Record envelope, standing records and threshold days for Valley Falls (USC00358812), Oregon, United States, with 94 years of record.
Key Facts for Valley Falls
Valley Falls (USC00358812) is a weather station in Oregon, United States at 42.48 latitude and -120.28 longitude, 1,318 m (4,325 ft) above sea level.
The station reports from 1910 to 2003, 94 years of record.
1,464 records set at Valley Falls still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Valley Falls set a daily record high maximum temperature of 25.0 C (77.0 F) on 27 October 2003.
About the Station
Location: Oregon, United States, 42.48 latitude, -120.28 longitude.
Elevation: 1,318 m (4,325 ft).
Period of record: 1910 to 2003, 94 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 Valley Falls. 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 Valley Falls, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.3 C (64.9 F)
-39.4 C (-38.9 F)
n/a
n/a
Feb
20.0 C (68.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-21.7 C (-7.1 F)
n/a
n/a
Apr
29.4 C (84.9 F)
-15.0 C (5.0 F)
n/a
n/a
May
34.4 C (93.9 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
38.9 C (102.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jul
40.6 C (105.1 F)
-3.9 C (25.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
-5.6 C (21.9 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-13.3 C (8.1 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-16.1 C (3.0 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-28.3 C (-18.9 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-36.7 C (-34.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Valley Falls still stand. 1954 holds the most, with 52.
Standing records at Valley Falls by the year they were set
Year set
Standing records
1914
25
1915
18
1916
41
1917
38
1918
37
1919
44
1920
31
1921
20
1922
26
1923
12
1924
42
1925
22
1926
40
1927
28
1928
16
1929
28
1930
21
1931
39
1932
34
1933
27
1934
33
1935
28
1936
26
1937
24
1938
16
1939
17
1940
12
1941
10
1942
15
1943
20
1944
15
1945
13
1946
7
1947
14
1948
5
1949
36
1950
29
1951
20
1952
11
1953
18
1954
52
1955
26
1956
13
1957
16
1958
14
1959
14
1960
22
1961
21
1962
25
1963
29
1964
14
1983
3
1984
5
1985
18
1986
34
1987
17
1988
11
1989
11
1990
13
1991
2
1992
11
1993
15
1994
2
1995
26
1996
4
1997
16
1998
11
1999
17
2000
14
2001
9
2002
7
2003
14
All-Time Record Progression
3 new records
3 all-time records were set at Valley Falls between 6 February 1989 and 21 February 2001. Each dot is a new record.
When Valley Falls set new all-time records
Date
Kind
Detail
1989-02-06
Record low maximum temperature
Record low maximum temperature -17.8 C (0.0 F)
1990-12-21
Record low maximum temperature
Record low maximum temperature -21.1 C (-6.0 F)
2001-02-21
Record daily precipitation
Record daily precipitation 101.6 mm (4.0 in)
Wettest Day of Each Month
Feb: 101.6 mm (4.0 in)
The wettest day on record for each calendar month at Valley Falls. The most was 101.6 mm (4.0 in) on 21 February 2001.
