Record envelope, standing records and threshold days for Giant Forest (USC00043397), California, United States, with 48 years of record.
Key Facts for Giant Forest
Giant Forest (USC00043397) is a weather station in California, United States at 36.57 latitude and -118.77 longitude, 1,955 m (6,414 ft) above sea level.
The station reports from 1921 to 1968, 48 years of record.
1,464 records set at Giant Forest still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Giant Forest set a daily record high minimum temperature of 7.8 C (46.0 F) on 28 October 1968.
About the Station
Location: California, United States, 36.57 latitude, -118.77 longitude.
Elevation: 1,955 m (6,414 ft).
Period of record: 1921 to 1968, 48 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 Giant Forest. 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 Giant Forest, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-18.9 C (-2.0 F)
n/a
n/a
Mar
24.4 C (75.9 F)
-16.7 C (1.9 F)
n/a
n/a
Apr
25.0 C (77.0 F)
-14.4 C (6.1 F)
n/a
n/a
May
28.9 C (84.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
32.8 C (91.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jul
34.4 C (93.9 F)
1.7 C (35.1 F)
n/a
n/a
Aug
34.4 C (93.9 F)
0.0 C (32.0 F)
n/a
n/a
Sep
32.8 C (91.0 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
30.0 C (86.0 F)
-15.6 C (3.9 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-17.2 C (1.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Giant Forest still stand. 1934 holds the most, with 89.
Standing records at Giant Forest by the year they were set
Year set
Standing records
1921
7
1922
20
1923
40
1924
37
1925
36
1926
66
1927
26
1928
39
1929
43
1930
68
1931
41
1932
42
1933
47
1934
89
1935
32
1936
41
1937
39
1938
23
1939
51
1940
27
1941
22
1942
20
1943
23
1944
17
1945
13
1946
18
1947
26
1948
31
1949
37
1950
24
1951
22
1952
22
1953
23
1954
19
1955
21
1956
14
1957
20
1958
15
1959
18
1960
18
1961
40
1962
25
1963
33
1964
29
1965
24
1966
18
1967
42
1968
16
All-Time Record Progression
2 new records
2 all-time records were set at Giant Forest between 1 February 1963 and 6 December 1966. Each dot is a new record.
When Giant Forest set new all-time records
Date
Kind
Detail
1963-02-01
Record daily precipitation
Record daily precipitation 246.6 mm (9.7 in)
1966-12-06
Record daily precipitation
Record daily precipitation 327.7 mm (12.9 in)
Wettest Day of Each Month
Dec: 327.7 mm (12.9 in)
The wettest day on record for each calendar month at Giant Forest. The most was 327.7 mm (12.9 in) on 6 December 1966.
Record daily precipitation for each month at Giant Forest
Month
Record daily precipitation (mm)
Date
Jan
166.9 mm (6.6 in)
31 January 1963
Feb
246.6 mm (9.7 in)
1 February 1963
Mar
112.5 mm (4.4 in)
9 March 1943
Apr
131.3 mm (5.2 in)
6 April 1923
May
160.5 mm (6.3 in)
19 May 1957
Jun
77.2 mm (3.0 in)
16 June 1929
Jul
10.4 mm (0.4 in)
16 July 1925
Aug
23.9 mm (0.9 in)
17 August 1958
Sep
50.8 mm (2.0 in)
23 September 1923
Oct
86.4 mm (3.4 in)
27 October 1950
Nov
242.6 mm (9.6 in)
19 November 1950
Dec
327.7 mm (12.9 in)
6 December 1966
Period of Record Coverage
1921 to 1968
Complete yearUnder 90 percent of days
48 years of record at Giant Forest, 1921 to 1968. 3 years have data for under 90 percent of days and are left out of rankings: 1921, 1922, 1968.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Giant Forest, 1923 to 1967. Blue stripes are years cooler than the station's own mean of 8.1 C (46.6 F); red stripes are warmer. The coolest year was 1923, at 6.4 C (43.6 F), and the warmest was 1934, at 10.6 C (51.2 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Giant Forest as warming stripes, 1923 to 1967
