Stonyford Weather Records (USC00048580)

Record envelope, standing records and threshold days for Stonyford (USC00048580), California, United States, with 94 years of record.

Key Facts for Stonyford

Stonyford (USC00048580) is a weather station in California, United States at 39.38 latitude and -122.55 longitude, 357 m (1,170 ft) above sea level.
The station reports from 1915 to 2008, 94 years of record.
490 records set at Stonyford still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Stonyford set a daily record precipitation of 63.0 mm (2.5 in) on 22 February 2008.

About the Station

Location: California, United States, 39.38 latitude, -122.55 longitude.
Elevation: 357 m (1,170 ft).
Period of record: 1915 to 2008, 94 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Stonyford. 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 Stonyford, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	17.2 C (63.0 F)	-5.6 C (21.9 F)	n/a	n/a
Mar	25.0 C (77.0 F)	-6.7 C (19.9 F)	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	40.0 C (104.0 F)	12.2 C (54.0 F)	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	43.3 C (109.9 F)	4.4 C (39.9 F)	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	24.4 C (75.9 F)	-7.2 C (19.0 F)	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

490 standing records

490 records at Stonyford still stand. 1970 holds the most, with 122.

All-Time Record Progression

3 new records

3 all-time records were set at Stonyford between 14 February 1986 and 9 January 1995. Each dot is a new record.

When Stonyford set new all-time records
Date	Kind	Detail
1986-02-14	Record daily precipitation	Record daily precipitation 89.2 mm (3.5 in)
1988-01-04	Record daily precipitation	Record daily precipitation 99.3 mm (3.9 in)
1995-01-09	Record daily precipitation	Record daily precipitation 243.8 mm (9.6 in)

Wettest Day of Each Month

Jan: 243.8 mm (9.6 in)

The wettest day on record for each calendar month at Stonyford. The most was 243.8 mm (9.6 in) on 9 January 1995.

Record daily precipitation for each month at Stonyford
Month	Record daily precipitation (mm)	Date
Jan	243.8 mm (9.6 in)	9 January 1995
Feb	92.7 mm (3.6 in)	3 February 1998
Mar	86.9 mm (3.4 in)	9 March 1995
Apr	51.3 mm (2.0 in)	11 April 2006
May	48.8 mm (1.9 in)	28 May 1998
Jun	32.8 mm (1.3 in)	9 June 1954
Jul	17.8 mm (0.7 in)	8 July 1974
Aug	50.0 mm (2.0 in)	8 August 1961
Sep	36.8 mm (1.4 in)	30 September 1957
Oct	83.3 mm (3.3 in)	10 October 1957
Nov	72.1 mm (2.8 in)	10 November 1983
Dec	85.9 mm (3.4 in)	12 December 1995

Period of Record Coverage

1970 to 1981

5 years of record at Stonyford, 1970 to 1981. 5 years have data for under 90 percent of days and are left out of rankings: 1970, 1971, 1975, 1976, 1981.

