 C (-20.9 F)
1898
-22.2 C (-8.0 F)
1899
-28.9 C (-20.0 F)
1900
-22.2 C (-8.0 F)
1901
-25.6 C (-14.1 F)
1902
-24.4 C (-11.9 F)
1903
-25.0 C (-13.0 F)
1904
-25.6 C (-14.1 F)
1905
-29.4 C (-20.9 F)
1906
-20.0 C (-4.0 F)
1915
-25.6 C (-14.1 F)
1916
-25.0 C (-13.0 F)
1917
-27.2 C (-17.0 F)
1918
-29.4 C (-20.9 F)
1919
-25.6 C (-14.1 F)
1920
-22.8 C (-9.0 F)
1921
-14.4 C (6.1 F)
1922
-24.4 C (-11.9 F)
1923
-22.2 C (-8.0 F)
1924
-30.0 C (-22.0 F)
1925
-23.9 C (-11.0 F)
1926
-24.4 C (-11.9 F)
1927
-25.6 C (-14.1 F)
1928
-24.4 C (-11.9 F)
1929
-27.8 C (-18.0 F)
1930
-28.9 C (-20.0 F)
1931
-23.9 C (-11.0 F)
1932
-23.3 C (-9.9 F)
1933
-28.3 C (-18.9 F)
1934
-26.7 C (-16.1 F)
1935
-23.3 C (-9.9 F)
1936
-28.3 C (-18.9 F)
1937
-18.9 C (-2.0 F)
1938
-22.2 C (-8.0 F)
1939
-18.9 C (-2.0 F)
1940
-26.1 C (-15.0 F)
1941
-20.6 C (-5.1 F)
1942
-25.0 C (-13.0 F)
1943
-28.9 C (-20.0 F)
1944
-25.0 C (-13.0 F)
1945
-23.3 C (-9.9 F)
1946
-20.6 C (-5.1 F)
1947
-18.9 C (-2.0 F)
1948
-26.1 C (-15.0 F)
1949
-22.8 C (-9.0 F)
1950
-23.3 C (-9.9 F)
1951
-25.6 C (-14.1 F)
1952
-18.9 C (-2.0 F)
1953
-23.3 C (-9.9 F)
1954
-18.3 C (-0.9 F)
1955
-25.0 C (-13.0 F)
1956
-17.8 C (0.0 F)
1957
-25.6 C (-14.1 F)
1958
-24.4 C (-11.9 F)
1959
-25.6 C (-14.1 F)
1960
-27.8 C (-18.0 F)
1961
-27.8 C (-18.0 F)
1962
-25.0 C (-13.0 F)
1963
-30.6 C (-23.1 F)
1964
-19.4 C (-2.9 F)
1965
-23.9 C (-11.0 F)
1966
-26.7 C (-16.1 F)
1967
-23.3 C (-9.9 F)
1968
-26.7 C (-16.1 F)
1969
-22.8 C (-9.0 F)
1970
-26.7 C (-16.1 F)
1971
-24.4 C (-11.9 F)
1972
-28.3 C (-18.9 F)
1973
-20.6 C (-5.1 F)
1974
-22.8 C (-9.0 F)
1975
-23.9 C (-11.0 F)
1976
-26.1 C (-15.0 F)
1977
-27.2 C (-17.0 F)
1978
-26.1 C (-15.0 F)
1979
-28.3 C (-18.9 F)
1980
-23.3 C (-9.9 F)
1981
-28.9 C (-20.0 F)
1982
-28.9 C (-20.0 F)
1983
-28.9 C (-20.0 F)
1984
-28.3 C (-18.9 F)
1985
-31.7 C (-25.1 F)
1986
-21.7 C (-7.1 F)
1987
-22.2 C (-8.0 F)
1988
-25.0 C (-13.0 F)
1989
-25.0 C (-13.0 F)
1990
-21.1 C (-6.0 F)
1991
-21.1 C (-6.0 F)
1992
-23.9 C (-11.0 F)
1993
-20.6 C (-5.1 F)
1994
-30.6 C (-23.1 F)
1995
-20.6 C (-5.1 F)
1996
-26.1 C (-15.0 F)
1997
-24.4 C (-11.9 F)
1998
-17.2 C (1.0 F)
1999
-28.3 C (-18.9 F)
2000
-23.9 C (-11.0 F)
2001
-18.3 C (-0.9 F)
2002
-20.6 C (-5.1 F)
2003
-22.8 C (-9.0 F)
2004
-22.8 C (-9.0 F)
2005
-22.2 C (-8.0 F)
Wettest day (Rx1day)
The wettest day of the year at Valparaiso Wtr Wks, 1893 to 2005. The record is 186.4 mm (7.3 in) in 1923, marked on the chart; the median year is 54.6 mm (2.1 in).
