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Red Rock Canyon - Spg Mt Rch S Weather Records (USC00266691)

Record envelope, standing records and threshold days for Red Rock Canyon - Spg Mt Rch S (USC00266691), Nevada, United States, with 49 years of record.

Key Facts for Red Rock Canyon - Spg Mt Rch S

  • Red Rock Canyon - Spg Mt Rch S (USC00266691) is a weather station in Nevada, United States at 36.07 latitude and -115.46 longitude, 1,152 m (3,780 ft) above sea level.
  • The station reports from 1977 to 2025, 49 years of record.
  • 1,464 records set at Red Rock Canyon - Spg Mt Rch S still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Red Rock Canyon - Spg Mt Rch S set a daily record precipitation of 4.3 mm (0.17 in) on 8 May 2025.

About the Station

  • Location: Nevada, United States, 36.07 latitude, -115.46 longitude.
  • Elevation: 1,152 m (3,780 ft).
  • Period of record: 1977 to 2025, 49 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Red Rock Canyon - Spg Mt Rch S, with 2026 drawn through them The band shows the record high and record low for each calendar day at Red Rock Canyon - Spg Mt Rch S. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Red Rock Canyon - Spg Mt Rch S. 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 Red Rock Canyon - Spg Mt Rch S, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.7 C (71.1 F)-12.8 C (9.0 F)n/an/a
Feb27.2 C (81.0 F)-12.8 C (9.0 F)n/an/a
Mar30.0 C (86.0 F)-6.1 C (21.0 F)n/an/a
Apr35.0 C (95.0 F)-4.4 C (24.1 F)n/an/a
May39.4 C (102.9 F)-2.2 C (28.0 F)n/an/a
Jun45.6 C (114.1 F)1.7 C (35.1 F)n/an/a
Jul43.9 C (111.0 F)7.2 C (45.0 F)n/an/a
Aug46.7 C (116.1 F)7.2 C (45.0 F)n/an/a
Sep38.9 C (102.0 F)0.0 C (32.0 F)n/an/a
Oct36.1 C (97.0 F)-3.3 C (26.1 F)n/an/a
Nov27.8 C (82.0 F)-8.9 C (16.0 F)n/an/a
Dec22.8 C (73.0 F)-16.1 C (3.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Red Rock Canyon - Spg Mt Rch S by the year they were set 1,464 records at Red Rock Canyon - Spg Mt Rch S still stand. 1989 holds the most, with 67. 0204060801977: 431978: 201979: 451980: 501981: 641982: 301983: 301984: 451985: 651986: 471987: 301988: 411989: 671990: 531991: 371992: 251993: 181994: 391995: 511996: 641997: 301998: 421999: 412000: 422001: 332002: 282003: 392004: 252005: 132006: 232007: 372008: 262009: 282010: 162011: 362012: 222013: 322014: 222015: 392016: 112017: 15197719821987199219972002200720122017
1,464 records at Red Rock Canyon - Spg Mt Rch S still stand. 1989 holds the most, with 67.
Standing records at Red Rock Canyon - Spg Mt Rch S by the year they were set
Year setStanding records
197743
197820
197945
198050
198164
198230
198330
198445
198565
198647
198730
198841
198967
199053
199137
199225
199318
199439
199551
199664
199730
199842
199941
200042
200133
200228
200339
200425
200513
200623
200737
200826
200928
201016
201136
201222
201332
201422
201539
201611
201715