Record daily precipitation for each month at Valley Falls
Month
Record daily precipitation (mm)
Date
Jan
53.3 mm (2.1 in)
20 January 1964
Feb
101.6 mm (4.0 in)
21 February 2001
Mar
50.8 mm (2.0 in)
2 March 2003
Apr
50.8 mm (2.0 in)
1 April 2001
May
50.8 mm (2.0 in)
6 May 1927
Jun
45.7 mm (1.8 in)
9 June 1944
Jul
45.0 mm (1.8 in)
17 July 1987
Aug
38.9 mm (1.5 in)
31 August 1984
Sep
36.6 mm (1.4 in)
8 September 1985
Oct
52.8 mm (2.1 in)
10 October 1962
Nov
87.6 mm (3.4 in)
24 November 1910
Dec
47.0 mm (1.9 in)
30 December 1913
Period of Record Coverage
1914 to 2003
Complete yearUnder 90 percent of days
72 years of record at Valley Falls, 1914 to 2003. 13 years have data for under 90 percent of days and are left out of rankings: 1948, 1952, 1983, 1984, 1985, 1989, 1990, 1992 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 50 complete years at Valley Falls, 1915 to 1998. Blue stripes are years cooler than the station's own mean of 8.4 C (47.1 F); red stripes are warmer. The coolest year was 1954, at 6.9 C (44.4 F), and the warmest was 1995, at 10.8 C (51.5 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Valley Falls as warming stripes, 1915 to 1998
Year
Annual mean temperature
Difference from the station mean
1915
8.9 C
+0.51 C
1916
8.3 C
-0.10 C
1917
8.4 C
-0.01 C
1918
8.6 C
+0.17 C
1919
8.0 C
-0.34 C
1920
7.9 C
-0.49 C
1921
8.6 C
+0.25 C
1922
7.6 C
-0.78 C
1923
7.9 C
-0.45 C
1924
8.4 C
+0.05 C
1925
9.4 C
+0.97 C
1927
8.4 C
+0.01 C
1928
8.9 C
+0.56 C
1929
8.2 C
-0.22 C
1930
8.1 C
-0.25 C
1931
9.1 C
+0.72 C
1932
7.8 C
-0.63 C
1933
8.1 C
-0.24 C
1934
10.3 C
+1.94 C
1935
8.0 C
-0.43 C
1936
8.8 C
+0.38 C
1937
7.9 C
-0.44 C
1938
8.0 C
-0.39 C
1939
8.9 C
+0.56 C
1940
9.2 C
+0.78 C
1941
8.5 C
+0.15 C
1942
8.3 C
-0.13 C
1943
8.1 C
-0.32 C
1944
7.5 C
-0.92 C
1945
8.2 C
-0.17 C
1946
8.0 C
-0.43 C
1947
8.8 C
+0.37 C
1949
6.9 C
-1.46 C
1950
8.4 C
+0.00 C
1953
8.1 C
-0.31 C
1954
6.9 C
-1.47 C
1955
7.0 C
-1.41 C
1957
7.6 C
-0.81 C
1958
9.6 C
+1.25 C
1959
8.6 C
+0.17 C
1960
8.2 C
-0.23 C
1961
8.5 C
+0.09 C
1962
8.4 C
+0.06 C
1963
8.5 C
+0.16 C
1964
7.5 C
-0.85 C
1986
9.7 C
+1.35 C
1987
9.8 C
+1.38 C
1993
7.7 C
-0.64 C
1995
10.8 C
+2.45 C
1998
7.9 C
-0.44 C
The fitted trend in annual mean temperature here over 1915 to 1998 is 0.1 C (0.0 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 50 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Valley Falls
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (0.0 to 0.2) per decade
0.1 F (-0.1 to 0.3) per decade
1915 to 1998
50
Not clearly different from zero
Mean daily maximum
-0.04 C (-0.15 to 0.08) per decade
-0.1 F (-0.3 to 0.1) per decade
1915 to 1998
50
Not clearly different from zero
Mean daily minimum
0.15 C (0.00 to 0.29) per decade