Wettest day (Rx1day) at Valparaiso Wtr Wks by year
Year
Wettest day (Rx1day)
1893
33.5 mm (1.3 in)
1894
50.8 mm (2.0 in)
1895
57.2 mm (2.3 in)
1896
68.6 mm (2.7 in)
1897
50.8 mm (2.0 in)
1898
57.2 mm (2.3 in)
1899
38.1 mm (1.5 in)
1900
38.1 mm (1.5 in)
1901
31.5 mm (1.2 in)
1902
53.3 mm (2.1 in)
1903
58.4 mm (2.3 in)
1904
49.5 mm (1.9 in)
1905
61.0 mm (2.4 in)
1906
33.0 mm (1.3 in)
1915
46.5 mm (1.8 in)
1916
50.5 mm (2.0 in)
1917
34.8 mm (1.4 in)
1918
50.0 mm (2.0 in)
1919
45.2 mm (1.8 in)
1920
57.7 mm (2.3 in)
1921
54.1 mm (2.1 in)
1922
46.7 mm (1.8 in)
1923
186.4 mm (7.3 in)
1924
53.3 mm (2.1 in)
1925
55.4 mm (2.2 in)
1926
42.7 mm (1.7 in)
1927
50.3 mm (2.0 in)
1928
32.5 mm (1.3 in)
1929
48.8 mm (1.9 in)
1930
36.3 mm (1.4 in)
1931
56.1 mm (2.2 in)
1932
75.4 mm (3.0 in)
1933
61.7 mm (2.4 in)
1934
95.5 mm (3.8 in)
1935
70.1 mm (2.8 in)
1936
49.8 mm (2.0 in)
1937
40.9 mm (1.6 in)
1938
58.9 mm (2.3 in)
1939
43.7 mm (1.7 in)
1940
67.1 mm (2.6 in)
1941
124.0 mm (4.9 in)
1942
43.7 mm (1.7 in)
1943
68.6 mm (2.7 in)
1944
55.4 mm (2.2 in)
1945
56.6 mm (2.2 in)
1946
86.9 mm (3.4 in)
1947
50.3 mm (2.0 in)
1948
81.3 mm (3.2 in)
1949
69.1 mm (2.7 in)
1950
59.9 mm (2.4 in)
1951
76.2 mm (3.0 in)
1952
27.9 mm (1.1 in)
1953
40.1 mm (1.6 in)
1954
130.3 mm (5.1 in)
1955
93.0 mm (3.7 in)
1956
70.4 mm (2.8 in)
1957
64.5 mm (2.5 in)
1958
56.4 mm (2.2 in)
1959
110.2 mm (4.3 in)
1960
47.5 mm (1.9 in)
1961
52.3 mm (2.1 in)
1962
31.2 mm (1.2 in)
1963
94.0 mm (3.7 in)
1964
53.1 mm (2.1 in)
1965
69.3 mm (2.7 in)
1966
53.8 mm (2.1 in)
1967
42.4 mm (1.7 in)
1968
82.3 mm (3.2 in)
1969
50.8 mm (2.0 in)
1970
69.3 mm (2.7 in)
1971
85.1 mm (3.4 in)
1972
94.5 mm (3.7 in)
1973
51.8 mm (2.0 in)
1974
48.3 mm (1.9 in)
1975
51.8 mm (2.0 in)
1976
59.2 mm (2.3 in)
1977
52.1 mm (2.1 in)
1978
41.4 mm (1.6 in)
1979
33.5 mm (1.3 in)
1980
45.7 mm (1.8 in)
1981
134.1 mm (5.3 in)
1982
59.2 mm (2.3 in)
1983
186.4 mm (7.3 in)
1984
56.4 mm (2.2 in)
1985
71.1 mm (2.8 in)
1986
67.1 mm (2.6 in)
1987
54.1 mm (2.1 in)
1988
68.6 mm (2.7 in)
1989
105.7 mm (4.2 in)
1990
112.3 mm (4.4 in)
1991
74.7 mm (2.9 in)
1992
56.1 mm (2.2 in)
1993
85.6 mm (3.4 in)
1994
54.6 mm (2.1 in)
1995
61.0 mm (2.4 in)
1996
140.5 mm (5.5 in)
1997
44.2 mm (1.7 in)
1998
53.3 mm (2.1 in)
1999
39.9 mm (1.6 in)
2000
53.8 mm (2.1 in)
2001
43.2 mm (1.7 in)
2002
38.1 mm (1.5 in)
2003
47.0 mm (1.9 in)
2004
55.4 mm (2.2 in)
2005
44.7 mm (1.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Valparaiso Wtr Wks, 1893 to 2005. The record is 235.2 mm (9.3 in) in 1983, marked on the chart; the median year is 90.7 mm (3.6 in).
