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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Mercey Hot Springs Weather Records (USC00045550)

Record envelope, standing records and threshold days for Mercey Hot Springs (USC00045550), California, United States, with 36 years of record.

Key Facts for Mercey Hot Springs

  • Mercey Hot Springs (USC00045550) is a weather station in California, United States at 36.70 latitude and -120.87 longitude, 357 m (1,171 ft) above sea level.
  • The station reports from 1932 to 1967, 36 years of record.
  • 1,464 records set at Mercey Hot Springs still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: California, United States, 36.70 latitude, -120.87 longitude.
  • Elevation: 357 m (1,171 ft).
  • Period of record: 1932 to 1967, 36 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Mercey Hot Springs, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mercey Hot Springs. 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 Mercey Hot Springs. 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 Mercey Hot Springs, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan24.4 C (75.9 F)-8.9 C (16.0 F)n/an/a
Feb24.4 C (75.9 F)-5.0 C (23.0 F)n/an/a
Mar28.3 C (82.9 F)-2.8 C (27.0 F)n/an/a
Apr33.3 C (91.9 F)-1.1 C (30.0 F)n/an/a
May37.8 C (100.0 F)0.0 C (32.0 F)n/an/a
Jun42.2 C (108.0 F)5.6 C (42.1 F)n/an/a
Jul45.0 C (113.0 F)7.8 C (46.0 F)n/an/a
Aug45.0 C (113.0 F)8.3 C (46.9 F)n/an/a
Sep40.0 C (104.0 F)5.6 C (42.1 F)n/an/a
Oct37.2 C (99.0 F)0.6 C (33.1 F)n/an/a
Nov27.2 C (81.0 F)-6.7 C (19.9 F)n/an/a
Dec24.4 C (75.9 F)-7.8 C (18.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Mercey Hot Springs by the year they were set 1,464 records at Mercey Hot Springs still stand. 1933 holds the most, with 187. 0501001502001932: 481933: 1871934: 1361935: 1461936: 1361937: 1171938: 1371939: 1511940: 1171941: 1191942: 1031943: 67193219341936193819401942
1,464 records at Mercey Hot Springs still stand. 1933 holds the most, with 187.
Standing records at Mercey Hot Springs by the year they were set
Year setStanding records
193248
1933187
1934136
1935146
1936136
1937117
1938137
1939151
1940117
1941119
1942103
194367

Wettest Day of Each Month

Jan: 57.9 mm (2.3 in)
Record daily precipitation for each month at Mercey Hot Springs The wettest day on record for each calendar month at Mercey Hot Springs. The most was 57.9 mm (2.3 in) on 10 January 1956. 0204060 Jan: 57.9 mm (2.3 in), 10 January 1956 Jan Feb: 34.5 mm (1.4 in), 9 February 1962 Feb Mar: 47.0 mm (1.9 in), 16 March 1958 Mar Apr: 23.6 mm (0.9 in), 1 April 1965 Apr May: 12.7 mm (0.5 in), 10 May 1939 May Jun: 8.4 mm (0.33 in), 5 June 1934 Jun Jul: 5.3 mm (0.21 in), 23 July 1966 Jul Aug: 4.8 mm (0.19 in), 31 August 1964 Aug Sep: 43.2 mm (1.7 in), 25 September 1939 Sep Oct: 16.5 mm (0.6 in), 21 October 1941 Oct Nov: 25.4 mm (1.0 in), 18 November 1967 Nov Dec: 35.1 mm (1.4 in), 23 December 1940 Dec
The wettest day on record for each calendar month at Mercey Hot Springs. The most was 57.9 mm (2.3 in) on 10 January 1956.
Record daily precipitation for each month at Mercey Hot Springs
MonthRecord daily precipitation (mm)Date
Jan57.9 mm (2.3 in)10 January 1956
Feb34.5 mm (1.4 in)9 February 1962
Mar47.0 mm (1.9 in)16 March 1958
Apr23.6 mm (0.9 in)1 April 1965
May12.7 mm (0.5 in)10 May 1939
Jun8.4 mm (0.33 in)5 June 1934
Jul5.3 mm (0.21 in)23 July 1966
Aug4.8 mm (0.19 in)31 August 1964
Sep43.2 mm (1.7 in)25 September 1939
Oct16.5 mm (0.6 in)21 October 1941
Nov25.4 mm (1.0 in)18 November 1967
Dec35.1 mm (1.4 in)23 December 1940