Wettest Day of Each Month

Mar: 136.7 mm (5.4 in)
Record daily precipitation for each month at Red Rock Canyon - Spg Mt Rch S The wettest day on record for each calendar month at Red Rock Canyon - Spg Mt Rch S. The most was 136.7 mm (5.4 in) on 10 March 1986. 050100150 Jan: 49.8 mm (2.0 in), 29 January 1980 Jan Feb: 66.0 mm (2.6 in), 24 February 1998 Feb Mar: 136.7 mm (5.4 in), 10 March 1986 Mar Apr: 38.1 mm (1.5 in), 16 April 1978 Apr May: 20.3 mm (0.8 in), 13 May 1998 May Jun: 13.0 mm (0.5 in), 6 June 1993 Jun Jul: 54.1 mm (2.1 in), 20 July 1985 Jul Aug: 92.7 mm (3.6 in), 18 August 1983 Aug Sep: 33.0 mm (1.3 in), 8 September 2014 Sep Oct: 34.5 mm (1.4 in), 19 October 2005 Oct Nov: 37.3 mm (1.5 in), 22 November 1996 Nov Dec: 76.2 mm (3.0 in), 5 December 1992 Dec
The wettest day on record for each calendar month at Red Rock Canyon - Spg Mt Rch S. The most was 136.7 mm (5.4 in) on 10 March 1986.
Record daily precipitation for each month at Red Rock Canyon - Spg Mt Rch S
MonthRecord daily precipitation (mm)Date
Jan49.8 mm (2.0 in)29 January 1980
Feb66.0 mm (2.6 in)24 February 1998
Mar136.7 mm (5.4 in)10 March 1986
Apr38.1 mm (1.5 in)16 April 1978
May20.3 mm (0.8 in)13 May 1998
Jun13.0 mm (0.5 in)6 June 1993
Jul54.1 mm (2.1 in)20 July 1985
Aug92.7 mm (3.6 in)18 August 1983
Sep33.0 mm (1.3 in)8 September 2014
Oct34.5 mm (1.4 in)19 October 2005
Nov37.3 mm (1.5 in)22 November 1996
Dec76.2 mm (3.0 in)5 December 1992

Period of Record Coverage

1977 to 2017
Days with data per year at Red Rock Canyon - Spg Mt Rch S 41 years of record at Red Rock Canyon - Spg Mt Rch S, 1977 to 2017. 16 years have data for under 90 percent of days and are left out of rankings: 1977, 1978, 2000, 2002, 2003, 2004, 2005, 2006 and others. 1977: 239 of 365 days1978: 319 of 365 days1979: 364 of 365 days1980: 336 of 366 days1981: 363 of 365 days1982: 357 of 365 days1983: 362 of 365 days1984: 364 of 366 days1985: 330 of 365 days1986: 330 of 365 days1987: 357 of 365 days1988: 361 of 366 days1989: 362 of 365 days1990: 349 of 365 days1991: 354 of 365 days1992: 365 of 366 days1993: 362 of 365 days1994: 360 of 365 days1995: 331 of 365 days1996: 362 of 366 days1997: 361 of 365 days1998: 353 of 365 days1999: 330 of 365 days2000: 319 of 366 days2001: 339 of 365 days2002: 293 of 365 days2003: 313 of 365 days2004: 319 of 366 days2005: 284 of 365 days2006: 322 of 365 days2007: 352 of 365 days2008: 350 of 366 days2009: 312 of 365 days2010: 286 of 365 days2011: 292 of 365 days2012: 214 of 366 days2013: 316 of 365 days2014: 325 of 365 days2015: 340 of 365 days2016: 269 of 366 days2017: 152 of 365 days1980199020002010
41 years of record at Red Rock Canyon - Spg Mt Rch S, 1977 to 2017. 16 years have data for under 90 percent of days and are left out of rankings: 1977, 1978, 2000, 2002, 2003, 2004, 2005, 2006 and others.
Days with data per year at Red Rock Canyon - Spg Mt Rch S
YearDays with dataShare of yearComplete
197723965%No
197831987%No
1979364100%Yes
198033692%Yes
198136399%Yes
198235798%Yes
198336299%Yes
198436499%Yes
198533090%Yes
198633090%Yes
198735798%Yes
198836199%Yes
198936299%Yes
199034996%Yes
199135497%Yes
1992365100%Yes
199336299%Yes
199436099%Yes
199533191%Yes
199636299%Yes
199736199%Yes
199835397%Yes
199933090%Yes
200031987%No
200133993%Yes
200229380%No
200331386%No
200431987%No
200528478%No
200632288%No
200735296%Yes
200835096%Yes
200931285%No
201028678%No
201129280%No
201221458%No
201331687%No
201432589%No
201534093%Yes
201626973%No
201715242%No

