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Mtn Pass Weather Records (USC00045890)

Record envelope, standing records and threshold days for Mtn Pass (USC00045890), California, United States, with 53 years of record.

Key Facts for Mtn Pass

  • Mtn Pass (USC00045890) is a weather station in California, United States at 35.47 latitude and -115.54 longitude, 1,442 m (4,730 ft) above sea level.
  • The station reports from 1955 to 2007, 53 years of record.
  • 1,464 records set at Mtn Pass still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Mtn Pass tied a monthly record high maximum temperature of 32.2 C (90.0 F) on 29 April 2007.

About the Station

  • Location: California, United States, 35.47 latitude, -115.54 longitude.
  • Elevation: 1,442 m (4,730 ft).
  • Period of record: 1955 to 2007, 53 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 Mtn Pass, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mtn Pass. 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 Mtn Pass. 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 Mtn Pass, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan22.2 C (72.0 F)-16.7 C (1.9 F)n/an/a
Feb26.1 C (79.0 F)-15.6 C (3.9 F)n/an/a
Mar31.1 C (88.0 F)-11.1 C (12.0 F)n/an/a
Apr32.2 C (90.0 F)-7.2 C (19.0 F)n/an/a
May39.4 C (102.9 F)-6.7 C (19.9 F)n/an/a
Jun42.8 C (109.0 F)-7.8 C (18.0 F)n/an/a
Jul43.3 C (109.9 F)7.8 C (46.0 F)n/an/a
Aug42.8 C (109.0 F)6.7 C (44.1 F)n/an/a
Sep38.9 C (102.0 F)0.6 C (33.1 F)n/an/a
Oct35.6 C (96.1 F)-6.7 C (19.9 F)n/an/a
Nov31.7 C (89.1 F)-13.3 C (8.1 F)n/an/a
Dec21.1 C (70.0 F)-18.9 C (-2.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Mtn Pass by the year they were set 1,464 records at Mtn Pass still stand. 1967 holds the most, with 137. 0501001501955: 411956: 311957: 341958: 221959: 211960: 201961: 271962: 431963: 371964: 281965: 161966: 351967: 1371968: 501969: 341970: 191971: 491972: 501973: 401974: 401975: 691976: 331977: 271978: 181979: 251980: 301981: 211982: 161983: 121984: 171985: 411986: 341987: 121988: 161989: 411990: 151991: 151992: 181993: 61994: 201995: 211996: 381997: 231998: 211999: 142000: 152001: 62002: 132003: 202004: 172005: 52006: 82007: 3195519611967197319791985199119972003
1,464 records at Mtn Pass still stand. 1967 holds the most, with 137.
Standing records at Mtn Pass by the year they were set
Year setStanding records
195541
195631
195734
195822
195921
196020
196127
196243
196337
196428
196516
196635
1967137
196850
196934
197019
197149
197250
197340
197440
197569
197633
197727
197818
197925
198030
198121
198216
198312
198417
198541
198634
198712
198816
198941
199015
199115
199218
19936
199420
199521
199638
199723
199821
199914
200015
20016
200213
200320
200417
20055
20068
20073

All-Time Record Progression

2 new records
When Mtn Pass set new all-time records 2 all-time records were set at Mtn Pass between 18 January 1990 and 5 August 1992. Each dot is a new record. Record snow depthRecord daily precipitation18 January 1990: Record snow depth 35.6 cm (14.0 in)5 August 1992: Record daily precipitation 89.7 mm (3.5 in)1990
2 all-time records were set at Mtn Pass between 18 January 1990 and 5 August 1992. Each dot is a new record.
When Mtn Pass set new all-time records
DateKindDetail
1990-01-18Record snow depthRecord snow depth 35.6 cm (14.0 in)
1992-08-05Record daily precipitationRecord daily precipitation 89.7 mm (3.5 in)

