Daily records
Page built 2026-10-17
Data as of 2025-12-31
Search
Built 2026-10-17 (17 October 2026)

Castle Rock Weather Records (USC00421222)

Record envelope, standing records and threshold days for Castle Rock (USC00421222), Utah, United States, with 58 years of record.

Key Facts for Castle Rock

  • Castle Rock (USC00421222) is a weather station in Utah, United States at 41.13 latitude and -111.17 longitude, 1,967 m (6,453 ft) above sea level.
  • The station reports from 1904 to 1961, 58 years of record.
  • 1,460 records set at Castle Rock 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, 41.13 latitude, -111.17 longitude.
  • Elevation: 1,967 m (6,453 ft).
  • Period of record: 1904 to 1961, 58 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Castle Rock, with 2026 drawn through them The band shows the record high and record low for each calendar day at Castle Rock. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Castle Rock. 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 Castle Rock, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan12.2 C (54.0 F)-35.6 C (-32.1 F)n/an/a
Feb11.1 C (52.0 F)-32.2 C (-26.0 F)n/an/a
Mar16.1 C (61.0 F)-23.3 C (-9.9 F)n/an/a
Apr25.6 C (78.1 F)-15.6 C (3.9 F)n/an/a
May27.2 C (81.0 F)-9.4 C (15.1 F)n/an/a
Jun35.0 C (95.0 F)-3.9 C (25.0 F)n/an/a
Jul35.0 C (95.0 F)1.1 C (34.0 F)n/an/a
Aug32.8 C (91.0 F)-3.9 C (25.0 F)n/an/a
Sep28.3 C (82.9 F)-14.4 C (6.1 F)n/an/a
Oct23.9 C (75.0 F)-15.0 C (5.0 F)n/an/a
Nov20.0 C (68.0 F)-25.0 C (-13.0 F)n/an/a
Dec12.2 C (54.0 F)-38.9 C (-38.0 F)n/an/a

Which Years Hold Standing Records

1,460 standing records
Standing records at Castle Rock by the year they were set 1,460 records at Castle Rock still stand. 1925 holds the most, with 514. 02004006001924: 1451925: 5141926: 4841927: 2771928: 4019241925192619271928
1,460 records at Castle Rock still stand. 1925 holds the most, with 514.
Standing records at Castle Rock by the year they were set
Year setStanding records
1924145
1925514
1926484
1927277
192840

Wettest Day of Each Month

May: 50.8 mm (2.0 in)
Record daily precipitation for each month at Castle Rock The wettest day on record for each calendar month at Castle Rock. The most was 50.8 mm (2.0 in) on 24 May 1907. 0204060 Jan: 20.3 mm (0.8 in), 13 January 1909 Jan Feb: 29.2 mm (1.1 in), 2 February 1907 Feb Mar: 23.1 mm (0.9 in), 25 March 1920 Mar Apr: 38.4 mm (1.5 in), 23 April 1925 Apr May: 50.8 mm (2.0 in), 24 May 1907 May Jun: 25.4 mm (1.0 in), 26 June 1913 Jun Jul: 46.2 mm (1.8 in), 1 July 1925 Jul Aug: 43.9 mm (1.7 in), 8 August 1926 Aug Sep: 34.3 mm (1.4 in), 11 September 1915 Sep Oct: 25.4 mm (1.0 in), 24 October 1921 Oct Nov: 33.0 mm (1.3 in), 21 November 1909 Nov Dec: 31.5 mm (1.2 in), 24 December 1942 Dec
The wettest day on record for each calendar month at Castle Rock. The most was 50.8 mm (2.0 in) on 24 May 1907.
Record daily precipitation for each month at Castle Rock
MonthRecord daily precipitation (mm)Date
Jan20.3 mm (0.8 in)13 January 1909
Feb29.2 mm (1.1 in)2 February 1907
Mar23.1 mm (0.9 in)25 March 1920
Apr38.4 mm (1.5 in)23 April 1925
May50.8 mm (2.0 in)24 May 1907
Jun25.4 mm (1.0 in)26 June 1913
Jul46.2 mm (1.8 in)1 July 1925
Aug43.9 mm (1.7 in)8 August 1926
Sep34.3 mm (1.4 in)11 September 1915
Oct25.4 mm (1.0 in)24 October 1921
Nov33.0 mm (1.3 in)21 November 1909
Dec31.5 mm (1.2 in)24 December 1942