0.26 F (0.00 to 0.53) per decade
1915 to 1998
50
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
1910 to 2003
Yearly extremes at Valley Falls: 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)
1931
37.2 C (99.0 F)
72
Coldest night (TNn)
-39.4 C (-38.9 F)
1937
-22.8 C (-9.0 F)
72
Wettest day (Rx1day)
101.6 mm (4.0 in)
2001
29.4 mm (1.2 in)
76
Wettest five days (Rx5day)
133.3 mm (5.2 in)
1962
39.6 mm (1.6 in)
76
Longest dry spell (CDD)
112 days
1933
44 days
76
Hottest day (TXx)
The hottest day of the year at Valley Falls, 1910 to 2003. The record is 40.6 C (105.1 F) in 1931, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Valley Falls by year
Year
Hottest day (TXx)
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
37.2 C (99.0 F)
1915
38.9 C (102.0 F)
1916
35.0 C (95.0 F)
1917
37.2 C (99.0 F)
1918
35.6 C (96.1 F)
1919
39.4 C (102.9 F)
1920
37.8 C (100.0 F)
1921
34.4 C (93.9 F)
1922
37.2 C (99.0 F)
1923
36.7 C (98.1 F)
1924
38.9 C (102.0 F)
1925
38.3 C (100.9 F)
1926
37.2 C (99.0 F)
1927
35.0 C (95.0 F)
1928
38.9 C (102.0 F)
1929
38.9 C (102.0 F)
1930
37.2 C (99.0 F)
1931
40.6 C (105.1 F)
1932
36.1 C (97.0 F)
1933
38.9 C (102.0 F)
1934
38.3 C (100.9 F)
1935
39.4 C (102.9 F)
1936
38.9 C (102.0 F)
1937
38.3 C (100.9 F)
1938
37.8 C (100.0 F)
1939
38.3 C (100.9 F)
1940
37.2 C (99.0 F)
1941
36.1 C (97.0 F)
1942
37.2 C (99.0 F)
1943
36.1 C (97.0 F)
1944
36.7 C (98.1 F)
1945
37.8 C (100.0 F)
1946
38.9 C (102.0 F)
1947
34.4 C (93.9 F)
1948
27.8 C (82.0 F)
1949
36.1 C (97.0 F)
1950
38.9 C (102.0 F)
1951
36.7 C (98.1 F)
1952
35.0 C (95.0 F)
1953
36.1 C (97.0 F)
1954
37.2 C (99.0 F)
1955
37.8 C (100.0 F)
1956
36.1 C (97.0 F)
1957
33.9 C (93.0 F)
1958
35.6 C (96.1 F)
1959
37.8 C (100.0 F)
1960
39.4 C (102.9 F)
1961
40.6 C (105.1 F)
1962
36.1 C (97.0 F)
1963
33.9 C (93.0 F)
1964
36.7 C (98.1 F)
1983
17.8 C (64.0 F)
1984
36.7 C (98.1 F)
1985
36.7 C (98.1 F)
1986
36.1 C (97.0 F)
1987
38.9 C (102.0 F)
1988
37.8 C (100.0 F)
1989
35.6 C (96.1 F)
1990
37.8 C (100.0 F)
1991
36.7 C (98.1 F)
1992
37.8 C (100.0 F)
1993
31.1 C (88.0 F)
1994
38.3 C (100.9 F)
1995
33.3 C (91.9 F)
1996
37.8 C (100.0 F)
1997
36.7 C (98.1 F)
1998
37.2 C (99.0 F)
1999
37.2 C (99.0 F)
2000
35.6 C (96.1 F)
2001
36.7 C (98.1 F)
2002
33.9 C (93.0 F)
2003
37.8 C (100.0 F)
Coldest night (TNn)
The coldest night of the year at Valley Falls, 1910 to 2003. The record is -39.4 C (-38.9 F) in 1937, marked on the chart; the median year is -22.8 C (-9.0 F).
Coldest night (TNn) at Valley Falls by year
Year
Coldest night (TNn)
1910
n/a
1911
n/a
1912
n/a
1913
n/a
1914
-24.4 C (-11.9 F)
1915
-22.8 C (-9.0 F)
1916
-21.1 C (-6.0 F)
1917
-26.1 C (-15.0 F)
1918
-25.0 C (-13.0 F)
1919
-35.0 C (-31.0 F)
1920
-17.2 C (1.0 F)
