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Built 2026-10-17 (17 October 2026)

Covina Weather Records (USC00042088)

Record envelope, standing records and threshold days for Covina (USC00042088), California, United States, with 44 years of record.

Key Facts for Covina

  • Covina (USC00042088) is a weather station in California, United States at 34.07 latitude and -117.87 longitude, 183 m (600 ft) above sea level.
  • The station reports from 1906 to 1949, 44 years of record.
  • 1,464 records set at Covina 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, 34.07 latitude, -117.87 longitude.
  • Elevation: 183 m (600 ft).
  • Period of record: 1906 to 1949, 44 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Covina, with 2026 drawn through them The band shows the record high and record low for each calendar day at Covina. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Covina. 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 Covina, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan30.6 C (87.1 F)-4.4 C (24.1 F)n/an/a
Feb34.4 C (93.9 F)-3.3 C (26.1 F)n/an/a
Mar33.3 C (91.9 F)-1.1 C (30.0 F)n/an/a
Apr37.8 C (100.0 F)1.1 C (34.0 F)n/an/a
May40.6 C (105.1 F)3.3 C (37.9 F)n/an/a
Jun38.3 C (100.9 F)7.2 C (45.0 F)n/an/a
Jul42.2 C (108.0 F)8.3 C (46.9 F)n/an/a
Aug40.6 C (105.1 F)8.9 C (48.0 F)n/an/a
Sep42.8 C (109.0 F)7.2 C (45.0 F)n/an/a
Oct37.8 C (100.0 F)3.9 C (39.0 F)n/an/a
Nov34.4 C (93.9 F)0.0 C (32.0 F)n/an/a
Dec31.7 C (89.1 F)-4.4 C (24.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Covina by the year they were set 1,464 records at Covina still stand. 1924 holds the most, with 179. 0501001502001922: 1061923: 1211924: 1791925: 1431926: 1081927: 1281928: 501943: 1141944: 961945: 1081946: 901947: 1001948: 771949: 441922192419261928194419461948
1,464 records at Covina still stand. 1924 holds the most, with 179.
Standing records at Covina by the year they were set
Year setStanding records
1922106
1923121
1924179
1925143
1926108
1927128
192850
1943114
194496
1945108
194690
1947100
194877
194944

Wettest Day of Each Month

Feb: 137.2 mm (5.4 in)
Record daily precipitation for each month at Covina The wettest day on record for each calendar month at Covina. The most was 137.2 mm (5.4 in) on 19 February 1914. 050100150 Jan: 123.2 mm (4.9 in), 23 January 1943 Jan Feb: 137.2 mm (5.4 in), 19 February 1914 Feb Mar: 61.0 mm (2.4 in), 10 March 1912 Mar Apr: 112.3 mm (4.4 in), 5 April 1926 Apr May: 20.8 mm (0.8 in), 9 May 1922 May Jun: 8.9 mm (0.35 in), 3 June 1925 Jun Jul: 1.8 mm (0.07 in), 31 July 1922 Jul Aug: 6.9 mm (0.27 in), 18 August 1945 Aug Sep: 25.4 mm (1.0 in), 24 September 1908 Sep Oct: 54.4 mm (2.1 in), 31 October 1927 Oct Nov: 80.5 mm (3.2 in), 24 November 1926 Nov Dec: 99.1 mm (3.9 in), 22 December 1945 Dec
The wettest day on record for each calendar month at Covina. The most was 137.2 mm (5.4 in) on 19 February 1914.
Record daily precipitation for each month at Covina
MonthRecord daily precipitation (mm)Date
Jan123.2 mm (4.9 in)23 January 1943
Feb137.2 mm (5.4 in)19 February 1914
Mar61.0 mm (2.4 in)10 March 1912
Apr112.3 mm (4.4 in)5 April 1926
May20.8 mm (0.8 in)9 May 1922
Jun8.9 mm (0.35 in)3 June 1925
Jul1.8 mm (0.07 in)31 July 1922
Aug6.9 mm (0.27 in)18 August 1945
Sep25.4 mm (1.0 in)24 September 1908
Oct54.4 mm (2.1 in)31 October 1927
Nov80.5 mm (3.2 in)24 November 1926
Dec99.1 mm (3.9 in)22 December 1945