Period of Record Coverage

1924 to 1928
Days with data per year at Castle Rock 5 years of record at Castle Rock, 1924 to 1928. 3 years have data for under 90 percent of days and are left out of rankings: 1924, 1927, 1928. 1924: 103 of 366 days1925: 341 of 365 days1926: 340 of 365 days1927: 208 of 365 days1928: 42 of 366 days1925
5 years of record at Castle Rock, 1924 to 1928. 3 years have data for under 90 percent of days and are left out of rankings: 1924, 1927, 1928.
Days with data per year at Castle Rock
YearDays with dataShare of yearComplete
192410328%No
192534193%Yes
192634093%Yes
192720857%No
19284211%No

Latest Records

0

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

Extremes by Year

1904 to 1961
Yearly extremes at Castle Rock: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.0 C (95.0 F)192531.1 C (88.0 F)5
Coldest night (TNn)-38.9 C (-38.0 F)1924-31.7 C (-25.1 F)5
Wettest day (Rx1day)50.8 mm (2.0 in)190724.9 mm (1.0 in)33
Wettest five days (Rx5day)72.7 mm (2.9 in)191339.4 mm (1.6 in)31
Longest dry spell (CDD)58 days195624 days33

Hottest day (TXx)

Hottest day (TXx) at Castle Rock by year The hottest day of the year at Castle Rock, 1904 to 1961. The record is 35.0 C (95.0 F) in 1925, marked on the chart; the median year is 31.1 C (88.0 F). 10203040191019201930194019501960Record: 35.0 C (95.0 F) in 1925
The hottest day of the year at Castle Rock, 1904 to 1961. The record is 35.0 C (95.0 F) in 1925, marked on the chart; the median year is 31.1 C (88.0 F).
Hottest day (TXx) at Castle Rock by year
YearHottest day (TXx)
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
192424.4 C (75.9 F)
192535.0 C (95.0 F)
192635.0 C (95.0 F)
192731.1 C (88.0 F)
192810.0 C (50.0 F)
1941n/a
1942n/a
1943n/a
1956n/a
1957n/a
1958n/a
1959n/a
1961n/a

Coldest night (TNn)