Wettest Day of Each Month

Aug: 89.7 mm (3.5 in)
Record daily precipitation for each month at Mtn Pass The wettest day on record for each calendar month at Mtn Pass. The most was 89.7 mm (3.5 in) on 5 August 1992. 0255075100 Jan: 38.1 mm (1.5 in), 21 January 1982 Jan Feb: 44.7 mm (1.8 in), 10 February 1963 Feb Mar: 40.1 mm (1.6 in), 25 March 1998 Mar Apr: 27.7 mm (1.1 in), 15 April 2003 Apr May: 19.6 mm (0.8 in), 9 May 1977 May Jun: 19.1 mm (0.8 in), 7 June 1972 Jun Jul: 74.9 mm (2.9 in), 31 July 1980 Jul Aug: 89.7 mm (3.5 in), 5 August 1992 Aug Sep: 49.0 mm (1.9 in), 8 September 1958 Sep Oct: 52.6 mm (2.1 in), 26 October 1974 Oct Nov: 38.1 mm (1.5 in), 30 November 1982 Nov Dec: 43.2 mm (1.7 in), 29 December 2004 Dec
The wettest day on record for each calendar month at Mtn Pass. The most was 89.7 mm (3.5 in) on 5 August 1992.
Record daily precipitation for each month at Mtn Pass
MonthRecord daily precipitation (mm)Date
Jan38.1 mm (1.5 in)21 January 1982
Feb44.7 mm (1.8 in)10 February 1963
Mar40.1 mm (1.6 in)25 March 1998
Apr27.7 mm (1.1 in)15 April 2003
May19.6 mm (0.8 in)9 May 1977
Jun19.1 mm (0.8 in)7 June 1972
Jul74.9 mm (2.9 in)31 July 1980
Aug89.7 mm (3.5 in)5 August 1992
Sep49.0 mm (1.9 in)8 September 1958
Oct52.6 mm (2.1 in)26 October 1974
Nov38.1 mm (1.5 in)30 November 1982
Dec43.2 mm (1.7 in)29 December 2004

Period of Record Coverage

1955 to 2007
Days with data per year at Mtn Pass 53 years of record at Mtn Pass, 1955 to 2007. 34 years have data for under 90 percent of days and are left out of rankings: 1955, 1960, 1961, 1962, 1965, 1966, 1972, 1973 and others. 1955: 306 of 365 days1956: 364 of 366 days1957: 354 of 365 days1958: 349 of 365 days1959: 351 of 365 days1960: 215 of 366 days1961: 242 of 365 days1962: 246 of 365 days1963: 353 of 365 days1964: 332 of 366 days1965: 268 of 365 days1966: 207 of 365 days1967: 350 of 365 days1968: 356 of 366 days1969: 361 of 365 days1970: 364 of 365 days1971: 365 of 365 days1972: 276 of 366 days1973: 305 of 365 days1974: 363 of 365 days1975: 297 of 365 days1976: 341 of 366 days1977: 358 of 365 days1978: 345 of 365 days1979: 327 of 365 days1980: 357 of 366 days1981: 235 of 365 days1982: 225 of 365 days1983: 199 of 365 days1984: 355 of 366 days1985: 305 of 365 days1986: 262 of 365 days1987: 238 of 365 days1988: 238 of 366 days1989: 244 of 365 days1990: 249 of 365 days1991: 250 of 365 days1992: 244 of 366 days1993: 245 of 365 days1994: 252 of 365 days1995: 248 of 365 days1996: 242 of 366 days1997: 208 of 365 days1998: 231 of 365 days1999: 220 of 365 days2000: 199 of 366 days2001: 211 of 365 days2002: 218 of 365 days2003: 328 of 365 days2004: 366 of 366 days2005: 356 of 365 days2006: 211 of 365 days2007: 56 of 365 days19601970198019902000
53 years of record at Mtn Pass, 1955 to 2007. 34 years have data for under 90 percent of days and are left out of rankings: 1955, 1960, 1961, 1962, 1965, 1966, 1972, 1973 and others.
Days with data per year at Mtn Pass
YearDays with dataShare of yearComplete
195530684%No
195636499%Yes
195735497%Yes
195834996%Yes
195935196%Yes
196021559%No
196124266%No
196224667%No
196335397%Yes
196433291%Yes
196526873%No
196620757%No
196735096%Yes
196835697%Yes
196936199%Yes
1970364100%Yes
1971365100%Yes
197227675%No
197330584%No
197436399%Yes
197529781%No
197634193%Yes
197735898%Yes
197834595%Yes
197932790%No
198035798%Yes
198123564%No
198222562%No
198319955%No
198435597%Yes
198530584%No
198626272%No
198723865%No
198823865%No
198924467%No
199024968%No
199125068%No
199224467%No
199324567%No
199425269%No
199524868%No
199624266%No
199720857%No
199823163%No
199922060%No
200019954%No
200121158%No
200221860%No
200332890%No
2004366100%Yes
200535698%Yes
200621158%No
20075615%No