Period of Record Coverage

1922 to 1949
Days with data per year at Covina 14 years of record at Covina, 1922 to 1949. 2 years have data for under 90 percent of days and are left out of rankings: 1928, 1949. 1922: 364 of 365 days1923: 362 of 365 days1924: 366 of 366 days1925: 365 of 365 days1926: 364 of 365 days1927: 365 of 365 days1928: 173 of 366 days1943: 364 of 365 days1944: 364 of 366 days1945: 361 of 365 days1946: 363 of 365 days1947: 363 of 365 days1948: 362 of 366 days1949: 150 of 365 days19251945
14 years of record at Covina, 1922 to 1949. 2 years have data for under 90 percent of days and are left out of rankings: 1928, 1949.
Days with data per year at Covina
YearDays with dataShare of yearComplete
1922364100%Yes
192336299%Yes
1924366100%Yes
1925365100%Yes
1926364100%Yes
1927365100%Yes
192817347%No
1943364100%Yes
194436499%Yes
194536199%Yes
194636399%Yes
194736399%Yes
194836299%Yes
194915041%No

Latest Records

0

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

Climate Trend

12 complete years, 1922 to 1948
Annual mean temperature at Covina as warming stripes, 1922 to 1948 One stripe for each of 12 complete years at Covina, 1922 to 1948. Blue stripes are years cooler than the station's own mean of 17.0 C (62.7 F); red stripes are warmer. The coolest year was 1927, at 15.8 C (60.5 F), and the warmest was 1943, at 18.2 C (64.8 F). The strongest colour marks a difference of 1.3 C (2.3 F). 1922: 16.9 C, -0.1 C from the station mean1923: 17.0 C, -0.1 C from the station mean1924: 16.8 C, -0.3 C from the station mean1925: 16.4 C, -0.7 C from the station mean1926: 16.9 C, -0.2 C from the station mean1927: 15.8 C, -1.2 C from the station mean1943: 18.2 C, +1.2 C from the station mean1944: 16.9 C, -0.1 C from the station mean1945: 17.6 C, +0.5 C from the station mean1946: 17.5 C, +0.4 C from the station mean1947: 17.9 C, +0.9 C from the station mean1948: 16.8 C, -0.2 C from the station mean192219251930193519401945
One stripe for each of 12 complete years at Covina, 1922 to 1948. Blue stripes are years cooler than the station's own mean of 17.0 C (62.7 F); red stripes are warmer. The coolest year was 1927, at 15.8 C (60.5 F), and the warmest was 1943, at 18.2 C (64.8 F). The strongest colour marks a difference of 1.3 C (2.3 F).
Annual mean temperature at Covina as warming stripes, 1922 to 1948
YearAnnual mean temperatureDifference from the station mean
192216.9 C-0.15 C
192317.0 C-0.09 C
192416.8 C-0.30 C
192516.4 C-0.68 C
192616.9 C-0.18 C
192715.8 C-1.23 C
194318.2 C+1.17 C
194416.9 C-0.12 C
194517.6 C+0.51 C
194617.5 C+0.40 C
194717.9 C+0.86 C
194816.8 C-0.24 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

1906 to 1949
Yearly extremes at Covina: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)194439.7 C (103.5 F)14
Coldest night (TNn)-4.4 C (24.1 F)1924-1.9 C (28.5 F)14
Wettest day (Rx1day)137.2 mm (5.4 in)191464.0 mm (2.5 in)27
Wettest five days (Rx5day)249.7 mm (9.8 in)192788.3 mm (3.5 in)24
Longest dry spell (CDD)190 days194348 days25

Hottest day (TXx)

Hottest day (TXx) at Covina by year The hottest day of the year at Covina, 1906 to 1949. The record is 42.8 C (109.0 F) in 1944, marked on the chart; the median year is 39.7 C (103.5 F). 3436384042441910192019301940Record: 42.8 C (109.0 F) in 1944
The hottest day of the year at Covina, 1906 to 1949. The record is 42.8 C (109.0 F) in 1944, marked on the chart; the median year is 39.7 C (103.5 F).
Hottest day (TXx) at Covina by year
YearHottest day (TXx)
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
192241.7 C (107.1 F)
192337.2 C (99.0 F)
192440.6 C (105.1 F)
192540.0 C (104.0 F)
192638.9 C (102.0 F)
192739.4 C (102.9 F)
192836.1 C (97.0 F)
194342.2 C (108.0 F)
194442.8 C (109.0 F)
194539.4 C (102.9 F)
194638.9 C (102.0 F)
194742.2 C (108.0 F)
194841.1 C (106.0 F)
194935.6 C (96.1 F)

Coldest night (TNn)

