Tonto Springs Rs 4 W Weather Records (USC00028657)

Record envelope, standing records and threshold days for Tonto Springs Rs 4 W (USC00028657), Arizona, United States, with 53 years of record.

Key Facts for Tonto Springs Rs 4 W

Tonto Springs Rs 4 W (USC00028657) is a weather station in Arizona, United States at 34.62 latitude and -112.75 longitude, 1,464 m (4,803 ft) above sea level.
The station reports from 1914 to 1966, 53 years of record.
0 records set at Tonto Springs Rs 4 W still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Tonto Springs Rs 4 W set a daily record precipitation of 23.6 mm (0.9 in) on 14 September 1966.

About the Station

Location: Arizona, United States, 34.62 latitude, -112.75 longitude.
Elevation: 1,464 m (4,803 ft).
Period of record: 1914 to 1966, 53 years.
Eligible elements: prcp.

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 Tonto Springs Rs 4 W. 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 Tonto Springs Rs 4 W, 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	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	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Tonto Springs Rs 4 W still stand.

Wettest Day of Each Month

Sep: 89.2 mm (3.5 in)

The wettest day on record for each calendar month at Tonto Springs Rs 4 W. The most was 89.2 mm (3.5 in) on 20 September 1933.

Record daily precipitation for each month at Tonto Springs Rs 4 W
Month	Record daily precipitation (mm)	Date
Jan	74.7 mm (2.9 in)	28 January 1916
Feb	45.2 mm (1.8 in)	4 February 1958
Mar	58.4 mm (2.3 in)	8 March 1918
Apr	83.1 mm (3.3 in)	17 April 1917
May	39.9 mm (1.6 in)	6 May 1930
Jun	27.9 mm (1.1 in)	13 June 1955
Jul	85.3 mm (3.4 in)	21 July 1966
Aug	65.0 mm (2.6 in)	4 August 1931
Sep	89.2 mm (3.5 in)	20 September 1933
Oct	59.2 mm (2.3 in)	5 October 1925
Nov	75.7 mm (3.0 in)	27 November 1919
Dec	59.7 mm (2.4 in)	23 December 1948

Latest Records

Latest records at Tonto Springs Rs 4 W
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
14 September 1966	Tonto Springs Rs 4 W, US	daily rain	23.6 mm (0.9 in)	9.4 mm (0.37 in)	3 years	13 of 100 (Routine)
19 August 1966	Tonto Springs Rs 4 W, US	daily rain	16.5 mm (0.6 in)	1.0 mm (0.04 in)	29 years	13 of 100 (Routine)
21 July 1966	Tonto Springs Rs 4 W, US	monthly rain	85.3 mm (3.4 in)	18.2 mm (0.7 in)	43 years	47 of 100 (Notable)
30 June 1966	Tonto Springs Rs 4 W, US	daily rain	16.3 mm (0.6 in)	1.6 mm (0.06 in)	40 years	19 of 100 (Routine)
2 March 1966	Tonto Springs Rs 4 W, US	daily rain	17.3 mm (0.7 in)	10.2 mm (0.4 in)	1 year	15 of 100 (Routine)
13 December 1965	Tonto Springs Rs 4 W, US	daily rain	7.6 mm (0.30 in)	5.1 mm (0.20 in)	6 years	10 of 100 (Routine)
10 December 1965	Tonto Springs Rs 4 W, US	daily rain	52.3 mm (2.1 in)	29.4 mm (1.2 in)	38 years	41 of 100 (Notable)
25 November 1965	Tonto Springs Rs 4 W, US	daily rain	35.6 mm (1.4 in)	24.9 mm (1.0 in)	26 years	37 of 100 (Notable)
24 November 1965	Tonto Springs Rs 4 W, US	daily rain	27.9 mm (1.1 in)	11.9 mm (0.5 in)	47 years	31 of 100 (Routine)
23 November 1965	Tonto Springs Rs 4 W, US	daily rain	40.1 mm (1.6 in)	16.0 mm (0.6 in)	14 years	25 of 100 (Routine)
22 November 1965	Tonto Springs Rs 4 W, US	daily rain	13.2 mm (0.5 in)	0.5 mm (0.02 in)	18 years	10 of 100 (Routine)
17 November 1965	Tonto Springs Rs 4 W, US	daily rain	20.8 mm (0.8 in)	13.2 mm (0.5 in)	31 years	20 of 100 (Routine)
16 October 1965	Tonto Springs Rs 4 W, US	daily rain	10.2 mm (0.4 in)	1.1 mm (0.04 in)	3 years	5 of 100 (Routine)
3 September 1965	Tonto Springs Rs 4 W, US	daily rain	41.7 mm (1.6 in)	28.0 mm (1.1 in)	32 years	39 of 100 (Notable)
23 June 1965	Tonto Springs Rs 4 W, US	daily rain	5.6 mm (0.22 in)	4.6 mm (0.18 in)	28 years	20 of 100 (Routine)
9 June 1965	Tonto Springs Rs 4 W, US	daily rain	5.8 mm (0.23 in)	5.8 mm (0.23 in)	50 years	20 of 100 (Routine)
24 May 1965	Tonto Springs Rs 4 W, US	daily rain	3.0 mm (0.12 in)	0.7 mm (0.03 in)	24 years	13 of 100 (Routine)
12 May 1965	Tonto Springs Rs 4 W, US	daily rain	7.9 mm (0.31 in)	0.3 mm (0.01 in)	8 years	7 of 100 (Routine)
10 April 1965	Tonto Springs Rs 4 W, US	daily rain	13.2 mm (0.5 in)	7.6 mm (0.30 in)	42 years	20 of 100 (Routine)
4 April 1965	Tonto Springs Rs 4 W, US	daily rain	21.3 mm (0.8 in)	5.8 mm (0.23 in)	36 years	19 of 100 (Routine)