Latest Records

Latest records at Stonyford
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 February 2008	Stonyford, US	daily rain	63.0 mm (2.5 in)	4.6 mm (0.18 in)	77 years	35 of 100 (Notable)
25 January 2008	Stonyford, US	daily rain	51.6 mm (2.0 in)	12.2 mm (0.5 in)	68 years	35 of 100 (Notable)
22 January 2008	Stonyford, US	daily snowfall	10.2 cm (4.0 in)	8.9 cm (3.5 in)	58 years	41 of 100 (Notable)
22 September 2007	Stonyford, US	daily rain	4.3 mm (0.17 in)	3.0 mm (0.12 in)	33 years	20 of 100 (Routine)
20 May 2006	Stonyford, US	daily rain	7.9 mm (0.31 in)	0.5 mm (0.02 in)	57 years	20 of 100 (Routine)
19 May 2006	Stonyford, US	daily rain	19.3 mm (0.8 in)	17.5 mm (0.7 in)	9 years	20 of 100 (Routine)
11 April 2006	Stonyford, US	monthly rain	51.3 mm (2.0 in)	5.8 mm (0.23 in)	61 years	44 of 100 (Notable)
2 April 2006	Stonyford, US	daily rain	25.1 mm (1.0 in)	5.3 mm (0.21 in)	48 years	29 of 100 (Routine)
5 March 2006	Stonyford, US	daily rain (Tie)	37.6 mm (1.5 in)	tie	19 years	3 of 100 (Routine)
2 January 2006	Stonyford, US	daily rain	19.6 mm (0.8 in)	3.9 mm (0.15 in)	66 years	20 of 100 (Routine)
28 November 2005	Stonyford, US	daily rain	38.6 mm (1.5 in)	6.8 mm (0.27 in)	4 years	16 of 100 (Routine)
8 November 2005	Stonyford, US	daily rain	27.2 mm (1.1 in)	5.6 mm (0.22 in)	40 years	25 of 100 (Routine)
4 May 2005	Stonyford, US	daily rain	23.9 mm (0.9 in)	3.6 mm (0.14 in)	54 years	20 of 100 (Routine)
18 March 2005	Stonyford, US	daily rain	23.6 mm (0.9 in)	5.1 mm (0.20 in)	30 years	20 of 100 (Routine)
27 December 2004	Stonyford, US	daily rain	34.5 mm (1.4 in)	1.5 mm (0.06 in)	53 years	25 of 100 (Routine)
26 December 2004	Stonyford, US	daily rain	50.3 mm (2.0 in)	9.9 mm (0.39 in)	56 years	32 of 100 (Routine)
20 October 2004	Stonyford, US	daily rain	18.8 mm (0.7 in)	1.0 mm (0.04 in)	63 years	20 of 100 (Routine)
19 October 2004	Stonyford, US	daily rain	33.0 mm (1.3 in)	30.5 mm (1.2 in)	20 years	40 of 100 (Notable)
21 August 2003	Stonyford, US	daily rain	6.6 mm (0.26 in)	6.6 mm (0.26 in)	64 years	20 of 100 (Routine)
2 August 2003	Stonyford, US	daily rain	5.6 mm (0.22 in)	5.6 mm (0.22 in)	64 years	20 of 100 (Routine)

Extremes by Year

1915 to 2008

Yearly extremes at Stonyford: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1981	25.0 C (77.0 F)	5
Coldest night (TNn)	-7.2 C (19.0 F)	1975	-5.6 C (21.9 F)	5
Wettest day (Rx1day)	243.8 mm (9.6 in)	1995	50.3 mm (2.0 in)	80
Wettest five days (Rx5day)	292.6 mm (11.5 in)	1995	96.8 mm (3.8 in)	71
Longest dry spell (CDD)	164 days	2002	106 days	71

Hottest day (TXx)

The hottest day of the year at Stonyford, 1915 to 2008. The record is 43.3 C (109.9 F) in 1981, marked on the chart; the median year is 25.0 C (77.0 F).

Hottest day (TXx) at Stonyford by year
Year	Hottest day (TXx)
1915	n/a
1916	n/a
1921	n/a
1922	n/a
1925	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	40.0 C (104.0 F)
1971	17.2 C (63.0 F)
1972	n/a
1973	n/a
1974	n/a
1975	24.4 C (75.9 F)
1976	25.0 C (77.0 F)
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	43.3 C (109.9 F)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a

Coldest night (TNn)

The coldest night of the year at Stonyford, 1915 to 2008. The record is -7.2 C (19.0 F) in 1975, marked on the chart; the median year is -5.6 C (21.9 F).

Coldest night (TNn) at Stonyford by year
Year	Coldest night (TNn)
1915	n/a
1916	n/a
1921	n/a
1922	n/a
1925	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	12.2 C (54.0 F)
1971	-5.6 C (21.9 F)
1972	n/a
1973	n/a
1974	n/a
1975	-7.2 C (19.0 F)
1976	-6.7 C (19.9 F)
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	4.4 C (39.9 F)
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a

Wettest day (Rx1day)

The wettest day of the year at Stonyford, 1915 to 2008. The record is 243.8 mm (9.6 in) in 1995, marked on the chart; the median year is 50.3 mm (2.0 in).