1921
-20.6 C (-5.1 F)
1922
-30.6 C (-23.1 F)
1923
-25.0 C (-13.0 F)
1924
-33.3 C (-27.9 F)
1925
-13.3 C (8.1 F)
1926
-21.7 C (-7.1 F)
1927
-24.4 C (-11.9 F)
1928
-17.8 C (0.0 F)
1929
-21.7 C (-7.1 F)
1930
-31.1 C (-24.0 F)
1931
-24.4 C (-11.9 F)
1932
-36.7 C (-34.1 F)
1933
-26.7 C (-16.1 F)
1934
-14.4 C (6.1 F)
1935
-28.3 C (-18.9 F)
1936
-19.4 C (-2.9 F)
1937
-39.4 C (-38.9 F)
1938
-23.3 C (-9.9 F)
1939
-16.7 C (1.9 F)
1940
-23.3 C (-9.9 F)
1941
-17.2 C (1.0 F)
1942
-28.3 C (-18.9 F)
1943
-23.9 C (-11.0 F)
1944
-20.0 C (-4.0 F)
1945
-21.7 C (-7.1 F)
1946
-20.0 C (-4.0 F)
1947
-24.4 C (-11.9 F)
1948
-21.1 C (-6.0 F)
1949
-32.8 C (-27.0 F)
1950
-26.7 C (-16.1 F)
1951
-22.8 C (-9.0 F)
1952
-23.3 C (-9.9 F)
1953
-16.1 C (3.0 F)
1954
-23.3 C (-9.9 F)
1955
-26.1 C (-15.0 F)
1956
-26.1 C (-15.0 F)
1957
-30.0 C (-22.0 F)
1958
-16.1 C (3.0 F)
1959
-18.9 C (-2.0 F)
1960
-22.8 C (-9.0 F)
1961
-26.1 C (-15.0 F)
1962
-36.7 C (-34.1 F)
1963
-24.4 C (-11.9 F)
1964
-20.0 C (-4.0 F)
1983
-25.0 C (-13.0 F)
1984
-17.8 C (0.0 F)
1985
-21.7 C (-7.1 F)
1986
-13.3 C (8.1 F)
1987
-17.8 C (0.0 F)
1988
-17.8 C (0.0 F)
1989
-28.9 C (-20.0 F)
1990
-31.1 C (-24.0 F)
1991
-12.2 C (10.0 F)
1992
-20.0 C (-4.0 F)
1993
-22.2 C (-8.0 F)
1994
-17.8 C (0.0 F)
1995
-16.7 C (1.9 F)
1996
-10.6 C (12.9 F)
1997
-16.7 C (1.9 F)
1998
-26.7 C (-16.1 F)
1999
-16.1 C (3.0 F)
2000
-16.7 C (1.9 F)
2001
-23.3 C (-9.9 F)
2002
-18.9 C (-2.0 F)
2003
-12.2 C (10.0 F)
Wettest day (Rx1day)
The wettest day of the year at Valley Falls, 1910 to 2003. The record is 101.6 mm (4.0 in) in 2001, marked on the chart; the median year is 29.4 mm (1.2 in).
Wettest day (Rx1day) at Valley Falls by year
Year
Wettest day (Rx1day)
1910
87.6 mm (3.4 in)
1911
22.1 mm (0.9 in)
1912
33.0 mm (1.3 in)
1913
47.0 mm (1.9 in)
1914
21.6 mm (0.9 in)
1915
22.4 mm (0.9 in)
1916
27.2 mm (1.1 in)
1917
28.7 mm (1.1 in)
1918
14.7 mm (0.6 in)
1919
15.2 mm (0.6 in)
1920
34.3 mm (1.4 in)
1921
42.2 mm (1.7 in)
1922
25.4 mm (1.0 in)
1923
42.2 mm (1.7 in)
1924
24.1 mm (0.9 in)
1925
38.4 mm (1.5 in)
1926
14.7 mm (0.6 in)
1927
50.8 mm (2.0 in)
1928
25.9 mm (1.0 in)
1929
22.4 mm (0.9 in)
1930
22.1 mm (0.9 in)
1931
17.8 mm (0.7 in)
1932
40.9 mm (1.6 in)
1933
31.2 mm (1.2 in)
1934
30.2 mm (1.2 in)
1935
24.9 mm (1.0 in)
1936
17.8 mm (0.7 in)
1937
46.7 mm (1.8 in)
1938
22.9 mm (0.9 in)
1939
26.2 mm (1.0 in)
1940
32.5 mm (1.3 in)
1941
30.5 mm (1.2 in)
1942
18.3 mm (0.7 in)
1943
33.0 mm (1.3 in)
1944
45.7 mm (1.8 in)
1945
18.3 mm (0.7 in)
1946
32.3 mm (1.3 in)
1947
20.3 mm (0.8 in)
1948
23.9 mm (0.9 in)
1949
17.5 mm (0.7 in)
1950
21.6 mm (0.9 in)
1951
19.3 mm (0.8 in)
1952
25.1 mm (1.0 in)
1953
14.7 mm (0.6 in)
1954
17.3 mm (0.7 in)
1955
31.8 mm (1.3 in)
1956
37.8 mm (1.5 in)