Latest Records

20
Latest records at Red Rock Canyon - Spg Mt Rch S
DateStationRecordValueBeat old record byOld record stoodSignificance
8 May 2025Red Rock Canyon - Spg Mt Rch S, USdaily rain4.3 mm (0.17 in)0.5 mm (0.02 in)46 years18 of 100 (Routine)
7 May 2025Red Rock Canyon - Spg Mt Rch S, USdaily rain10.7 mm (0.4 in)4.9 mm (0.19 in)8 years17 of 100 (Routine)
5 May 2025Red Rock Canyon - Spg Mt Rch S, USdaily rain2.3 mm (0.09 in)2.3 mm (0.09 in)48 years20 of 100 (Routine)
4 May 2025Red Rock Canyon - Spg Mt Rch S, USdaily rain3.6 mm (0.14 in)3.6 mm (0.14 in)48 years20 of 100 (Routine)
15 March 2025Red Rock Canyon - Spg Mt Rch S, USdaily snowfall2.8 cm (1.1 in)0.3 cm (0.1 in)34 years14 of 100 (Routine)
3 August 2024Red Rock Canyon - Spg Mt Rch S, USdaily rain0.5 mm (0.02 in)0.5 mm (0.02 in)47 years18 of 100 (Routine)
19 May 2017Red Rock Canyon - Spg Mt Rch S, USdaily low min5.6 C (42.1 F)1.1 C (2.0 F)26 years13 of 100 (Routine)
5 May 2017Red Rock Canyon - Spg Mt Rch S, USdaily high max (Tie)32.2 C (90.0 F)tie28 years3 of 100 (Routine)
20 March 2017Red Rock Canyon - Spg Mt Rch S, USmonthly high min (Tie)16.7 C (62.1 F)tie0 years3 of 100 (Routine)
20 March 2017Red Rock Canyon - Spg Mt Rch S, USdaily high max (Tie)27.2 C (81.0 F)tie12 years1 of 100 (Routine)
19 March 2017Red Rock Canyon - Spg Mt Rch S, USdaily high min16.1 C (61.0 F)6.1 C (11.0 F)2 years19 of 100 (Routine)
19 March 2017Red Rock Canyon - Spg Mt Rch S, USdaily high max27.8 C (82.0 F)0.6 C (1.1 F)10 years8 of 100 (Routine)
18 March 2017Red Rock Canyon - Spg Mt Rch S, USdaily high min15.6 C (60.1 F)1.2 C (2.2 F)2 years7 of 100 (Routine)
16 March 2017Red Rock Canyon - Spg Mt Rch S, USmonthly high min16.7 C (62.1 F)0.6 C (1.1 F)28 years23 of 100 (Routine)
15 March 2017Red Rock Canyon - Spg Mt Rch S, USdaily high max (Tie)26.7 C (80.1 F)tie4 years1 of 100 (Routine)
14 March 2017Red Rock Canyon - Spg Mt Rch S, USdaily high min (Tie)9.4 C (48.9 F)tie8 years1 of 100 (Routine)
6 March 2017Red Rock Canyon - Spg Mt Rch S, USdaily low min (Tie)-2.2 C (28.0 F)tie11 years1 of 100 (Routine)
21 February 2017Red Rock Canyon - Spg Mt Rch S, USdaily high min (Tie)8.3 C (46.9 F)tie35 years3 of 100 (Routine)
12 February 2017Red Rock Canyon - Spg Mt Rch S, USdaily high min5.6 C (42.1 F)0.6 C (1.1 F)26 years12 of 100 (Routine)
11 February 2017Red Rock Canyon - Spg Mt Rch S, USdaily high min10.0 C (50.0 F)4.4 C (7.9 F)25 years21 of 100 (Routine)