Latest Records

20
Latest records at Mtn Pass
DateStationRecordValueBeat old record byOld record stoodSignificance
29 April 2007Mtn Pass, USmonthly high max (Tie)32.2 C (90.0 F)tie18 years5 of 100 (Routine)
17 April 2007Mtn Pass, USdaily rain4.6 mm (0.18 in)1.0 mm (0.04 in)16 years11 of 100 (Routine)
9 April 2007Mtn Pass, USdaily high max (Tie)27.8 C (82.0 F)tie21 years2 of 100 (Routine)
25 January 2007Mtn Pass, USdaily high max20.6 C (69.1 F)1.7 C (3.1 F)24 years15 of 100 (Routine)
24 January 2007Mtn Pass, USdaily high max18.9 C (66.0 F)0.6 C (1.1 F)36 years17 of 100 (Routine)
18 December 2006Mtn Pass, USdaily snowfall6.4 cm (2.5 in)6.4 cm (2.5 in)51 years32 of 100 (Routine)
14 December 2006Mtn Pass, USmonthly high max (Tie)21.1 C (70.0 F)tie48 years7 of 100 (Routine)
10 December 2006Mtn Pass, USdaily high max (Tie)20.6 C (69.1 F)tie24 years3 of 100 (Routine)
6 December 2006Mtn Pass, USmonthly high max (Tie)21.1 C (70.0 F)tie48 years7 of 100 (Routine)
1 December 2006Mtn Pass, USdaily low max1.7 C (35.1 F)2.2 C (4.0 F)24 years16 of 100 (Routine)
12 November 2006Mtn Pass, USdaily high max (Tie)24.4 C (75.9 F)tie9 years1 of 100 (Routine)
8 November 2006Mtn Pass, USdaily high max24.4 C (75.9 F)0.5 C (0.9 F)29 years13 of 100 (Routine)
7 November 2006Mtn Pass, USdaily high min11.1 C (52.0 F)0.5 C (0.9 F)15 years10 of 100 (Routine)
20 October 2006Mtn Pass, USdaily low min-0.6 C (30.9 F)3.9 C (7.0 F)35 years24 of 100 (Routine)
14 October 2006Mtn Pass, USdaily rain41.1 mm (1.6 in)37.3 mm (1.5 in)48 years59 of 100 (Notable)
19 May 2006Mtn Pass, USdaily rain1.8 mm (0.07 in)1.8 mm (0.07 in)51 years20 of 100 (Routine)
16 May 2006Mtn Pass, USdaily high max32.2 C (90.0 F)0.5 C (0.9 F)17 years10 of 100 (Routine)
15 May 2006Mtn Pass, USdaily high max31.7 C (89.1 F)0.6 C (1.1 F)8 years8 of 100 (Routine)
14 May 2006Mtn Pass, USdaily high max (Tie)31.7 C (89.1 F)tie29 years3 of 100 (Routine)
6 April 2006Mtn Pass, USdaily low max5.6 C (42.1 F)1.6 C (2.9 F)8 years9 of 100 (Routine)

Climate Trend

13 complete years, 1956 to 2005
Annual mean temperature at Mtn Pass as warming stripes, 1956 to 2005 One stripe for each of 13 complete years at Mtn Pass, 1956 to 2005. Blue stripes are years cooler than the station's own mean of 14.3 C (57.7 F); red stripes are warmer. The coolest year was 1974, at 13.0 C (55.4 F), and the warmest was 1969, at 15.5 C (59.9 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1956: 14.5 C, +0.2 C from the station mean1957: 14.0 C, -0.2 C from the station mean1968: 13.8 C, -0.5 C from the station mean1969: 15.5 C, +1.3 C from the station mean1970: 14.7 C, +0.5 C from the station mean1971: 13.9 C, -0.4 C from the station mean1974: 13.0 C, -1.3 C from the station mean1977: 14.7 C, +0.5 C from the station mean1978: 14.3 C, 0.0 C from the station mean1980: 14.6 C, +0.3 C from the station mean1984: 14.3 C, 0.0 C from the station mean2004: 14.3 C, 0.0 C from the station mean2005: 13.9 C, -0.3 C from the station mean19561960196519701975198019851990199520002005
One stripe for each of 13 complete years at Mtn Pass, 1956 to 2005. Blue stripes are years cooler than the station's own mean of 14.3 C (57.7 F); red stripes are warmer. The coolest year was 1974, at 13.0 C (55.4 F), and the warmest was 1969, at 15.5 C (59.9 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Mtn Pass as warming stripes, 1956 to 2005
YearAnnual mean temperatureDifference from the station mean
195614.5 C+0.21 C
195714.0 C-0.25 C
196813.8 C-0.50 C
196915.5 C+1.25 C
197014.7 C+0.46 C
197113.9 C-0.39 C
197413.0 C-1.27 C
197714.7 C+0.47 C
197814.3 C+0.00 C
198014.6 C+0.32 C
198414.3 C+0.00 C
200414.3 C+0.00 C
200513.9 C-0.33 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