Wettest five days (Rx5day) at Valparaiso Wtr Wks by year
Year
Wettest five days (Rx5day)
1893
54.8 mm (2.2 in)
1894
129.6 mm (5.1 in)
1895
149.9 mm (5.9 in)
1896
97.8 mm (3.9 in)
1897
96.8 mm (3.8 in)
1898
63.5 mm (2.5 in)
1899
52.1 mm (2.1 in)
1900
76.2 mm (3.0 in)
1901
71.3 mm (2.8 in)
1902
83.9 mm (3.3 in)
1903
70.4 mm (2.8 in)
1904
66.2 mm (2.6 in)
1905
101.7 mm (4.0 in)
1906
62.0 mm (2.4 in)
1915
80.5 mm (3.2 in)
1916
63.3 mm (2.5 in)
1917
59.4 mm (2.3 in)
1918
83.0 mm (3.3 in)
1919
83.1 mm (3.3 in)
1920
97.8 mm (3.9 in)
1921
59.9 mm (2.4 in)
1922
102.2 mm (4.0 in)
1923
204.4 mm (8.0 in)
1924
88.8 mm (3.5 in)
1925
115.8 mm (4.6 in)
1926
85.8 mm (3.4 in)
1927
122.9 mm (4.8 in)
1928
61.2 mm (2.4 in)
1929
71.4 mm (2.8 in)
1930
49.4 mm (1.9 in)
1931
78.3 mm (3.1 in)
1932
100.3 mm (3.9 in)
1933
107.9 mm (4.2 in)
1934
141.5 mm (5.6 in)
1935
106.2 mm (4.2 in)
1936
87.7 mm (3.5 in)
1937
84.5 mm (3.3 in)
1938
78.4 mm (3.1 in)
1939
75.4 mm (3.0 in)
1940
101.8 mm (4.0 in)
1941
232.5 mm (9.2 in)
1942
79.0 mm (3.1 in)
1943
113.5 mm (4.5 in)
1944
99.6 mm (3.9 in)
1945
98.0 mm (3.9 in)
1946
127.9 mm (5.0 in)
1947
66.7 mm (2.6 in)
1948
118.4 mm (4.7 in)
1949
97.8 mm (3.9 in)
1950
87.6 mm (3.4 in)
1951
85.9 mm (3.4 in)
1952
77.5 mm (3.1 in)
1953
57.4 mm (2.3 in)
1954
189.0 mm (7.4 in)
1955
109.5 mm (4.3 in)
1956
140.5 mm (5.5 in)
1957
98.0 mm (3.9 in)
1958
81.5 mm (3.2 in)
1959
146.0 mm (5.7 in)
1960
82.6 mm (3.3 in)
1961
104.4 mm (4.1 in)
1962
53.9 mm (2.1 in)
1963
152.4 mm (6.0 in)
1964
103.6 mm (4.1 in)
1965
111.5 mm (4.4 in)
1966
90.7 mm (3.6 in)
1967
78.9 mm (3.1 in)
1968
128.8 mm (5.1 in)
1969
114.1 mm (4.5 in)
1970
120.4 mm (4.7 in)
1971
97.5 mm (3.8 in)
1972
131.1 mm (5.2 in)
1973
89.9 mm (3.5 in)
1974
55.4 mm (2.2 in)
1975
89.6 mm (3.5 in)
1976
98.0 mm (3.9 in)
1977
76.0 mm (3.0 in)
1978
107.9 mm (4.2 in)
1979
61.1 mm (2.4 in)
1980
95.8 mm (3.8 in)
1981
169.9 mm (6.7 in)
1982
76.5 mm (3.0 in)
1983
235.2 mm (9.3 in)
1984
100.6 mm (4.0 in)
1985
118.4 mm (4.7 in)
1986
108.5 mm (4.3 in)
1987
86.7 mm (3.4 in)
1988
76.0 mm (3.0 in)
1989
154.8 mm (6.1 in)
1990
175.5 mm (6.9 in)
1991
93.5 mm (3.7 in)
1992
83.0 mm (3.3 in)
1993
126.0 mm (5.0 in)
1994
78.9 mm (3.1 in)
1995
89.1 mm (3.5 in)
1996
154.2 mm (6.1 in)
1997
64.7 mm (2.5 in)
1998
81.1 mm (3.2 in)
1999
58.0 mm (2.3 in)
2000
96.2 mm (3.8 in)
2001
89.7 mm (3.5 in)
2002
84.6 mm (3.3 in)
2003
90.7 mm (3.6 in)
2004
107.6 mm (4.2 in)
2005
72.6 mm (2.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Valparaiso Wtr Wks, 1893 to 2005. The record is 57 days in 1900, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Valparaiso Wtr Wks by year
Year
Longest dry spell (CDD)
1893
44 days
1894
30 days
1895
23 days
1896
27 days
1897
48 days
1898
31 days
1899
51 days
1900
57 days
1901
21 days
1902
17 days
1903
19 days
1904
26 days
1905
18 days
1906
10 days
1915
15 days
1916
31 days
1917
22 days
