Iosepa South Rch Weather Records (USC00424233)

Record envelope, standing records and threshold days for Iosepa South Rch (USC00424233), Utah, United States, with 49 years of record.

Key Facts for Iosepa South Rch

Iosepa South Rch (USC00424233) is a weather station in Utah, United States at 40.50 latitude and -112.75 longitude, 1,327 m (4,354 ft) above sea level.
The station reports from 1910 to 1958, 49 years of record.
1,464 records set at Iosepa South Rch still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Utah, United States, 40.50 latitude, -112.75 longitude.
Elevation: 1,327 m (4,354 ft).
Period of record: 1910 to 1958, 49 years.
Eligible elements: none yet.

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 Iosepa South Rch. 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 Iosepa South Rch, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	19.4 C (66.9 F)	-26.7 C (-16.1 F)	n/a	n/a
Feb	21.7 C (71.1 F)	-23.9 C (-11.0 F)	n/a	n/a
Mar	28.9 C (84.0 F)	-16.1 C (3.0 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-11.1 C (12.0 F)	n/a	n/a
May	37.8 C (100.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	40.6 C (105.1 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	1.1 C (34.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	3.9 C (39.0 F)	n/a	n/a
Sep	45.6 C (114.1 F)	-6.1 C (21.0 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-10.6 C (12.9 F)	n/a	n/a
Nov	26.1 C (79.0 F)	-22.8 C (-9.0 F)	n/a	n/a
Dec	23.3 C (73.9 F)	-23.9 C (-11.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Iosepa South Rch still stand. 1911 holds the most, with 140.

Wettest Day of Each Month

Dec: 33.0 mm (1.3 in)

The wettest day on record for each calendar month at Iosepa South Rch. The most was 33.0 mm (1.3 in) on 4 December 1954.

Record daily precipitation for each month at Iosepa South Rch
Month	Record daily precipitation (mm)	Date
Jan	28.4 mm (1.1 in)	26 January 1914
Feb	19.1 mm (0.8 in)	18 February 1913
Mar	23.1 mm (0.9 in)	5 March 1915
Apr	26.4 mm (1.0 in)	23 April 1957
May	25.7 mm (1.0 in)	16 May 1952
Jun	17.8 mm (0.7 in)	7 June 1953
Jul	15.0 mm (0.6 in)	18 July 1912
Aug	30.5 mm (1.2 in)	1 August 1953
Sep	15.5 mm (0.6 in)	30 September 1911
Oct	32.8 mm (1.3 in)	8 October 1914
Nov	22.9 mm (0.9 in)	2 November 1913
Dec	33.0 mm (1.3 in)	4 December 1954

Period of Record Coverage

1910 to 1958

16 years of record at Iosepa South Rch, 1910 to 1958. 6 years have data for under 90 percent of days and are left out of rankings: 1910, 1914, 1915, 1916, 1917, 1951.

Days with data per year at Iosepa South Rch
Year	Days with data	Share of year	Complete
1910	114	31%	No
1911	352	96%	Yes
1912	350	96%	Yes
1913	358	98%	Yes
1914	229	63%	No
1915	271	74%	No
1916	135	37%	No
1917	97	27%	No
1951	122	33%	No
1952	347	95%	Yes
1953	343	94%	Yes
1954	360	99%	Yes
1955	329	90%	Yes
1956	354	97%	Yes
1957	344	94%	Yes
1958	353	97%	Yes

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1910 to 1958

Yearly extremes at Iosepa South Rch: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	1910	38.1 C (100.5 F)	16
Coldest night (TNn)	-26.7 C (-16.1 F)	1917	-20.3 C (-4.5 F)	16
Wettest day (Rx1day)	33.0 mm (1.3 in)	1954	23.2 mm (0.9 in)	16
Wettest five days (Rx5day)	66.0 mm (2.6 in)	1912	25.5 mm (1.0 in)	16
Longest dry spell (CDD)	88 days	1958	33 days	16

Hottest day (TXx)

The hottest day of the year at Iosepa South Rch, 1910 to 1958. The record is 45.6 C (114.1 F) in 1910, marked on the chart; the median year is 38.1 C (100.5 F).