1957
34.8 mm (1.4 in)
1958
32.3 mm (1.3 in)
1959
21.8 mm (0.9 in)
1960
43.2 mm (1.7 in)
1961
27.2 mm (1.1 in)
1962
52.8 mm (2.1 in)
1963
30.0 mm (1.2 in)
1964
53.3 mm (2.1 in)
1983
17.5 mm (0.7 in)
1984
38.9 mm (1.5 in)
1985
36.6 mm (1.4 in)
1986
34.3 mm (1.4 in)
1987
45.0 mm (1.8 in)
1988
43.9 mm (1.7 in)
1989
40.6 mm (1.6 in)
1990
35.6 mm (1.4 in)
1991
6.4 mm (0.25 in)
1992
34.3 mm (1.4 in)
1993
23.4 mm (0.9 in)
1994
15.2 mm (0.6 in)
1995
17.8 mm (0.7 in)
1996
22.4 mm (0.9 in)
1997
30.5 mm (1.2 in)
1998
39.1 mm (1.5 in)
1999
21.6 mm (0.9 in)
2000
50.8 mm (2.0 in)
2001
101.6 mm (4.0 in)
2002
24.6 mm (1.0 in)
2003
50.8 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Valley Falls, 1910 to 2003. The record is 133.3 mm (5.2 in) in 1962, marked on the chart; the median year is 39.6 mm (1.6 in).
Wettest five days (Rx5day) at Valley Falls by year
Year
Wettest five days (Rx5day)
1910
124.6 mm (4.9 in)
1911
41.4 mm (1.6 in)
1912
40.9 mm (1.6 in)
1913
50.8 mm (2.0 in)
1914
75.0 mm (3.0 in)
1915
35.3 mm (1.4 in)
1916
54.1 mm (2.1 in)
1917
64.0 mm (2.5 in)
1918
12.5 mm (0.5 in)
1919
32.9 mm (1.3 in)
1920
35.6 mm (1.4 in)
1921
57.8 mm (2.3 in)
1922
26.7 mm (1.1 in)
1923
38.6 mm (1.5 in)
1924
27.6 mm (1.1 in)
1925
32.8 mm (1.3 in)
1926
34.0 mm (1.3 in)
1927
51.8 mm (2.0 in)
1928
45.4 mm (1.8 in)
1929
28.2 mm (1.1 in)
1930
36.5 mm (1.4 in)
1931
28.8 mm (1.1 in)
1932
57.1 mm (2.2 in)
1933
44.2 mm (1.7 in)
1934
32.7 mm (1.3 in)
1935
29.0 mm (1.1 in)
1936
38.7 mm (1.5 in)
1937
82.7 mm (3.3 in)
1938
24.7 mm (1.0 in)
1939
42.7 mm (1.7 in)
1940
55.2 mm (2.2 in)
1941
52.9 mm (2.1 in)
1942
38.4 mm (1.5 in)
1943
70.0 mm (2.8 in)
1944
62.0 mm (2.4 in)
1945
34.3 mm (1.4 in)
1946
34.3 mm (1.4 in)
1947
25.9 mm (1.0 in)
1948
30.5 mm (1.2 in)
1949
28.1 mm (1.1 in)
1950
45.0 mm (1.8 in)
1951
25.1 mm (1.0 in)
1952
44.6 mm (1.8 in)
1953
31.2 mm (1.2 in)
1954
33.6 mm (1.3 in)
1955
113.0 mm (4.4 in)
1956
55.0 mm (2.2 in)
1957
51.1 mm (2.0 in)
1958
32.3 mm (1.3 in)
1959
27.6 mm (1.1 in)
1960
53.1 mm (2.1 in)
1961
35.7 mm (1.4 in)
1962
133.3 mm (5.2 in)
1963
61.0 mm (2.4 in)
1964
112.0 mm (4.4 in)
1983
27.1 mm (1.1 in)
1984
40.4 mm (1.6 in)
1985
49.5 mm (1.9 in)
1986
74.8 mm (2.9 in)
1987
52.9 mm (2.1 in)
1988
44.0 mm (1.7 in)
1989
26.7 mm (1.1 in)
1990
35.6 mm (1.4 in)
1991
6.4 mm (0.25 in)
1992
0.0 mm (0.00 in)
1993
23.4 mm (0.9 in)
1994
29.2 mm (1.1 in)
1995
30.5 mm (1.2 in)
1996
53.4 mm (2.1 in)
1997
87.0 mm (3.4 in)
1998
68.6 mm (2.7 in)
1999
22.6 mm (0.9 in)
2000
50.8 mm (2.0 in)
2001
105.2 mm (4.1 in)
2002
41.1 mm (1.6 in)
2003
34.1 mm (1.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Valley Falls, 1910 to 2003. The record is 112 days in 1933, marked on the chart; the median year is 44 days.