1918
20 days
1919
21 days
1920
16 days
1921
11 days
1922
17 days
1923
22 days
1924
18 days
1925
14 days
1926
14 days
1927
19 days
1928
16 days
1929
17 days
1930
20 days
1931
20 days
1932
20 days
1933
16 days
1934
20 days
1935
15 days
1936
25 days
1937
13 days
1938
20 days
1939
35 days
1940
17 days
1941
15 days
1942
15 days
1943
19 days
1944
23 days
1945
15 days
1946
38 days
1947
26 days
1948
19 days
1949
17 days
1950
17 days
1951
14 days
1952
32 days
1953
22 days
1954
17 days
1955
20 days
1956
13 days
1957
16 days
1958
19 days
1959
34 days
1960
21 days
1961
18 days
1962
18 days
1963
22 days
1964
23 days
1965
13 days
1966
14 days
1967
19 days
1968
14 days
1969
41 days
1970
11 days
1971
12 days
1972
19 days
1973
13 days
1974
13 days
1975
14 days
1976
16 days
1977
15 days
1978
16 days
1979
26 days
1980
16 days
1981
16 days
1982
15 days
1983
28 days
1984
14 days
1985
14 days
1986
13 days
1987
29 days
1988
27 days
1989
16 days
1990
12 days
1991
25 days
1992
16 days
1993
21 days
1994
14 days
1995
17 days
1996
19 days
1997
14 days
1998
13 days
1999
25 days
2000
17 days
2001
13 days
2002
17 days
2003
21 days
2004
21 days
2005
11 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
95 years with a frost
Across 95 years with a frost, the median last spring frost at Valparaiso Wtr Wks falls on 28 April and the median first autumn frost on 13 October, which leaves a median of 168 days between them.
In 1972 to 2004 the median growing season was 171 days. That is 3 days more than in 1895 to 1935.
Fitted over all years, the growing season changes by +0.4 days per decade at this station.
Frost dates and growing season at Valparaiso Wtr Wks
Measure
Median, all years
Earliest period (1895 to 1935)
Recent period (1972 to 2004)
Recent against earliest
Fitted trend
Last spring frost
28 April
29 April
27 April
2 days earlier
-0.2 days per decade
First autumn frost
13 October
13 October
15 October
2 days later
+0.2 days per decade
Growing days
168 days
168 days
171 days
3 days more
+0.4 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
99 years, 1894 to 2004
A day with at least 56.0 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 182.2 mm (7.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Valparaiso 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
56.0 mm (2.2 in)
5 years
76.9 mm (3.0 in)
10 years
94.8 mm (3.7 in)
25 years
123.4 mm (4.9 in)
50 years
150.1 mm (5.9 in)
100 years
182.2 mm (7.2 in)
Longer than the 99 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, 99 years of values from 1894 to 2004.
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: 186.4 mm (7.3 in) in 1923; 186.4 mm (7.3 in) in 1983; 140.5 mm (5.5 in) in 1996.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Valparaiso Wtr Wks standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Valparaiso 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.