Fontana 5 N Weather Records (USC00043118)

Record envelope, standing records and threshold days for Fontana 5 N (USC00043118), California, United States, with 32 years of record.

Key Facts for Fontana 5 N

Fontana 5 N (USC00043118) is a weather station in California, United States at 34.18 latitude and -117.45 longitude, 601 m (1,972 ft) above sea level.
The station reports from 1953 to 1984, 32 years of record.
616 records set at Fontana 5 N still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Fontana 5 N set a daily record precipitation of 2.0 mm (0.08 in) on 16 September 1984.

About the Station

Location: California, United States, 34.18 latitude, -117.45 longitude.
Elevation: 601 m (1,972 ft).
Period of record: 1953 to 1984, 32 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 Fontana 5 N. 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 Fontana 5 N, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.7 C (80.1 F)	6.7 C (44.1 F)	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	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	39.4 C (102.9 F)	17.2 C (63.0 F)	n/a	n/a
Aug	36.1 C (97.0 F)	18.9 C (66.0 F)	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	28.9 C (84.0 F)	6.1 C (43.0 F)	n/a	n/a
Dec	26.7 C (80.1 F)	0.0 C (32.0 F)	n/a	n/a

Which Years Hold Standing Records

616 standing records

616 records at Fontana 5 N still stand. 1978 holds the most, with 248.

Wettest Day of Each Month

Jan: 273.3 mm (10.8 in)

The wettest day on record for each calendar month at Fontana 5 N. The most was 273.3 mm (10.8 in) on 25 January 1969.

Record daily precipitation for each month at Fontana 5 N
Month	Record daily precipitation (mm)	Date
Jan	273.3 mm (10.8 in)	25 January 1969
Feb	116.8 mm (4.6 in)	9 February 1978
Mar	111.0 mm (4.4 in)	4 March 1978
Apr	70.6 mm (2.8 in)	1 April 1958
May	44.5 mm (1.8 in)	8 May 1977
Jun	20.3 mm (0.8 in)	10 June 1957
Jul	54.1 mm (2.1 in)	28 July 1968
Aug	52.1 mm (2.1 in)	17 August 1983
Sep	57.9 mm (2.3 in)	11 September 1976
Oct	73.9 mm (2.9 in)	20 October 1979
Nov	100.8 mm (4.0 in)	22 November 1965
Dec	142.2 mm (5.6 in)	3 December 1966

Period of Record Coverage

1968 to 1981

6 years of record at Fontana 5 N, 1968 to 1981. 6 years have data for under 90 percent of days and are left out of rankings: 1968, 1969, 1975, 1976, 1978, 1981.