Climate Trend

22 complete years, 1979 to 2008
Annual mean temperature at Red Rock Canyon - Spg Mt Rch S as warming stripes, 1979 to 2008 One stripe for each of 22 complete years at Red Rock Canyon - Spg Mt Rch S, 1979 to 2008. Blue stripes are years cooler than the station's own mean of 16.0 C (60.8 F); red stripes are warmer. The coolest year was 1998, at 14.4 C (57.9 F), and the warmest was 1981, at 18.0 C (64.4 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1979: 16.0 C, 0.0 C from the station mean1981: 18.0 C, +2.0 C from the station mean1982: 15.4 C, -0.6 C from the station mean1983: 15.7 C, -0.3 C from the station mean1984: 15.6 C, -0.4 C from the station mean1987: 15.8 C, -0.2 C from the station mean1988: 16.3 C, +0.3 C from the station mean1989: 16.7 C, +0.7 C from the station mean1990: 16.0 C, 0.0 C from the station mean1991: 15.5 C, -0.5 C from the station mean1992: 15.9 C, -0.1 C from the station mean1993: 15.3 C, -0.7 C from the station mean1994: 16.1 C, +0.1 C from the station mean1996: 17.0 C, +1.0 C from the station mean1997: 16.1 C, +0.1 C from the station mean1998: 14.4 C, -1.6 C from the station mean2001: 16.2 C, +0.2 C from the station mean2003: 16.3 C, +0.3 C from the station mean2004: 15.7 C, -0.3 C from the station mean2006: 15.7 C, -0.3 C from the station mean2007: 16.4 C, +0.4 C from the station mean2008: 15.9 C, -0.1 C from the station mean197919851990199520002005
One stripe for each of 22 complete years at Red Rock Canyon - Spg Mt Rch S, 1979 to 2008. Blue stripes are years cooler than the station's own mean of 16.0 C (60.8 F); red stripes are warmer. The coolest year was 1998, at 14.4 C (57.9 F), and the warmest was 1981, at 18.0 C (64.4 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Red Rock Canyon - Spg Mt Rch S as warming stripes, 1979 to 2008
YearAnnual mean temperatureDifference from the station mean
197916.0 C-0.01 C
198118.0 C+2.01 C
198215.4 C-0.61 C
198315.7 C-0.27 C
198415.6 C-0.38 C
198715.8 C-0.23 C
198816.3 C+0.34 C
198916.7 C+0.67 C
199016.0 C-0.03 C
199115.5 C-0.51 C
199215.9 C-0.06 C
199315.3 C-0.70 C
199416.1 C+0.13 C
199617.0 C+0.98 C
199716.1 C+0.13 C
199814.4 C-1.63 C
200116.2 C+0.19 C
200316.3 C+0.30 C
200415.7 C-0.34 C
200615.7 C-0.34 C
200716.4 C+0.41 C
200815.9 C-0.14 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1977 to 2025
Yearly extremes at Red Rock Canyon - Spg Mt Rch S: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.7 C (116.1 F)198540.6 C (105.1 F)41
Coldest night (TNn)-16.1 C (3.0 F)1990-8.3 C (17.1 F)41
Wettest day (Rx1day)136.7 mm (5.4 in)198638.6 mm (1.5 in)43
Wettest five days (Rx5day)163.8 mm (6.4 in)198352.1 mm (2.1 in)43
Longest dry spell (CDD)281 days198974 days43

Hottest day (TXx)

Hottest day (TXx) at Red Rock Canyon - Spg Mt Rch S by year The hottest day of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 46.7 C (116.1 F) in 1985, marked on the chart; the median year is 40.6 C (105.1 F). 303540455019801990200020102020Record: 46.7 C (116.1 F) in 1985
The hottest day of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 46.7 C (116.1 F) in 1985, marked on the chart; the median year is 40.6 C (105.1 F).
Hottest day (TXx) at Red Rock Canyon - Spg Mt Rch S by year
YearHottest day (TXx)
197745.6 C (114.1 F)
197840.0 C (104.0 F)
197940.6 C (105.1 F)
198041.7 C (107.1 F)
198141.7 C (107.1 F)
198240.0 C (104.0 F)
198340.0 C (104.0 F)
198442.2 C (108.0 F)
198546.7 C (116.1 F)
198641.1 C (106.0 F)
198739.4 C (102.9 F)
198840.6 C (105.1 F)
198942.8 C (109.0 F)
199041.7 C (107.1 F)
199140.0 C (104.0 F)
199238.9 C (102.0 F)
199341.1 C (106.0 F)
199441.7 C (107.1 F)
199539.4 C (102.9 F)
199641.7 C (107.1 F)
199738.9 C (102.0 F)
199842.8 C (109.0 F)
199940.0 C (104.0 F)
200040.6 C (105.1 F)
200141.7 C (107.1 F)
200241.1 C (106.0 F)
200341.1 C (106.0 F)
200440.0 C (104.0 F)
200541.7 C (107.1 F)
200640.6 C (105.1 F)
200742.8 C (109.0 F)
200839.4 C (102.9 F)
200940.6 C (105.1 F)
201040.0 C (104.0 F)
201138.9 C (102.0 F)
201240.0 C (104.0 F)
201340.6 C (105.1 F)
201439.4 C (102.9 F)
201539.4 C (102.9 F)
201641.1 C (106.0 F)
201734.4 C (93.9 F)
2024n/a
2025n/a

Coldest night (TNn)