Period of Record Coverage

1932 to 1943
Days with data per year at Mercey Hot Springs 12 years of record at Mercey Hot Springs, 1932 to 1943. 4 years have data for under 90 percent of days and are left out of rankings: 1932, 1937, 1940, 1943. 1932: 80 of 366 days1933: 364 of 365 days1934: 365 of 365 days1935: 365 of 365 days1936: 364 of 366 days1937: 324 of 365 days1938: 351 of 365 days1939: 350 of 365 days1940: 293 of 366 days1941: 365 of 365 days1942: 358 of 365 days1943: 300 of 365 days19351940
12 years of record at Mercey Hot Springs, 1932 to 1943. 4 years have data for under 90 percent of days and are left out of rankings: 1932, 1937, 1940, 1943.
Days with data per year at Mercey Hot Springs
YearDays with dataShare of yearComplete
19328022%No
1933364100%Yes
1934365100%Yes
1935365100%Yes
193636499%Yes
193732489%No
193835196%Yes
193935096%Yes
194029380%No
1941365100%Yes
194235898%Yes
194330082%No

Latest Records

0

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

Extremes by Year

1932 to 1967
Yearly extremes at Mercey Hot Springs: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)45.0 C (113.0 F)193342.5 C (108.5 F)12
Coldest night (TNn)-8.9 C (16.0 F)1937-5.3 C (22.5 F)12
Wettest day (Rx1day)57.9 mm (2.3 in)195623.4 mm (0.9 in)31
Wettest five days (Rx5day)87.4 mm (3.4 in)195837.6 mm (1.5 in)31
Longest dry spell (CDD)208 days1959131 days31

Hottest day (TXx)

Hottest day (TXx) at Mercey Hot Springs by year The hottest day of the year at Mercey Hot Springs, 1932 to 1967. The record is 45.0 C (113.0 F) in 1933, marked on the chart; the median year is 42.5 C (108.5 F). 3537.54042.545194019501960Record: 45.0 C (113.0 F) in 1933
The hottest day of the year at Mercey Hot Springs, 1932 to 1967. The record is 45.0 C (113.0 F) in 1933, marked on the chart; the median year is 42.5 C (108.5 F).
Hottest day (TXx) at Mercey Hot Springs by year
YearHottest day (TXx)
193236.1 C (97.0 F)
193345.0 C (113.0 F)
193442.2 C (108.0 F)
193541.7 C (107.1 F)
193642.8 C (109.0 F)
193742.2 C (108.0 F)
193843.9 C (111.0 F)
193943.3 C (109.9 F)
194041.7 C (107.1 F)
194142.8 C (109.0 F)
194245.0 C (113.0 F)
194341.7 C (107.1 F)
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a

Coldest night (TNn)