Latest Records

Latest records at Fontana 5 N
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
16 September 1984	Fontana 5 N, US	daily rain	2.0 mm (0.08 in)	0.7 mm (0.03 in)	2 years	3 of 100 (Routine)
7 June 1984	Fontana 5 N, US	daily rain	2.8 mm (0.11 in)	1.3 mm (0.05 in)	31 years	14 of 100 (Routine)
18 April 1984	Fontana 5 N, US	daily rain	25.4 mm (1.0 in)	5.6 mm (0.22 in)	1 year	7 of 100 (Routine)
26 March 1984	Fontana 5 N, US	daily rain	3.6 mm (0.14 in)	2.1 mm (0.08 in)	14 years	8 of 100 (Routine)
25 December 1983	Fontana 5 N, US	daily rain	78.5 mm (3.1 in)	37.9 mm (1.5 in)	12 years	20 of 100 (Routine)
25 November 1983	Fontana 5 N, US	daily rain	73.7 mm (2.9 in)	54.4 mm (2.1 in)	21 years	34 of 100 (Routine)
12 November 1983	Fontana 5 N, US	daily rain	42.2 mm (1.7 in)	15.3 mm (0.6 in)	6 years	12 of 100 (Routine)
5 October 1983	Fontana 5 N, US	daily rain	3.6 mm (0.14 in)	2.3 mm (0.09 in)	16 years	10 of 100 (Routine)
1 October 1983	Fontana 5 N, US	daily rain	69.1 mm (2.7 in)	60.7 mm (2.4 in)	1 year	43 of 100 (Notable)
30 September 1983	Fontana 5 N, US	daily rain	21.6 mm (0.9 in)	21.6 mm (0.9 in)	29 years	20 of 100 (Routine)
29 September 1983	Fontana 5 N, US	daily rain	6.4 mm (0.25 in)	3.9 mm (0.15 in)	24 years	13 of 100 (Routine)
19 August 1983	Fontana 5 N, US	daily rain	8.1 mm (0.32 in)	8.1 mm (0.32 in)	29 years	19 of 100 (Routine)
17 August 1983	Fontana 5 N, US	monthly rain	52.1 mm (2.1 in)	7.6 mm (0.30 in)	5 years	21 of 100 (Routine)
16 August 1983	Fontana 5 N, US	daily rain	13.5 mm (0.5 in)	10.2 mm (0.4 in)	5 years	14 of 100 (Routine)
9 August 1983	Fontana 5 N, US	daily rain	18.0 mm (0.7 in)	18.0 mm (0.7 in)	29 years	20 of 100 (Routine)
7 August 1983	Fontana 5 N, US	daily rain (Tie)	0.3 mm (0.01 in)	tie	24 years	2 of 100 (Routine)
1 June 1983	Fontana 5 N, US	daily rain	0.8 mm (0.03 in)	0.3 mm (0.01 in)	16 years	7 of 100 (Routine)
29 April 1983	Fontana 5 N, US	daily rain	52.8 mm (2.1 in)	49.2 mm (1.9 in)	16 years	47 of 100 (Notable)
20 April 1983	Fontana 5 N, US	daily rain	50.8 mm (2.0 in)	37.8 mm (1.5 in)	25 years	42 of 100 (Notable)
18 April 1983	Fontana 5 N, US	daily rain	19.8 mm (0.8 in)	3.5 mm (0.14 in)	25 years	12 of 100 (Routine)

Extremes by Year

1953 to 1984

Yearly extremes at Fontana 5 N: 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)	1978	26.7 C (80.1 F)	6
Coldest night (TNn)	0.0 C (32.0 F)	1969	6.7 C (44.1 F)	6
Wettest day (Rx1day)	273.3 mm (10.8 in)	1969	82.9 mm (3.3 in)	32
Wettest five days (Rx5day)	479.5 mm (18.9 in)	1969	143.7 mm (5.7 in)	32
Longest dry spell (CDD)	194 days	1954	103 days	32

Hottest day (TXx)

The hottest day of the year at Fontana 5 N, 1953 to 1984. The record is 39.4 C (102.9 F) in 1978, marked on the chart; the median year is 26.7 C (80.1 F).

Hottest day (TXx) at Fontana 5 N by year
Year	Hottest day (TXx)
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	20.0 C (68.0 F)
1969	26.7 C (80.1 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	25.6 C (78.1 F)
1976	26.7 C (80.1 F)
1977	n/a
1978	39.4 C (102.9 F)
1979	n/a
1980	n/a
1981	28.9 C (84.0 F)
1982	n/a
1983	n/a
1984	n/a

Coldest night (TNn)

The coldest night of the year at Fontana 5 N, 1953 to 1984. The record is 0.0 C (32.0 F) in 1969, marked on the chart; the median year is 6.7 C (44.1 F).

Coldest night (TNn) at Fontana 5 N by year
Year	Coldest night (TNn)
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	6.1 C (43.0 F)
1969	0.0 C (32.0 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	6.7 C (44.1 F)
1976	6.7 C (44.1 F)
1977	n/a
1978	17.2 C (63.0 F)
1979	n/a
1980	n/a
1981	6.7 C (44.1 F)
1982	n/a
1983	n/a
1984	n/a

Wettest day (Rx1day)

The wettest day of the year at Fontana 5 N, 1953 to 1984. The record is 273.3 mm (10.8 in) in 1969, marked on the chart; the median year is 82.9 mm (3.3 in).