Year
Annual mean temperature
Difference from the station mean
1923
6.4 C
-1.66 C
1924
8.1 C
-0.03 C
1925
7.6 C
-0.52 C
1927
7.7 C
-0.36 C
1928
9.3 C
+1.22 C
1929
9.4 C
+1.32 C
1930
9.4 C
+1.30 C
1931
9.4 C
+1.28 C
1932
8.8 C
+0.67 C
1933
8.8 C
+0.68 C
1934
10.6 C
+2.54 C
1935
8.6 C
+0.51 C
1936
9.5 C
+1.43 C
1937
9.0 C
+0.86 C
1938
8.6 C
+0.48 C
1939
9.3 C
+1.17 C
1940
9.4 C
+1.25 C
1941
8.1 C
-0.02 C
1942
8.9 C
+0.77 C
1943
9.0 C
+0.86 C
1945
7.4 C
-0.70 C
1946
7.6 C
-0.52 C
1947
7.8 C
-0.27 C
1948
6.8 C
-1.27 C
1949
6.9 C
-1.16 C
1950
8.3 C
+0.21 C
1951
7.5 C
-0.60 C
1952
6.8 C
-1.27 C
1953
7.2 C
-0.90 C
1954
8.1 C
-0.01 C
1955
6.9 C
-1.20 C
1956
7.5 C
-0.58 C
1957
6.8 C
-1.26 C
1958
7.8 C
-0.31 C
1959
8.0 C
-0.11 C
1960
7.3 C
-0.79 C
1961
7.8 C
-0.35 C
1962
7.5 C
-0.58 C
1963
7.5 C
-0.63 C
1964
7.2 C
-0.95 C
1965
7.1 C
-1.05 C
1966
8.7 C
+0.64 C
1967
8.1 C
-0.05 C
The annual mean temperature here has fallen by 0.3 C (0.1 to 0.5) per decade over 1923 to 1967. In Fahrenheit: 0.6 F (0.3 to 1.0) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Giant Forest
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.3 C (-0.5 to -0.1) per decade
-0.6 F (-1.0 to -0.3) per decade
1923 to 1967
43
Fall
Mean daily maximum
-0.7 C (-1.0 to -0.4) per decade
-1.2 F (-1.7 to -0.6) per decade
1923 to 1967
43
Fall
Mean daily minimum
-0.03 C (-0.17 to 0.11) per decade
-0.1 F (-0.3 to 0.2) per decade
1923 to 1967
43
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
1921 to 1968
Yearly extremes at Giant Forest: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.4 C (93.9 F)
1928
31.1 C (88.0 F)
48
Coldest night (TNn)
-20.6 C (-5.1 F)
1937
-14.7 C (5.5 F)
48
Wettest day (Rx1day)
327.7 mm (12.9 in)
1966
108.2 mm (4.3 in)
48
Wettest five days (Rx5day)
701.1 mm (27.6 in)
1966
216.2 mm (8.5 in)
48
Longest dry spell (CDD)
169 days
1927
71 days
48
Hottest day (TXx)
The hottest day of the year at Giant Forest, 1921 to 1968. The record is 34.4 C (93.9 F) in 1928, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Giant Forest by year
Year
Hottest day (TXx)
1921
27.8 C (82.0 F)
1922
29.4 C (84.9 F)
1923
29.4 C (84.9 F)
1924
31.1 C (88.0 F)
1925
31.7 C (89.1 F)
1926
32.2 C (90.0 F)
1927
29.4 C (84.9 F)
1928
34.4 C (93.9 F)
1929
32.8 C (91.0 F)
1930
32.2 C (90.0 F)
1931
32.2 C (90.0 F)
1932
32.2 C (90.0 F)
1933
34.4 C (93.9 F)
1934
33.3 C (91.9 F)
1935
31.1 C (88.0 F)
1936
32.8 C (91.0 F)
1937
33.9 C (93.0 F)
1938
32.2 C (90.0 F)
1939
32.2 C (90.0 F)
1940
31.1 C (88.0 F)
1941
32.2 C (90.0 F)
1942
32.2 C (90.0 F)
1943
31.7 C (89.1 F)
1944
29.4 C (84.9 F)
1945
31.7 C (89.1 F)
1946
31.1 C (88.0 F)
1947
30.0 C (86.0 F)
1948
28.9 C (84.0 F)
1949
28.9 C (84.0 F)
1950
31.7 C (89.1 F)
1951
29.4 C (84.9 F)
1952
27.8 C (82.0 F)
1953
28.9 C (84.0 F)
1954
30.0 C (86.0 F)
1955
32.2 C (90.0 F)
1956
28.3 C (82.9 F)
1957
29.4 C (84.9 F)
1958
31.1 C (88.0 F)
1959
30.6 C (87.1 F)
1960
30.0 C (86.0 F)
1961
32.8 C (91.0 F)
1962
30.6 C (87.1 F)
1963
29.4 C (84.9 F)
1964
30.6 C (87.1 F)
1965
30.6 C (87.1 F)
1966
32.2 C (90.0 F)
1967
30.6 C (87.1 F)
1968
30.0 C (86.0 F)
Coldest night (TNn)
The coldest night of the year at Giant Forest, 1921 to 1968. The record is -20.6 C (-5.1 F) in 1937, marked on the chart; the median year is -14.7 C (5.5 F).