Wettest day (Rx1day) at Stonyford by year
Year	Wettest day (Rx1day)
1915	78.7 mm (3.1 in)
1916	52.8 mm (2.1 in)
1921	27.9 mm (1.1 in)
1922	38.1 mm (1.5 in)
1925	58.4 mm (2.3 in)
1927	45.7 mm (1.8 in)
1928	38.1 mm (1.5 in)
1929	25.4 mm (1.0 in)
1930	58.4 mm (2.3 in)
1938	50.8 mm (2.0 in)
1939	23.4 mm (0.9 in)
1940	75.4 mm (3.0 in)
1941	50.8 mm (2.0 in)
1942	71.6 mm (2.8 in)
1943	58.4 mm (2.3 in)
1944	45.5 mm (1.8 in)
1945	52.3 mm (2.1 in)
1946	37.3 mm (1.5 in)
1947	43.7 mm (1.7 in)
1948	40.4 mm (1.6 in)
1949	46.7 mm (1.8 in)
1950	66.3 mm (2.6 in)
1951	37.3 mm (1.5 in)
1952	55.1 mm (2.2 in)
1953	61.7 mm (2.4 in)
1954	85.9 mm (3.4 in)
1955	75.9 mm (3.0 in)
1956	39.9 mm (1.6 in)
1957	83.3 mm (3.3 in)
1958	67.3 mm (2.6 in)
1959	82.6 mm (3.3 in)
1960	52.3 mm (2.1 in)
1961	50.8 mm (2.0 in)
1962	70.6 mm (2.8 in)
1963	45.5 mm (1.8 in)
1964	50.8 mm (2.0 in)
1965	57.4 mm (2.3 in)
1966	47.8 mm (1.9 in)
1967	43.4 mm (1.7 in)
1968	41.9 mm (1.6 in)
1969	47.2 mm (1.9 in)
1970	56.9 mm (2.2 in)
1971	38.1 mm (1.5 in)
1972	55.9 mm (2.2 in)
1973	50.8 mm (2.0 in)
1974	41.4 mm (1.6 in)
1975	55.1 mm (2.2 in)
1976	15.7 mm (0.6 in)
1977	44.5 mm (1.8 in)
1978	30.5 mm (1.2 in)
1979	64.5 mm (2.5 in)
1980	46.0 mm (1.8 in)
1981	41.9 mm (1.6 in)
1982	47.8 mm (1.9 in)
1983	72.1 mm (2.8 in)
1984	23.9 mm (0.9 in)
1985	51.1 mm (2.0 in)
1986	89.2 mm (3.5 in)
1987	37.6 mm (1.5 in)
1988	99.3 mm (3.9 in)
1989	33.0 mm (1.3 in)
1990	22.9 mm (0.9 in)
1991	24.4 mm (1.0 in)
1992	39.1 mm (1.5 in)
1993	50.3 mm (2.0 in)
1994	45.0 mm (1.8 in)
1995	243.8 mm (9.6 in)
1996	38.1 mm (1.5 in)
1997	58.4 mm (2.3 in)
1998	92.7 mm (3.6 in)
1999	41.9 mm (1.6 in)
2000	38.1 mm (1.5 in)
2001	50.3 mm (2.0 in)
2002	68.6 mm (2.7 in)
2003	38.1 mm (1.5 in)
2004	50.3 mm (2.0 in)
2005	43.9 mm (1.7 in)
2006	51.3 mm (2.0 in)
2007	38.1 mm (1.5 in)
2008	63.0 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Stonyford, 1915 to 2008. The record is 292.6 mm (11.5 in) in 1995, marked on the chart; the median year is 96.8 mm (3.8 in).