Coldest night (TNn) at Red Rock Canyon - Spg Mt Rch S by year The coldest night of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is -16.1 C (3.0 F) in 1990, marked on the chart; the median year is -8.3 C (17.1 F). -20-15-10-5019801990200020102020Record: -16.1 C (3.0 F) in 1990
The coldest night of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is -16.1 C (3.0 F) in 1990, marked on the chart; the median year is -8.3 C (17.1 F).
Coldest night (TNn) at Red Rock Canyon - Spg Mt Rch S by year
YearColdest night (TNn)
1977-2.8 C (27.0 F)
1978-4.4 C (24.1 F)
1979-12.2 C (10.0 F)
1980-4.4 C (24.1 F)
1981-3.9 C (25.0 F)
1982-12.2 C (10.0 F)
1983-6.7 C (19.9 F)
1984-9.4 C (15.1 F)
1985-12.8 C (9.0 F)
1986-8.3 C (17.1 F)
1987-10.0 C (14.0 F)
1988-15.0 C (5.0 F)
1989-12.2 C (10.0 F)
1990-16.1 C (3.0 F)
1991-6.7 C (19.9 F)
1992-8.3 C (17.1 F)
1993-8.9 C (16.0 F)
1994-8.9 C (16.0 F)
1995-7.2 C (19.0 F)
1996-8.3 C (17.1 F)
1997-7.8 C (18.0 F)
1998-11.7 C (10.9 F)
1999-7.2 C (19.0 F)
2000-7.2 C (19.0 F)
2001-7.2 C (19.0 F)
2002-9.4 C (15.1 F)
2003-7.8 C (18.0 F)
2004-8.3 C (17.1 F)
2005-7.2 C (19.0 F)
2006-9.4 C (15.1 F)
2007-12.8 C (9.0 F)
2008-8.9 C (16.0 F)
2009-7.8 C (18.0 F)
2010-8.3 C (17.1 F)
2011-9.4 C (15.1 F)
2012-6.7 C (19.9 F)
2013-11.1 C (12.0 F)
2014-5.6 C (21.9 F)
2015-8.3 C (17.1 F)
2016-6.7 C (19.9 F)
2017-6.1 C (21.0 F)
2024n/a
2025n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Red Rock Canyon - Spg Mt Rch S by year The wettest day of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 136.7 mm (5.4 in) in 1986, marked on the chart; the median year is 38.6 mm (1.5 in). 05010015019801990200020102020Record: 136.7 mm (5.4 in) in 1986
The wettest day of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 136.7 mm (5.4 in) in 1986, marked on the chart; the median year is 38.6 mm (1.5 in).
Wettest day (Rx1day) at Red Rock Canyon - Spg Mt Rch S by year
YearWettest day (Rx1day)
197744.7 mm (1.8 in)
197843.2 mm (1.7 in)
197934.8 mm (1.4 in)
198049.8 mm (2.0 in)
198126.7 mm (1.1 in)
198239.4 mm (1.6 in)
198392.7 mm (3.6 in)
198461.0 mm (2.4 in)
198554.1 mm (2.1 in)
1986136.7 mm (5.4 in)
198724.1 mm (0.9 in)
198820.6 mm (0.8 in)
198923.1 mm (0.9 in)
199030.5 mm (1.2 in)
199130.5 mm (1.2 in)
199276.2 mm (3.0 in)
199333.8 mm (1.3 in)
199416.5 mm (0.6 in)
199538.1 mm (1.5 in)
199650.8 mm (2.0 in)
199730.5 mm (1.2 in)
199866.0 mm (2.6 in)
199939.4 mm (1.6 in)
200048.3 mm (1.9 in)
200129.7 mm (1.2 in)
200241.9 mm (1.6 in)
200336.8 mm (1.4 in)
200449.5 mm (1.9 in)
200543.7 mm (1.7 in)
200638.6 mm (1.5 in)
200740.1 mm (1.6 in)
200839.4 mm (1.6 in)
200919.1 mm (0.8 in)
201038.9 mm (1.5 in)
201143.9 mm (1.7 in)
201230.7 mm (1.2 in)
201325.7 mm (1.0 in)
201439.4 mm (1.6 in)
201521.6 mm (0.9 in)
201623.4 mm (0.9 in)
201731.8 mm (1.3 in)
20242.5 mm (0.10 in)
202517.3 mm (0.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Red Rock Canyon - Spg Mt Rch S by year The wettest five days of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 163.8 mm (6.4 in) in 1983, marked on the chart; the median year is 52.1 mm (2.1 in). 05010015020019801990200020102020Record: 163.8 mm (6.4 in) in 1983
The wettest five days of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 163.8 mm (6.4 in) in 1983, marked on the chart; the median year is 52.1 mm (2.1 in).
Wettest five days (Rx5day) at Red Rock Canyon - Spg Mt Rch S by year
YearWettest five days (Rx5day)
197746.3 mm (1.8 in)
197886.4 mm (3.4 in)
197941.9 mm (1.6 in)
198079.9 mm (3.1 in)
198161.5 mm (2.4 in)
198256.2 mm (2.2 in)
1983163.8 mm (6.4 in)
198467.3 mm (2.6 in)
198563.5 mm (2.5 in)
1986157.8 mm (6.2 in)
198746.5 mm (1.8 in)
198841.9 mm (1.6 in)
198924.4 mm (1.0 in)
199048.3 mm (1.9 in)
199152.1 mm (2.1 in)
199282.3 mm (3.2 in)
199381.8 mm (3.2 in)
199427.9 mm (1.1 in)
199574.6 mm (2.9 in)
1996102.1 mm (4.0 in)
199758.4 mm (2.3 in)
199889.9 mm (3.5 in)
199947.3 mm (1.9 in)
200069.6 mm (2.7 in)
200164.7 mm (2.5 in)
200241.9 mm (1.6 in)
200346.1 mm (1.8 in)
200461.7 mm (2.4 in)
2005101.7 mm (4.0 in)
200638.6 mm (1.5 in)
200758.1 mm (2.3 in)
200846.0 mm (1.8 in)
200934.3 mm (1.4 in)
201060.2 mm (2.4 in)
201144.7 mm (1.8 in)
201247.4 mm (1.9 in)
201347.5 mm (1.9 in)
201439.4 mm (1.6 in)
201530.0 mm (1.2 in)
201638.2 mm (1.5 in)
201786.2 mm (3.4 in)
20244.5 mm (0.18 in)
202521.9 mm (0.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Red Rock Canyon - Spg Mt Rch S by year The longest dry spell of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 281 days in 1989, marked on the chart; the median year is 74 days. 010020030019801990200020102020Record: 281 days in 1989
The longest dry spell of the year at Red Rock Canyon - Spg Mt Rch S, 1977 to 2025. The record is 281 days in 1989, marked on the chart; the median year is 74 days.
Longest dry spell (CDD) at Red Rock Canyon - Spg Mt Rch S by year
YearLongest dry spell (CDD)
197741 days
197887 days
197991 days
1980112 days
198174 days
198282 days
198389 days
198497 days
198557 days
1986111 days
198746 days
198874 days
1989281 days
199059 days
199168 days
1992101 days
199364 days
199469 days
1995111 days
1996156 days
1997106 days
199841 days
1999100 days
200044 days
200174 days
200280 days
200365 days
200447 days
200578 days
200661 days
200798 days
200868 days
200993 days
201066 days
201123 days
201265 days
201380 days
201469 days
201563 days
201634 days
2017104 days
2024164 days
202546 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.