Coldest night (TNn) at Giant Forest by year
Year
Coldest night (TNn)
1921
-9.4 C (15.1 F)
1922
-15.6 C (3.9 F)
1923
-15.6 C (3.9 F)
1924
-16.7 C (1.9 F)
1925
-11.1 C (12.0 F)
1926
-13.9 C (7.0 F)
1927
-10.6 C (12.9 F)
1928
-14.4 C (6.1 F)
1929
-16.1 C (3.0 F)
1930
-16.1 C (3.0 F)
1931
-15.6 C (3.9 F)
1932
-18.9 C (-2.0 F)
1933
-15.0 C (5.0 F)
1934
-11.1 C (12.0 F)
1935
-17.8 C (0.0 F)
1936
-13.9 C (7.0 F)
1937
-20.6 C (-5.1 F)
1938
-13.3 C (8.1 F)
1939
-17.8 C (0.0 F)
1940
-12.2 C (10.0 F)
1941
-12.8 C (9.0 F)
1942
-14.4 C (6.1 F)
1943
-14.4 C (6.1 F)
1944
-13.3 C (8.1 F)
1945
-12.8 C (9.0 F)
1946
-12.8 C (9.0 F)
1947
-14.4 C (6.1 F)
1948
-16.7 C (1.9 F)
1949
-20.0 C (-4.0 F)
1950
-17.8 C (0.0 F)
1951
-16.7 C (1.9 F)
1952
-15.6 C (3.9 F)
1953
-13.9 C (7.0 F)
1954
-12.2 C (10.0 F)
1955
-15.0 C (5.0 F)
1956
-12.8 C (9.0 F)
1957
-17.8 C (0.0 F)
1958
-15.6 C (3.9 F)
1959
-13.3 C (8.1 F)
1960
-16.7 C (1.9 F)
1961
-10.6 C (12.9 F)
1962
-17.8 C (0.0 F)
1963
-11.1 C (12.0 F)
1964
-13.3 C (8.1 F)
1965
-15.0 C (5.0 F)
1966
-15.0 C (5.0 F)
1967
-17.2 C (1.0 F)
1968
-13.3 C (8.1 F)
Wettest day (Rx1day)
The wettest day of the year at Giant Forest, 1921 to 1968. The record is 327.7 mm (12.9 in) in 1966, marked on the chart; the median year is 108.2 mm (4.3 in).
Wettest day (Rx1day) at Giant Forest by year
Year
Wettest day (Rx1day)
1921
97.5 mm (3.8 in)
1922
69.6 mm (2.7 in)
1923
131.3 mm (5.2 in)
1924
151.6 mm (6.0 in)
1925
69.9 mm (2.8 in)
1926
149.9 mm (5.9 in)
1927
107.2 mm (4.2 in)
1928
52.8 mm (2.1 in)
1929
77.2 mm (3.0 in)
1930
105.2 mm (4.1 in)
1931
195.8 mm (7.7 in)
1932
123.4 mm (4.9 in)
1933
136.4 mm (5.4 in)
1934
76.5 mm (3.0 in)
1935
100.1 mm (3.9 in)
1936
149.6 mm (5.9 in)
1937
209.8 mm (8.3 in)
1938
98.8 mm (3.9 in)
1939
74.2 mm (2.9 in)
1940
99.1 mm (3.9 in)
1941
69.6 mm (2.7 in)
1942
85.1 mm (3.4 in)
1943
143.5 mm (5.6 in)
1944
109.2 mm (4.3 in)
1945
163.3 mm (6.4 in)
1946
139.7 mm (5.5 in)
1947
34.0 mm (1.3 in)
1948
115.6 mm (4.6 in)
1949
120.7 mm (4.8 in)
1950
242.6 mm (9.6 in)
1951
157.5 mm (6.2 in)
1952
147.3 mm (5.8 in)
1953
76.2 mm (3.0 in)
1954
161.0 mm (6.3 in)
1955
87.6 mm (3.4 in)
1956
92.7 mm (3.6 in)
1957
160.5 mm (6.3 in)
1958
124.2 mm (4.9 in)
1959
62.7 mm (2.5 in)
1960
112.3 mm (4.4 in)
1961
48.3 mm (1.9 in)
1962
77.7 mm (3.1 in)
1963
246.6 mm (9.7 in)
1964
143.0 mm (5.6 in)
1965
76.5 mm (3.0 in)
1966
327.7 mm (12.9 in)
1967
85.6 mm (3.4 in)
1968
57.9 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Giant Forest, 1921 to 1968. The record is 701.1 mm (27.6 in) in 1966, marked on the chart; the median year is 216.2 mm (8.5 in).