Coldest night (TNn) at Mercey Hot Springs by year The coldest night of the year at Mercey Hot Springs, 1932 to 1967. The record is -8.9 C (16.0 F) in 1937, marked on the chart; the median year is -5.3 C (22.5 F). -10-8-6-4-20194019501960Record: -8.9 C (16.0 F) in 1937
The coldest night of the year at Mercey Hot Springs, 1932 to 1967. The record is -8.9 C (16.0 F) in 1937, marked on the chart; the median year is -5.3 C (22.5 F).
Coldest night (TNn) at Mercey Hot Springs by year
YearColdest night (TNn)
1932-7.8 C (18.0 F)
1933-3.9 C (25.0 F)
1934-2.2 C (28.0 F)
1935-2.8 C (27.0 F)
1936-1.1 C (30.0 F)
1937-8.9 C (16.0 F)
1938-6.7 C (19.9 F)
1939-5.0 C (23.0 F)
1940-6.1 C (21.0 F)
1941-2.8 C (27.0 F)
1942-6.7 C (19.9 F)
1943-5.6 C (21.9 F)
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Mercey Hot Springs by year The wettest day of the year at Mercey Hot Springs, 1932 to 1967. The record is 57.9 mm (2.3 in) in 1956, marked on the chart; the median year is 23.4 mm (0.9 in). 0204060194019501960Record: 57.9 mm (2.3 in) in 1956
The wettest day of the year at Mercey Hot Springs, 1932 to 1967. The record is 57.9 mm (2.3 in) in 1956, marked on the chart; the median year is 23.4 mm (0.9 in).
Wettest day (Rx1day) at Mercey Hot Springs by year
YearWettest day (Rx1day)
193210.7 mm (0.4 in)
193319.6 mm (0.8 in)
193424.9 mm (1.0 in)
193523.4 mm (0.9 in)
193622.9 mm (0.9 in)
193726.7 mm (1.1 in)
193834.3 mm (1.4 in)
193943.2 mm (1.7 in)
194035.1 mm (1.4 in)
194123.6 mm (0.9 in)
194218.3 mm (0.7 in)
194319.1 mm (0.8 in)
19497.4 mm (0.29 in)
195016.3 mm (0.6 in)
195123.4 mm (0.9 in)
195219.1 mm (0.8 in)
195313.7 mm (0.5 in)
195416.5 mm (0.6 in)
195515.7 mm (0.6 in)
195657.9 mm (2.3 in)
195722.9 mm (0.9 in)
195847.0 mm (1.9 in)
195929.5 mm (1.2 in)
196016.5 mm (0.6 in)
196124.9 mm (1.0 in)
196234.5 mm (1.4 in)
196322.1 mm (0.9 in)
196422.1 mm (0.9 in)
196523.6 mm (0.9 in)
196626.7 mm (1.1 in)
196725.4 mm (1.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mercey Hot Springs by year The wettest five days of the year at Mercey Hot Springs, 1932 to 1967. The record is 87.4 mm (3.4 in) in 1958, marked on the chart; the median year is 37.6 mm (1.5 in). 020406080100194019501960Record: 87.4 mm (3.4 in) in 1958
The wettest five days of the year at Mercey Hot Springs, 1932 to 1967. The record is 87.4 mm (3.4 in) in 1958, marked on the chart; the median year is 37.6 mm (1.5 in).
Wettest five days (Rx5day) at Mercey Hot Springs by year
YearWettest five days (Rx5day)
193210.7 mm (0.4 in)
193335.9 mm (1.4 in)
193441.1 mm (1.6 in)
193538.9 mm (1.5 in)
193650.5 mm (2.0 in)
193764.8 mm (2.6 in)
193885.9 mm (3.4 in)
193943.2 mm (1.7 in)
194066.2 mm (2.6 in)
194151.3 mm (2.0 in)
194237.6 mm (1.5 in)
194335.7 mm (1.4 in)
19499.9 mm (0.39 in)
195029.5 mm (1.2 in)
195141.9 mm (1.6 in)
195233.8 mm (1.3 in)
195316.0 mm (0.6 in)
195419.5 mm (0.8 in)
195528.6 mm (1.1 in)
195657.9 mm (2.3 in)
195734.6 mm (1.4 in)
195887.4 mm (3.4 in)
195933.1 mm (1.3 in)
196031.0 mm (1.2 in)
196135.8 mm (1.4 in)
196267.2 mm (2.6 in)
196345.7 mm (1.8 in)
196429.4 mm (1.2 in)
196541.4 mm (1.6 in)
196664.1 mm (2.5 in)
196732.0 mm (1.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mercey Hot Springs by year The longest dry spell of the year at Mercey Hot Springs, 1932 to 1967. The record is 208 days in 1959, marked on the chart; the median year is 131 days. 050100150200250194019501960Record: 208 days in 1959
The longest dry spell of the year at Mercey Hot Springs, 1932 to 1967. The record is 208 days in 1959, marked on the chart; the median year is 131 days.
Longest dry spell (CDD) at Mercey Hot Springs by year
YearLongest dry spell (CDD)
193260 days
1933148 days
1934133 days
1935117 days
1936100 days
1937168 days
193884 days
1939126 days
1940190 days
1941171 days
1942179 days
1943186 days
194912 days
1950162 days
1951177 days
1952151 days
1953106 days
1954185 days
1955188 days
1956122 days
1957131 days
195895 days
1959208 days
1960108 days
1961197 days
1962137 days
196364 days
196484 days
1965122 days
196675 days
196720 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 Mercey Hot Springs standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mercey Hot Springs 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).