1955 to 2007
Yearly extremes at Mtn Pass: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.3 C (109.9 F)196738.3 C (100.9 F)53
Coldest night (TNn)-18.9 C (-2.0 F)1972-10.6 C (12.9 F)53
Wettest day (Rx1day)89.7 mm (3.5 in)199227.9 mm (1.1 in)53
Wettest five days (Rx5day)105.4 mm (4.1 in)199945.0 mm (1.8 in)53
Longest dry spell (CDD)205 days196880 days53

Hottest day (TXx)

Hottest day (TXx) at Mtn Pass by year The hottest day of the year at Mtn Pass, 1955 to 2007. The record is 43.3 C (109.9 F) in 1967, marked on the chart; the median year is 38.3 C (100.9 F). 3035404519601970198019902000Record: 43.3 C (109.9 F) in 1967
The hottest day of the year at Mtn Pass, 1955 to 2007. The record is 43.3 C (109.9 F) in 1967, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Mtn Pass by year
YearHottest day (TXx)
195537.8 C (100.0 F)
195638.9 C (102.0 F)
195738.9 C (102.0 F)
195840.6 C (105.1 F)
195938.3 C (100.9 F)
196033.9 C (93.0 F)
196135.0 C (95.0 F)
196238.3 C (100.9 F)
196336.1 C (97.0 F)
196438.3 C (100.9 F)
196537.2 C (99.0 F)
196635.6 C (96.1 F)
196743.3 C (109.9 F)
196842.8 C (109.0 F)
196937.2 C (99.0 F)
197038.9 C (102.0 F)
197137.2 C (99.0 F)
197238.9 C (102.0 F)
197341.7 C (107.1 F)
197438.3 C (100.9 F)
197536.7 C (98.1 F)
197637.2 C (99.0 F)
197739.4 C (102.9 F)
197838.9 C (102.0 F)
197939.4 C (102.9 F)
198038.3 C (100.9 F)
198131.7 C (89.1 F)
198237.8 C (100.0 F)
198336.7 C (98.1 F)
198440.0 C (104.0 F)
198540.6 C (105.1 F)
198637.8 C (100.0 F)
198737.8 C (100.0 F)
198840.0 C (104.0 F)
198940.6 C (105.1 F)
199037.8 C (100.0 F)
199140.0 C (104.0 F)
199237.2 C (99.0 F)
199340.6 C (105.1 F)
199440.0 C (104.0 F)
199539.4 C (102.9 F)
199641.1 C (106.0 F)
199738.3 C (100.9 F)
199842.2 C (108.0 F)
199937.8 C (100.0 F)
200037.8 C (100.0 F)
200138.3 C (100.9 F)
200239.4 C (102.9 F)
200338.9 C (102.0 F)
200436.7 C (98.1 F)
200539.4 C (102.9 F)
200633.3 C (91.9 F)
200732.2 C (90.0 F)

Coldest night (TNn)