Wettest five days (Rx5day) at Stonyford by year
Year	Wettest five days (Rx5day)
1915	n/a
1916	n/a
1921	n/a
1922	n/a
1925	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1938	40.4 mm (1.6 in)
1939	35.1 mm (1.4 in)
1940	178.8 mm (7.0 in)
1941	114.8 mm (4.5 in)
1942	112.7 mm (4.4 in)
1943	146.8 mm (5.8 in)
1944	86.6 mm (3.4 in)
1945	135.4 mm (5.3 in)
1946	68.4 mm (2.7 in)
1947	74.0 mm (2.9 in)
1948	103.7 mm (4.1 in)
1949	114.3 mm (4.5 in)
1950	111.0 mm (4.4 in)
1951	84.6 mm (3.3 in)
1952	109.5 mm (4.3 in)
1953	80.8 mm (3.2 in)
1954	123.2 mm (4.9 in)
1955	175.7 mm (6.9 in)
1956	100.3 mm (3.9 in)
1957	132.0 mm (5.2 in)
1958	93.8 mm (3.7 in)
1959	130.9 mm (5.2 in)
1960	87.1 mm (3.4 in)
1961	111.0 mm (4.4 in)
1962	149.1 mm (5.9 in)
1963	101.6 mm (4.0 in)
1964	119.7 mm (4.7 in)
1965	118.0 mm (4.6 in)
1966	78.4 mm (3.1 in)
1967	105.9 mm (4.2 in)
1968	96.8 mm (3.8 in)
1969	101.0 mm (4.0 in)
1970	108.5 mm (4.3 in)
1971	68.3 mm (2.7 in)
1972	113.1 mm (4.5 in)
1973	110.8 mm (4.4 in)
1974	87.4 mm (3.4 in)
1975	61.2 mm (2.4 in)
1976	26.1 mm (1.0 in)
1977	55.7 mm (2.2 in)
1978	25.4 mm (1.0 in)
1979	88.3 mm (3.5 in)
1980	143.0 mm (5.6 in)
1981	80.0 mm (3.1 in)
1982	79.8 mm (3.1 in)
1983	166.9 mm (6.6 in)
1984	44.7 mm (1.8 in)
1985	89.8 mm (3.5 in)
1986	187.5 mm (7.4 in)
1987	52.8 mm (2.1 in)
1988	103.6 mm (4.1 in)
1989	54.4 mm (2.1 in)
1990	45.8 mm (1.8 in)
1991	32.0 mm (1.3 in)
1992	114.6 mm (4.5 in)
1993	81.0 mm (3.2 in)
1994	50.6 mm (2.0 in)
1995	292.6 mm (11.5 in)
1996	76.5 mm (3.0 in)
1997	143.5 mm (5.6 in)
1998	193.3 mm (7.6 in)
1999	54.8 mm (2.2 in)
2000	67.3 mm (2.6 in)
2001	85.7 mm (3.4 in)
2002	115.3 mm (4.5 in)
2003	59.2 mm (2.3 in)
2004	102.3 mm (4.0 in)
2005	80.0 mm (3.1 in)
2006	69.6 mm (2.7 in)
2007	83.9 mm (3.3 in)
2008	132.1 mm (5.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Stonyford, 1915 to 2008. The record is 164 days in 2002, marked on the chart; the median year is 106 days.

Longest dry spell (CDD) at Stonyford by year
Year	Longest dry spell (CDD)
1915	n/a
1916	n/a
1921	n/a
1922	n/a
1925	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1938	28 days
1939	124 days
1940	93 days
1941	141 days
1942	101 days
1943	68 days
1944	120 days
1945	74 days
1946	68 days
1947	114 days
1948	98 days
1949	129 days
1950	94 days
1951	148 days
1952	110 days
1953	84 days
1954	75 days
1955	128 days
1956	133 days
1957	120 days
1958	92 days
1959	115 days
1960	134 days
1961	68 days
1962	104 days
1963	109 days
1964	138 days
1965	112 days
1966	112 days
1967	96 days
1968	128 days
1969	117 days
1970	125 days
1971	123 days
1972	107 days
1973	120 days
1974	83 days
1975	79 days
1976	57 days
1977	150 days
1978	126 days
1979	22 days
1980	92 days
1981	121 days
1982	61 days
1983	108 days
1984	106 days
1985	48 days
1986	136 days
1987	108 days
1988	92 days
1989	77 days
1990	69 days
1991	117 days
1992	94 days
1993	124 days
1994	138 days
1995	97 days
1996	77 days
1997	74 days
1998	106 days
1999	81 days
2000	84 days
2001	88 days
2002	164 days
2003	86 days
2004	74 days
2005	133 days
2006	133 days
2007	62 days
2008	36 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.

Rainfall Return Levels

54 years, 1939 to 2006

A day with at least 50.4 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 100.5 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Stonyford: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	50.4 mm (2.0 in)
5 years	66.3 mm (2.6 in)
10 years	75.7 mm (3.0 in)
25 years	86.5 mm (3.4 in)
50 years	93.8 mm (3.7 in)
100 years	100.5 mm (4.0 in)	Longer than the 54 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, 54 years of values from 1939 to 2006.

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: 92.7 mm (3.6 in) in 1998; 89.2 mm (3.5 in) in 1986; 85.9 mm (3.4 in) in 1954.

Download the Data

Data for Stonyford standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Stonyford 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.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).