Coldest night (TNn) at Covina by year The coldest night of the year at Covina, 1906 to 1949. The record is -4.4 C (24.1 F) in 1924, marked on the chart; the median year is -1.9 C (28.5 F). -6-4-2021910192019301940Record: -4.4 C (24.1 F) in 1924
The coldest night of the year at Covina, 1906 to 1949. The record is -4.4 C (24.1 F) in 1924, marked on the chart; the median year is -1.9 C (28.5 F).
Coldest night (TNn) at Covina by year
YearColdest night (TNn)
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
1922-3.9 C (25.0 F)
1923-1.1 C (30.0 F)
1924-4.4 C (24.1 F)
1925-2.8 C (27.0 F)
1926-3.3 C (26.1 F)
1927-1.7 C (28.9 F)
1928-3.3 C (26.1 F)
1943-2.2 C (28.0 F)
19441.1 C (34.0 F)
19450.0 C (32.0 F)
19460.0 C (32.0 F)
1947-1.1 C (30.0 F)
1948-1.7 C (28.9 F)
1949-4.4 C (24.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Covina by year The wettest day of the year at Covina, 1906 to 1949. The record is 137.2 mm (5.4 in) in 1914, marked on the chart; the median year is 64.0 mm (2.5 in). 0501001501910192019301940Record: 137.2 mm (5.4 in) in 1914
The wettest day of the year at Covina, 1906 to 1949. The record is 137.2 mm (5.4 in) in 1914, marked on the chart; the median year is 64.0 mm (2.5 in).
Wettest day (Rx1day) at Covina by year
YearWettest day (Rx1day)
190652.8 mm (2.1 in)
190752.6 mm (2.1 in)
190867.3 mm (2.6 in)
190968.1 mm (2.7 in)
191091.4 mm (3.6 in)
191133.5 mm (1.3 in)
191261.0 mm (2.4 in)
191374.9 mm (2.9 in)
1914137.2 mm (5.4 in)
191569.6 mm (2.7 in)
1916113.0 mm (4.4 in)
191733.0 mm (1.3 in)
191841.9 mm (1.6 in)
192295.5 mm (3.8 in)
192326.4 mm (1.0 in)
192442.7 mm (1.7 in)
192556.9 mm (2.2 in)
1926112.3 mm (4.4 in)
192794.2 mm (3.7 in)
192864.0 mm (2.5 in)
1943123.2 mm (4.9 in)
1944101.6 mm (4.0 in)
194599.1 mm (3.9 in)
194660.5 mm (2.4 in)
194745.2 mm (1.8 in)
194840.6 mm (1.6 in)
194935.6 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Covina by year The wettest five days of the year at Covina, 1906 to 1949. The record is 249.7 mm (9.8 in) in 1927, marked on the chart; the median year is 88.3 mm (3.5 in). 01002003001910192019301940Record: 249.7 mm (9.8 in) in 1927
The wettest five days of the year at Covina, 1906 to 1949. The record is 249.7 mm (9.8 in) in 1927, marked on the chart; the median year is 88.3 mm (3.5 in).
Wettest five days (Rx5day) at Covina by year
YearWettest five days (Rx5day)
190686.5 mm (3.4 in)
1907177.8 mm (7.0 in)
1908116.8 mm (4.6 in)
1909118.2 mm (4.7 in)
1910132.0 mm (5.2 in)
191165.6 mm (2.6 in)
191276.3 mm (3.0 in)
191346.2 mm (1.8 in)
191424.4 mm (1.0 in)
191547.2 mm (1.9 in)
1916n/a
1917n/a
1918n/a
1922124.0 mm (4.9 in)
192342.4 mm (1.7 in)
192490.0 mm (3.5 in)
192556.9 mm (2.2 in)
1926221.5 mm (8.7 in)
1927249.7 mm (9.8 in)
192869.9 mm (2.8 in)
1943239.5 mm (9.4 in)
1944182.2 mm (7.2 in)
1945154.5 mm (6.1 in)
1946103.1 mm (4.1 in)
194772.4 mm (2.9 in)
194849.5 mm (1.9 in)
194981.1 mm (3.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Covina by year The longest dry spell of the year at Covina, 1906 to 1949. The record is 190 days in 1943, marked on the chart; the median year is 48 days. 0501001502001910192019301940Record: 190 days in 1943
The longest dry spell of the year at Covina, 1906 to 1949. The record is 190 days in 1943, marked on the chart; the median year is 48 days.
Longest dry spell (CDD) at Covina by year
YearLongest dry spell (CDD)
190621 days
190728 days
190814 days
190920 days
191018 days
1911n/a
191226 days
191311 days
191420 days
19151 day
1916n/a
19171 day
19182 days
192287 days
192383 days
1924133 days
1925122 days
1926149 days
1927172 days
192835 days
1943190 days
1944186 days
194589 days
1946175 days
194748 days
194887 days
194954 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 Covina standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Covina 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

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