Coldest night (TNn) at Mtn Pass by year The coldest night of the year at Mtn Pass, 1955 to 2007. The record is -18.9 C (-2.0 F) in 1972, marked on the chart; the median year is -10.6 C (12.9 F). -20-15-10-519601970198019902000Record: -18.9 C (-2.0 F) in 1972
The coldest night of the year at Mtn Pass, 1955 to 2007. The record is -18.9 C (-2.0 F) in 1972, marked on the chart; the median year is -10.6 C (12.9 F).
Coldest night (TNn) at Mtn Pass by year
YearColdest night (TNn)
1955-10.6 C (12.9 F)
1956-11.1 C (12.0 F)
1957-10.6 C (12.9 F)
1958-10.0 C (14.0 F)
1959-7.8 C (18.0 F)
1960-13.9 C (7.0 F)
1961-11.1 C (12.0 F)
1962-11.7 C (10.9 F)
1963-15.6 C (3.9 F)
1964-7.8 C (18.0 F)
1965-10.0 C (14.0 F)
1966-12.2 C (10.0 F)
1967-13.3 C (8.1 F)
1968-10.0 C (14.0 F)
1969-8.9 C (16.0 F)
1970-7.2 C (19.0 F)
1971-12.2 C (10.0 F)
1972-18.9 C (-2.0 F)
1973-8.9 C (16.0 F)
1974-16.1 C (3.0 F)
1975-13.9 C (7.0 F)
1976-11.1 C (12.0 F)
1977-7.2 C (19.0 F)
1978-13.3 C (8.1 F)
1979-12.8 C (9.0 F)
1980-5.6 C (21.9 F)
1981-6.7 C (19.9 F)
1982-11.1 C (12.0 F)
1983-13.3 C (8.1 F)
1984-10.0 C (14.0 F)
1985-14.4 C (6.1 F)
1986-9.4 C (15.1 F)
1987-11.1 C (12.0 F)
1988-12.8 C (9.0 F)
1989-15.6 C (3.9 F)
1990-16.1 C (3.0 F)
1991-7.2 C (19.0 F)
1992-8.3 C (17.1 F)
1993-10.0 C (14.0 F)
1994-12.8 C (9.0 F)
1995-5.6 C (21.9 F)
1996-15.0 C (5.0 F)
1997-16.7 C (1.9 F)
1998-8.9 C (16.0 F)
1999-5.6 C (21.9 F)
2000-5.6 C (21.9 F)
2001-9.4 C (15.1 F)
2002-8.9 C (16.0 F)
2003-6.1 C (21.0 F)
2004-8.3 C (17.1 F)
2005-5.0 C (23.0 F)
2006-7.2 C (19.0 F)
2007-11.1 C (12.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Mtn Pass by year The wettest day of the year at Mtn Pass, 1955 to 2007. The record is 89.7 mm (3.5 in) in 1992, marked on the chart; the median year is 27.9 mm (1.1 in). 025507510019601970198019902000Record: 89.7 mm (3.5 in) in 1992
The wettest day of the year at Mtn Pass, 1955 to 2007. The record is 89.7 mm (3.5 in) in 1992, marked on the chart; the median year is 27.9 mm (1.1 in).
Wettest day (Rx1day) at Mtn Pass by year
YearWettest day (Rx1day)
195543.7 mm (1.7 in)
195614.7 mm (0.6 in)
195725.1 mm (1.0 in)
195849.0 mm (1.9 in)
195927.9 mm (1.1 in)
196022.9 mm (0.9 in)
196119.1 mm (0.8 in)
196212.7 mm (0.5 in)
196344.7 mm (1.8 in)
196425.4 mm (1.0 in)
196519.1 mm (0.8 in)
196621.3 mm (0.8 in)
196721.6 mm (0.9 in)
196827.9 mm (1.1 in)
196936.8 mm (1.4 in)
197039.4 mm (1.6 in)
197114.2 mm (0.6 in)
197227.9 mm (1.1 in)
197317.3 mm (0.7 in)
197452.6 mm (2.1 in)
197516.5 mm (0.6 in)
197622.9 mm (0.9 in)
197733.0 mm (1.3 in)
197825.4 mm (1.0 in)
197948.5 mm (1.9 in)
198074.9 mm (2.9 in)
198118.3 mm (0.7 in)
198238.1 mm (1.5 in)
198336.3 mm (1.4 in)
198464.8 mm (2.6 in)
198517.3 mm (0.7 in)
198612.7 mm (0.5 in)
198726.7 mm (1.1 in)
198819.6 mm (0.8 in)
198919.1 mm (0.8 in)
199048.0 mm (1.9 in)
199150.8 mm (2.0 in)
199289.7 mm (3.5 in)
199327.9 mm (1.1 in)
199417.5 mm (0.7 in)
199520.1 mm (0.8 in)
199624.4 mm (1.0 in)
199725.4 mm (1.0 in)
199840.1 mm (1.6 in)
199962.2 mm (2.4 in)
200037.3 mm (1.5 in)
200163.2 mm (2.5 in)
200218.3 mm (0.7 in)
200328.4 mm (1.1 in)
200443.2 mm (1.7 in)
200534.0 mm (1.3 in)
200641.1 mm (1.6 in)
20074.6 mm (0.18 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mtn Pass by year The wettest five days of the year at Mtn Pass, 1955 to 2007. The record is 105.4 mm (4.1 in) in 1999, marked on the chart; the median year is 45.0 mm (1.8 in). 05010015019601970198019902000Record: 105.4 mm (4.1 in) in 1999