Wettest day (Rx1day) at Fontana 5 N by year
Year	Wettest day (Rx1day)
1953	23.1 mm (0.9 in)
1954	128.0 mm (5.0 in)
1955	48.3 mm (1.9 in)
1956	257.8 mm (10.1 in)
1957	83.3 mm (3.3 in)
1958	78.0 mm (3.1 in)
1959	60.5 mm (2.4 in)
1960	35.8 mm (1.4 in)
1961	69.9 mm (2.8 in)
1962	79.5 mm (3.1 in)
1963	94.2 mm (3.7 in)
1964	50.5 mm (2.0 in)
1965	100.8 mm (4.0 in)
1966	142.2 mm (5.6 in)
1967	84.3 mm (3.3 in)
1968	97.3 mm (3.8 in)
1969	273.3 mm (10.8 in)
1970	82.6 mm (3.3 in)
1971	101.9 mm (4.0 in)
1972	50.3 mm (2.0 in)
1973	91.4 mm (3.6 in)
1974	77.2 mm (3.0 in)
1975	39.4 mm (1.6 in)
1976	57.9 mm (2.3 in)
1977	71.9 mm (2.8 in)
1978	116.8 mm (4.6 in)
1979	85.1 mm (3.4 in)
1980	155.2 mm (6.1 in)
1981	53.6 mm (2.1 in)
1982	115.3 mm (4.5 in)
1983	88.1 mm (3.5 in)
1984	25.4 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Fontana 5 N, 1953 to 1984. The record is 479.5 mm (18.9 in) in 1969, marked on the chart; the median year is 143.7 mm (5.7 in).

Wettest five days (Rx5day) at Fontana 5 N by year
Year	Wettest five days (Rx5day)
1953	36.4 mm (1.4 in)
1954	177.8 mm (7.0 in)
1955	83.8 mm (3.3 in)
1956	355.3 mm (14.0 in)
1957	126.1 mm (5.0 in)
1958	139.7 mm (5.5 in)
1959	72.7 mm (2.9 in)
1960	87.1 mm (3.4 in)
1961	83.6 mm (3.3 in)
1962	174.0 mm (6.9 in)
1963	115.6 mm (4.6 in)
1964	89.7 mm (3.5 in)
1965	205.4 mm (8.1 in)
1966	385.1 mm (15.2 in)
1967	184.1 mm (7.2 in)
1968	102.1 mm (4.0 in)
1969	479.5 mm (18.9 in)
1970	151.5 mm (6.0 in)
1971	213.1 mm (8.4 in)
1972	78.5 mm (3.1 in)
1973	132.8 mm (5.2 in)
1974	244.3 mm (9.6 in)
1975	117.6 mm (4.6 in)
1976	147.7 mm (5.8 in)
1977	157.2 mm (6.2 in)
1978	304.6 mm (12.0 in)
1979	111.3 mm (4.4 in)
1980	358.3 mm (14.1 in)
1981	71.9 mm (2.8 in)
1982	190.8 mm (7.5 in)
1983	277.9 mm (10.9 in)
1984	25.4 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Fontana 5 N, 1953 to 1984. The record is 194 days in 1954, marked on the chart; the median year is 103 days.

Longest dry spell (CDD) at Fontana 5 N by year
Year	Longest dry spell (CDD)
1953	136 days
1954	194 days
1955	92 days
1956	74 days
1957	122 days
1958	116 days
1959	148 days
1960	125 days
1961	102 days
1962	139 days
1963	74 days
1964	107 days
1965	56 days
1966	130 days
1967	80 days
1968	66 days
1969	101 days
1970	118 days
1971	89 days
1972	72 days
1973	134 days
1974	140 days
1975	110 days
1976	45 days
1977	78 days
1978	126 days
1979	91 days
1980	140 days
1981	103 days
1982	100 days
1983	99 days
1984	100 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

30 years, 1954 to 1983

A day with at least 80.6 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 319.4 mm (12.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Fontana 5 N: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	80.6 mm (3.2 in)
5 years	121.3 mm (4.8 in)
10 years	155.7 mm (6.1 in)
25 years	209.9 mm (8.3 in)
50 years	259.9 mm (10.2 in)	Longer than the 30 years of record
100 years	319.4 mm (12.6 in)	Longer than the 30 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, 30 years of values from 1954 to 1983.

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: 273.3 mm (10.8 in) in 1969; 257.8 mm (10.1 in) in 1956; 155.2 mm (6.1 in) in 1980.

Download the Data

Data for Fontana 5 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Fontana 5 N 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.

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