Extremes by Year

1914 to 1966

Yearly extremes at Tonto Springs Rs 4 W: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	89.2 mm (3.5 in)	1933	45.0 mm (1.8 in)	51
Wettest five days (Rx5day)	155.1 mm (6.1 in)	1931	70.9 mm (2.8 in)	51
Longest dry spell (CDD)	94 days	1948	42 days	51

Wettest day (Rx1day)

The wettest day of the year at Tonto Springs Rs 4 W, 1914 to 1966. The record is 89.2 mm (3.5 in) in 1933, marked on the chart; the median year is 45.0 mm (1.8 in).

Wettest day (Rx1day) at Tonto Springs Rs 4 W by year
Year	Wettest day (Rx1day)
1914	23.4 mm (0.9 in)
1915	34.0 mm (1.3 in)
1916	74.7 mm (2.9 in)
1917	83.1 mm (3.3 in)
1918	58.4 mm (2.3 in)
1919	75.7 mm (3.0 in)
1920	45.0 mm (1.8 in)
1921	53.3 mm (2.1 in)
1922	33.8 mm (1.3 in)
1923	67.1 mm (2.6 in)
1924	31.8 mm (1.3 in)
1925	59.2 mm (2.3 in)
1926	70.9 mm (2.8 in)
1927	33.0 mm (1.3 in)
1928	21.8 mm (0.9 in)
1929	16.8 mm (0.7 in)
1930	39.9 mm (1.6 in)
1931	65.0 mm (2.6 in)
1932	39.9 mm (1.6 in)
1933	89.2 mm (3.5 in)
1934	57.9 mm (2.3 in)
1935	50.8 mm (2.0 in)
1936	36.6 mm (1.4 in)
1937	27.9 mm (1.1 in)
1939	18.3 mm (0.7 in)
1940	49.0 mm (1.9 in)
1941	45.7 mm (1.8 in)
1942	33.0 mm (1.3 in)
1943	52.3 mm (2.1 in)
1944	43.2 mm (1.7 in)
1945	39.4 mm (1.6 in)
1946	40.9 mm (1.6 in)
1947	38.1 mm (1.5 in)
1948	62.2 mm (2.4 in)
1949	59.7 mm (2.4 in)
1951	47.0 mm (1.9 in)
1952	34.3 mm (1.4 in)
1953	58.4 mm (2.3 in)
1954	50.3 mm (2.0 in)
1955	30.5 mm (1.2 in)
1956	31.2 mm (1.2 in)
1957	45.7 mm (1.8 in)
1958	45.2 mm (1.8 in)
1959	43.2 mm (1.7 in)
1960	38.9 mm (1.5 in)
1961	23.6 mm (0.9 in)
1962	25.1 mm (1.0 in)
1963	59.9 mm (2.4 in)
1964	31.0 mm (1.2 in)
1965	52.3 mm (2.1 in)
1966	85.3 mm (3.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tonto Springs Rs 4 W, 1914 to 1966. The record is 155.1 mm (6.1 in) in 1931, marked on the chart; the median year is 70.9 mm (2.8 in).