Wettest five days (Rx5day) at Giant Forest by year
Year
Wettest five days (Rx5day)
1921
291.3 mm (11.5 in)
1922
175.5 mm (6.9 in)
1923
236.8 mm (9.3 in)
1924
174.7 mm (6.9 in)
1925
109.5 mm (4.3 in)
1926
421.8 mm (16.6 in)
1927
342.7 mm (13.5 in)
1928
158.9 mm (6.3 in)
1929
95.7 mm (3.8 in)
1930
172.2 mm (6.8 in)
1931
347.8 mm (13.7 in)
1932
219.2 mm (8.6 in)
1933
239.0 mm (9.4 in)
1934
123.2 mm (4.9 in)
1935
168.4 mm (6.6 in)
1936
291.8 mm (11.5 in)
1937
413.5 mm (16.3 in)
1938
224.1 mm (8.8 in)
1939
150.9 mm (5.9 in)
1940
278.9 mm (11.0 in)
1941
208.6 mm (8.2 in)
1942
198.2 mm (7.8 in)
1943
443.0 mm (17.4 in)
1944
217.4 mm (8.6 in)
1945
390.1 mm (15.4 in)
1946
309.9 mm (12.2 in)
1947
49.3 mm (1.9 in)
1948
175.2 mm (6.9 in)
1949
141.5 mm (5.6 in)
1950
388.4 mm (15.3 in)
1951
310.4 mm (12.2 in)
1952
310.4 mm (12.2 in)
1953
134.6 mm (5.3 in)
1954
209.0 mm (8.2 in)
1955
131.4 mm (5.2 in)
1956
271.8 mm (10.7 in)
1957
213.4 mm (8.4 in)
1958
340.1 mm (13.4 in)
1959
140.2 mm (5.5 in)
1960
123.5 mm (4.9 in)
1961
72.6 mm (2.9 in)
1962
258.6 mm (10.2 in)
1963
544.6 mm (21.4 in)
1964
245.4 mm (9.7 in)
1965
173.8 mm (6.8 in)
1966
701.1 mm (27.6 in)
1967
214.9 mm (8.5 in)
1968
64.5 mm (2.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Giant Forest, 1921 to 1968. The record is 169 days in 1927, marked on the chart; the median year is 71 days.
Longest dry spell (CDD) at Giant Forest by year
Year
Longest dry spell (CDD)
1921
16 days
1922
18 days
1923
26 days
1924
145 days
1925
18 days
1926
62 days
1927
169 days
1928
143 days
1929
94 days
1930
112 days
1931
56 days
1932
74 days
1933
125 days
1934
101 days
1935
47 days
1936
53 days
1937
81 days
1938
52 days
1939
66 days
1940
101 days
1941
63 days
1942
74 days
1943
166 days
1944
97 days
1945
54 days
1946
67 days
1947
70 days
1948
124 days
1949
71 days
1950
44 days
1951
125 days
1952
45 days
1953
66 days
1954
108 days
1955
64 days
1956
137 days
1957
98 days
1958
47 days
1959
75 days
1960
86 days
1961
33 days
1962
75 days
1963
55 days
1964
83 days
1965
42 days
1966
63 days
1967
77 days
1968
51 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
43 years with a frost
Across 43 years with a frost, the median last spring frost at Giant Forest falls on 1 June and the median first autumn frost on 4 October, which leaves a median of 129 days between them.
Fitted over all years, the growing season changes by +0.9 days per decade at this station.
Frost dates and growing season at Giant Forest
Measure
Median, all years
Earliest period
Recent period (1937 to 1967)
Recent against earliest
Fitted trend
Last spring frost
1 June
n/a
31 May
n/a
-1.0 days per decade
First autumn frost
4 October
n/a
4 October
n/a
-0.1 days per decade
Growing days
129 days
n/a
129 days
n/a
+0.9 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
43 years, 1924 to 1967
A day with at least 112.2 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 320.2 mm (12.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Giant Forest: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
112.2 mm (4.4 in)
5 years
162.4 mm (6.4 in)
10 years
197.7 mm (7.8 in)
25 years
244.8 mm (9.6 in)
50 years
281.8 mm (11.1 in)
Longer than the 43 years of record
100 years
320.2 mm (12.6 in)
Longer than the 43 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, 43 years of values from 1924 to 1967.
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: 327.7 mm (12.9 in) in 1966; 246.6 mm (9.7 in) in 1963; 242.6 mm (9.6 in) in 1950.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Giant Forest standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Giant Forest 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.