Hottest day (TXx) at Iosepa South Rch by year
Year	Hottest day (TXx)
1910	45.6 C (114.1 F)
1911	40.0 C (104.0 F)
1912	37.8 C (100.0 F)
1913	37.8 C (100.0 F)
1914	30.0 C (86.0 F)
1915	37.2 C (99.0 F)
1916	20.6 C (69.1 F)
1917	25.0 C (77.0 F)
1951	33.3 C (91.9 F)
1952	37.8 C (100.0 F)
1953	38.3 C (100.9 F)
1954	40.6 C (105.1 F)
1955	40.6 C (105.1 F)
1956	39.4 C (102.9 F)
1957	40.0 C (104.0 F)
1958	39.4 C (102.9 F)

Coldest night (TNn)

The coldest night of the year at Iosepa South Rch, 1910 to 1958. The record is -26.7 C (-16.1 F) in 1917, marked on the chart; the median year is -20.3 C (-4.5 F).

Coldest night (TNn) at Iosepa South Rch by year
Year	Coldest night (TNn)
1910	-11.1 C (12.0 F)
1911	-17.8 C (0.0 F)
1912	-20.0 C (-4.0 F)
1913	-20.6 C (-5.1 F)
1914	-18.3 C (-0.9 F)
1915	-22.2 C (-8.0 F)
1916	-22.2 C (-8.0 F)
1917	-26.7 C (-16.1 F)
1951	-19.4 C (-2.9 F)
1952	-21.1 C (-6.0 F)
1953	-17.2 C (1.0 F)
1954	-19.4 C (-2.9 F)
1955	-23.9 C (-11.0 F)
1956	-23.9 C (-11.0 F)
1957	-22.2 C (-8.0 F)
1958	-18.3 C (-0.9 F)

Wettest day (Rx1day)

The wettest day of the year at Iosepa South Rch, 1910 to 1958. The record is 33.0 mm (1.3 in) in 1954, marked on the chart; the median year is 23.2 mm (0.9 in).

Wettest day (Rx1day) at Iosepa South Rch by year
Year	Wettest day (Rx1day)
1910	8.4 mm (0.33 in)
1911	19.3 mm (0.8 in)
1912	26.4 mm (1.0 in)
1913	22.9 mm (0.9 in)
1914	32.8 mm (1.3 in)
1915	23.6 mm (0.9 in)
1916	23.4 mm (0.9 in)
1917	17.8 mm (0.7 in)
1951	10.2 mm (0.4 in)
1952	25.7 mm (1.0 in)
1953	30.5 mm (1.2 in)
1954	33.0 mm (1.3 in)
1955	12.7 mm (0.5 in)
1956	22.9 mm (0.9 in)
1957	26.4 mm (1.0 in)
1958	13.0 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Iosepa South Rch, 1910 to 1958. The record is 66.0 mm (2.6 in) in 1912, marked on the chart; the median year is 25.5 mm (1.0 in).

Wettest five days (Rx5day) at Iosepa South Rch by year
Year	Wettest five days (Rx5day)
1910	15.7 mm (0.6 in)
1911	20.3 mm (0.8 in)
1912	66.0 mm (2.6 in)
1913	34.5 mm (1.4 in)
1914	13.9 mm (0.5 in)
1915	25.2 mm (1.0 in)
1916	29.0 mm (1.1 in)
1917	22.4 mm (0.9 in)
1951	21.6 mm (0.9 in)
1952	25.7 mm (1.0 in)
1953	35.6 mm (1.4 in)
1954	33.0 mm (1.3 in)
1955	20.3 mm (0.8 in)
1956	29.7 mm (1.2 in)
1957	61.5 mm (2.4 in)
1958	22.2 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Iosepa South Rch, 1910 to 1958. The record is 88 days in 1958, marked on the chart; the median year is 33 days.

Longest dry spell (CDD) at Iosepa South Rch by year
Year	Longest dry spell (CDD)
1910	30 days
1911	9 days
1912	18 days
1913	17 days
1914	17 days
1915	12 days
1916	31 days
1917	23 days
1951	35 days
1952	80 days
1953	64 days
1954	43 days
1955	41 days
1956	52 days
1957	40 days
1958	88 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.

Download the Data

Data for Iosepa South Rch standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Iosepa South Rch 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).