Frost Dates and Growing Season

22 years with a frost

Across 22 years with a frost, the median last spring frost at Red Rock Canyon - Spg Mt Rch S falls on 27 March and the median first autumn frost on 4 November, which leaves a median of 222 days between them.

Frost dates and growing season at Red Rock Canyon - Spg Mt Rch S
MeasureMedian, all yearsEarliest periodRecent period (1979 to 2008)Recent against earliestFitted trend
Last spring frost27 Marchn/a27 Marchn/an/a
First autumn frost4 Novembern/a4 Novembern/an/a
Growing days222 daysn/a222 daysn/an/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

32 years, 1978 to 2015

A day with at least 36.5 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 136.7 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Red Rock Canyon - Spg Mt Rch S: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years36.5 mm (1.4 in)
5 years54.0 mm (2.1 in)
10 years68.7 mm (2.7 in)
25 years91.5 mm (3.6 in)
50 years112.2 mm (4.4 in)Longer than the 32 years of record
100 years136.7 mm (5.4 in)Longer than the 32 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, 32 years of values from 1978 to 2015.

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: 136.7 mm (5.4 in) in 1986; 92.7 mm (3.6 in) in 1983; 76.2 mm (3.0 in) in 1992.

Download the Data

  • Data for Red Rock Canyon - Spg Mt Rch S standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Red Rock Canyon - Spg Mt Rch S 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).