Longest dry spell (CDD) at Valley Falls by year
Year
Longest dry spell (CDD)
1910
55 days
1911
39 days
1912
19 days
1913
34 days
1914
50 days
1915
27 days
1916
27 days
1917
71 days
1918
30 days
1919
30 days
1920
19 days
1921
80 days
1922
20 days
1923
44 days
1924
55 days
1925
43 days
1926
51 days
1927
33 days
1928
26 days
1929
69 days
1930
29 days
1931
80 days
1932
59 days
1933
112 days
1934
85 days
1935
87 days
1936
89 days
1937
30 days
1938
28 days
1939
68 days
1940
55 days
1941
30 days
1942
50 days
1943
70 days
1944
33 days
1945
36 days
1946
30 days
1947
81 days
1948
24 days
1949
37 days
1950
42 days
1951
73 days
1952
61 days
1953
69 days
1954
49 days
1955
66 days
1956
44 days
1957
57 days
1958
24 days
1959
51 days
1960
44 days
1961
54 days
1962
62 days
1963
26 days
1964
58 days
1983
10 days
1984
43 days
1985
58 days
1986
61 days
1987
66 days
1988
42 days
1989
40 days
1990
34 days
1991
31 days
1992
31 days
1993
61 days
1994
39 days
1995
58 days
1996
26 days
1997
35 days
1998
42 days
1999
53 days
2000
54 days
2001
43 days
2002
48 days
2003
75 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
50 years with a frost
Across 50 years with a frost, the median last spring frost at Valley Falls falls on 22 June and the median first autumn frost on 16 August, which leaves a median of 54 days between them.
Fitted over all years, the growing season changes by +3.1 days per decade at this station.
Frost dates and growing season at Valley Falls
Measure
Median, all years
Earliest period
Recent period (1936 to 1998)
Recent against earliest
Fitted trend
Last spring frost
22 June
n/a
23 June
n/a
-1.5 days per decade
First autumn frost
16 August
n/a
13 August
n/a
+1.6 days per decade
Growing days
54 days
n/a
54 days
n/a
+3.1 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
41 years, 1911 to 2001
A day with at least 28.8 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 89.6 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Valley Falls: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
28.8 mm (1.1 in)
5 years
41.5 mm (1.6 in)
10 years
51.1 mm (2.0 in)
25 years
65.0 mm (2.6 in)
50 years
76.7 mm (3.0 in)
Longer than the 41 years of record
100 years
89.6 mm (3.5 in)
Longer than the 41 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, 41 years of values from 1911 to 2001.
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: 101.6 mm (4.0 in) in 2001; 53.3 mm (2.1 in) in 1964; 52.8 mm (2.1 in) in 1962.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Valley Falls, at 1935 and 1958. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1935 ran 0.6 C (1.1 F) lower than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1958 ran 0.5 C (0.9 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Valley Falls, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1935
-0.6
-1.1
possible
5
1958
+0.5
+0.9
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 Valley Falls standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Valley Falls 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.