Coldest night (TNn) at Castle Rock by year The coldest night of the year at Castle Rock, 1904 to 1961. The record is -38.9 C (-38.0 F) in 1924, marked on the chart; the median year is -31.7 C (-25.1 F). -40-35-30-25191019201930194019501960Record: -38.9 C (-38.0 F) in 1924
The coldest night of the year at Castle Rock, 1904 to 1961. The record is -38.9 C (-38.0 F) in 1924, marked on the chart; the median year is -31.7 C (-25.1 F).
Coldest night (TNn) at Castle Rock by year
YearColdest night (TNn)
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924-38.9 C (-38.0 F)
1925-31.7 C (-25.1 F)
1926-31.7 C (-25.1 F)
1927-35.6 C (-32.1 F)
1928-27.2 C (-17.0 F)
1941n/a
1942n/a
1943n/a
1956n/a
1957n/a
1958n/a
1959n/a
1961n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Castle Rock by year The wettest day of the year at Castle Rock, 1904 to 1961. The record is 50.8 mm (2.0 in) in 1907, marked on the chart; the median year is 24.9 mm (1.0 in). 0204060191019201930194019501960Record: 50.8 mm (2.0 in) in 1907
The wettest day of the year at Castle Rock, 1904 to 1961. The record is 50.8 mm (2.0 in) in 1907, marked on the chart; the median year is 24.9 mm (1.0 in).
Wettest day (Rx1day) at Castle Rock by year
YearWettest day (Rx1day)
190430.5 mm (1.2 in)
190517.5 mm (0.7 in)
190619.6 mm (0.8 in)
190750.8 mm (2.0 in)
190820.3 mm (0.8 in)
190933.0 mm (1.3 in)
191012.7 mm (0.5 in)
191133.0 mm (1.3 in)
191219.6 mm (0.8 in)
191325.4 mm (1.0 in)
191419.1 mm (0.8 in)
191534.3 mm (1.4 in)
191619.1 mm (0.8 in)
191731.8 mm (1.3 in)
191825.4 mm (1.0 in)
191915.2 mm (0.6 in)
192024.9 mm (1.0 in)
192125.4 mm (1.0 in)
192221.6 mm (0.9 in)
192343.2 mm (1.7 in)
192419.8 mm (0.8 in)
192546.2 mm (1.8 in)
192643.9 mm (1.7 in)
192718.5 mm (0.7 in)
19282.0 mm (0.08 in)
194129.2 mm (1.1 in)
194231.5 mm (1.2 in)
194310.2 mm (0.4 in)
195620.3 mm (0.8 in)
195725.4 mm (1.0 in)
195825.4 mm (1.0 in)
195920.8 mm (0.8 in)
196115.7 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Castle Rock by year The wettest five days of the year at Castle Rock, 1904 to 1961. The record is 72.7 mm (2.9 in) in 1913, marked on the chart; the median year is 39.4 mm (1.6 in). 020406080191019201930194019501960Record: 72.7 mm (2.9 in) in 1913
The wettest five days of the year at Castle Rock, 1904 to 1961. The record is 72.7 mm (2.9 in) in 1913, marked on the chart; the median year is 39.4 mm (1.6 in).
Wettest five days (Rx5day) at Castle Rock by year
YearWettest five days (Rx5day)
190438.2 mm (1.5 in)
190529.2 mm (1.1 in)
190650.6 mm (2.0 in)
190766.6 mm (2.6 in)
190830.5 mm (1.2 in)
190961.7 mm (2.4 in)
191031.7 mm (1.2 in)
191131.0 mm (1.2 in)
191235.6 mm (1.4 in)
191372.7 mm (2.9 in)
191459.4 mm (2.3 in)
191522.1 mm (0.9 in)
191641.3 mm (1.6 in)
191752.2 mm (2.1 in)
1918n/a
191939.4 mm (1.6 in)
192035.4 mm (1.4 in)
192143.2 mm (1.7 in)
192236.9 mm (1.5 in)
192348.3 mm (1.9 in)
192417.3 mm (0.7 in)
192558.4 mm (2.3 in)
192655.3 mm (2.2 in)
192722.6 mm (0.9 in)
1928n/a
194147.7 mm (1.9 in)
194236.8 mm (1.4 in)
194317.7 mm (0.7 in)
195626.9 mm (1.1 in)
195749.6 mm (2.0 in)
195852.6 mm (2.1 in)
195956.3 mm (2.2 in)
196125.6 mm (1.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Castle Rock by year The longest dry spell of the year at Castle Rock, 1904 to 1961. The record is 58 days in 1956, marked on the chart; the median year is 24 days. 0204060191019201930194019501960Record: 58 days in 1956
The longest dry spell of the year at Castle Rock, 1904 to 1961. The record is 58 days in 1956, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Castle Rock by year
YearLongest dry spell (CDD)
190427 days
190527 days
190633 days
190731 days
190833 days
190923 days
191011 days
19119 days
191213 days
191317 days
19146 days
19156 days
191624 days
191751 days
19181 day
191921 days
192018 days
192136 days
192252 days
192319 days
192430 days
192519 days
192634 days
192719 days
19281 day
194118 days
194244 days
194318 days
195658 days
195730 days
195841 days
195934 days
196128 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 Castle Rock standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Castle Rock 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

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