Wettest five days (Rx5day) at Tonto Springs Rs 4 W by year
Year	Wettest five days (Rx5day)
1914	40.6 mm (1.6 in)
1915	68.5 mm (2.7 in)
1916	90.8 mm (3.6 in)
1917	127.3 mm (5.0 in)
1918	120.4 mm (4.7 in)
1919	114.3 mm (4.5 in)
1920	96.6 mm (3.8 in)
1921	93.3 mm (3.7 in)
1922	40.1 mm (1.6 in)
1923	76.3 mm (3.0 in)
1924	31.8 mm (1.3 in)
1925	59.2 mm (2.3 in)
1926	82.6 mm (3.3 in)
1927	74.4 mm (2.9 in)
1928	34.8 mm (1.4 in)
1929	44.7 mm (1.8 in)
1930	70.3 mm (2.8 in)
1931	155.1 mm (6.1 in)
1932	69.3 mm (2.7 in)
1933	91.5 mm (3.6 in)
1934	104.2 mm (4.1 in)
1935	72.6 mm (2.9 in)
1936	29.8 mm (1.2 in)
1937	31.7 mm (1.2 in)
1939	5.4 mm (0.21 in)
1940	65.0 mm (2.6 in)
1941	72.8 mm (2.9 in)
1942	33.0 mm (1.3 in)
1943	78.7 mm (3.1 in)
1944	40.9 mm (1.6 in)
1945	72.4 mm (2.9 in)
1946	67.1 mm (2.6 in)
1947	71.2 mm (2.8 in)
1948	110.0 mm (4.3 in)
1949	122.5 mm (4.8 in)
1951	66.3 mm (2.6 in)
1952	49.5 mm (1.9 in)
1953	82.3 mm (3.2 in)
1954	95.0 mm (3.7 in)
1955	70.3 mm (2.8 in)
1956	44.2 mm (1.7 in)
1957	66.0 mm (2.6 in)
1958	51.5 mm (2.0 in)
1959	76.2 mm (3.0 in)
1960	70.9 mm (2.8 in)
1961	41.4 mm (1.6 in)
1962	43.2 mm (1.7 in)
1963	111.0 mm (4.4 in)
1964	53.9 mm (2.1 in)
1965	124.7 mm (4.9 in)
1966	91.4 mm (3.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tonto Springs Rs 4 W, 1914 to 1966. The record is 94 days in 1948, marked on the chart; the median year is 42 days.

Longest dry spell (CDD) at Tonto Springs Rs 4 W by year
Year	Longest dry spell (CDD)
1914	30 days
1915	49 days
1916	69 days
1917	92 days
1918	46 days
1919	35 days
1920	59 days
1921	30 days
1922	33 days
1923	9 days
1924	73 days
1925	36 days
1926	36 days
1927	34 days
1928	44 days
1929	87 days
1930	26 days
1931	25 days
1932	30 days
1933	32 days
1934	42 days
1935	17 days
1936	50 days
1937	54 days
1939	24 days
1940	32 days
1941	31 days
1942	70 days
1943	81 days
1944	40 days
1945	88 days
1946	61 days
1947	71 days
1948	94 days
1949	6 days
1951	24 days
1952	40 days
1953	80 days
1954	38 days
1955	51 days
1956	57 days
1957	46 days
1958	38 days
1959	44 days
1960	35 days
1961	42 days
1962	54 days
1963	43 days
1964	36 days
1965	29 days
1966	85 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, 1916 to 1965

A day with at least 47.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 91.1 mm (3.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Tonto Springs Rs 4 W: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	47.1 mm (1.9 in)
5 years	61.0 mm (2.4 in)
10 years	69.3 mm (2.7 in)
25 years	78.8 mm (3.1 in)
50 years	85.2 mm (3.4 in)	Longer than the 30 years of record
100 years	91.1 mm (3.6 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 1916 to 1965.

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: 83.1 mm (3.3 in) in 1917; 75.7 mm (3.0 in) in 1919; 74.7 mm (2.9 in) in 1916.

Download the Data

Data for Tonto Springs Rs 4 W standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tonto Springs Rs 4 W 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).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	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	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	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	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a