The wettest five days of the year at Mtn Pass, 1955 to 2007. The record is 105.4 mm (4.1 in) in 1999, marked on the chart; the median year is 45.0 mm (1.8 in).
Wettest five days (Rx5day) at Mtn Pass by year
YearWettest five days (Rx5day)
195564.8 mm (2.6 in)
195620.0 mm (0.8 in)
195745.5 mm (1.8 in)
195853.6 mm (2.1 in)
195946.5 mm (1.8 in)
196028.0 mm (1.1 in)
196129.3 mm (1.2 in)
196221.6 mm (0.9 in)
196363.8 mm (2.5 in)
196450.8 mm (2.0 in)
196545.2 mm (1.8 in)
196659.6 mm (2.3 in)
196742.7 mm (1.7 in)
196860.9 mm (2.4 in)
196939.4 mm (1.6 in)
197040.9 mm (1.6 in)
197119.5 mm (0.8 in)
197237.5 mm (1.5 in)
197332.0 mm (1.3 in)
197486.0 mm (3.4 in)
197549.7 mm (2.0 in)
197645.0 mm (1.8 in)
197758.1 mm (2.3 in)
197841.9 mm (1.6 in)
197950.0 mm (2.0 in)
198075.2 mm (3.0 in)
198130.8 mm (1.2 in)
198249.9 mm (2.0 in)
198367.3 mm (2.6 in)
198488.9 mm (3.5 in)
198529.5 mm (1.2 in)
198625.0 mm (1.0 in)
198726.7 mm (1.1 in)
198844.7 mm (1.8 in)
198926.7 mm (1.1 in)
199057.4 mm (2.3 in)
199187.4 mm (3.4 in)
199289.7 mm (3.5 in)
199338.6 mm (1.5 in)
199417.5 mm (0.7 in)
199531.7 mm (1.2 in)
199624.4 mm (1.0 in)
199741.4 mm (1.6 in)
199845.7 mm (1.8 in)
1999105.4 mm (4.1 in)
200066.3 mm (2.6 in)
200163.2 mm (2.5 in)
200218.3 mm (0.7 in)
200332.0 mm (1.3 in)
200468.6 mm (2.7 in)
200563.2 mm (2.5 in)
200641.1 mm (1.6 in)
20074.6 mm (0.18 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mtn Pass by year The longest dry spell of the year at Mtn Pass, 1955 to 2007. The record is 205 days in 1968, marked on the chart; the median year is 80 days. 05010015020025019601970198019902000Record: 205 days in 1968
The longest dry spell of the year at Mtn Pass, 1955 to 2007. The record is 205 days in 1968, marked on the chart; the median year is 80 days.
Longest dry spell (CDD) at Mtn Pass by year
YearLongest dry spell (CDD)
195584 days
195694 days
195750 days
195878 days
195965 days
196056 days
196172 days
196271 days
196354 days
196482 days
196551 days
196697 days
196785 days
1968205 days
196963 days
1970121 days
197151 days
1972103 days
197387 days
1974103 days
1975130 days
197690 days
197763 days
197885 days
1979110 days
198066 days
198161 days
198223 days
198340 days
198497 days
198590 days
198644 days
198757 days
1988105 days
198968 days
199058 days
199164 days
199237 days
199380 days
199448 days
199598 days
199671 days
1997140 days
199843 days
199999 days
2000104 days
200182 days
2002106 days
200381 days
200488 days
200583 days
200664 days
200759 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

38 years, 1956 to 2005

A day with at least 29.8 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 108.5 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Mtn Pass: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years29.8 mm (1.2 in)
5 years45.9 mm (1.8 in)
10 years58.3 mm (2.3 in)
25 years76.3 mm (3.0 in)
50 years91.6 mm (3.6 in)Longer than the 38 years of record
100 years108.5 mm (4.3 in)Longer than the 38 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, 38 years of values from 1956 to 2005.

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: 89.7 mm (3.5 in) in 1992; 74.9 mm (2.9 in) in 1980; 64.8 mm (2.6 in) in 1984.

Download the Data

  • Data for Mtn Pass standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mtn Pass 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 . Last revised (2025-12-31).