San Bernardino Lagunas Weather Records (MXN00021053)
Record envelope, standing records and threshold days for San Bernardino Lagunas (MXN00021053), Mexico, with 55 years of record.
Key Facts for San Bernardino Lagunas
- San Bernardino Lagunas (MXN00021053) is a weather station in Mexico at 18.60 latitude and -97.27 longitude, 1,693 m (5,554 ft) above sea level.
- The station reports from 1955 to 2009, 55 years of record.
- 1,464 records set at San Bernardino Lagunas still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- San Bernardino Lagunas set a monthly record high minimum temperature of 15.0 C (59.0 F) on 31 December 2009.
About the Station
- Location: Mexico, 18.60 latitude, -97.27 longitude.
- Elevation: 1,693 m (5,554 ft).
- Period of record: 1955 to 2009, 55 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 30.0 C (86.0 F) | -9.4 C (15.1 F) | n/a | n/a |
| Feb | 28.9 C (84.0 F) | -5.6 C (21.9 F) | n/a | n/a |
| Mar | 32.8 C (91.0 F) | -6.1 C (21.0 F) | n/a | n/a |
| Apr | 35.0 C (95.0 F) | -3.3 C (26.1 F) | n/a | n/a |
| May | 38.9 C (102.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Jun | 38.9 C (102.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Jul | 30.0 C (86.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Aug | 30.0 C (86.0 F) | 0.6 C (33.1 F) | n/a | n/a |
| Sep | 28.9 C (84.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Oct | 30.0 C (86.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Nov | 30.0 C (86.0 F) | -6.1 C (21.0 F) | n/a | n/a |
| Dec | 28.9 C (84.0 F) | -7.2 C (19.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1955 | 53 |
| 1956 | 58 |
| 1957 | 31 |
| 1958 | 21 |
| 1959 | 30 |
| 1960 | 50 |
| 1961 | 36 |
| 1962 | 35 |
| 1963 | 22 |
| 1964 | 25 |
| 1965 | 41 |
| 1966 | 53 |
| 1967 | 26 |
| 1968 | 33 |
| 1969 | 12 |
| 1970 | 39 |
| 1971 | 24 |
| 1972 | 12 |
| 1973 | 32 |
| 1974 | 27 |
| 1975 | 36 |
| 1976 | 13 |
| 1977 | 13 |
| 1978 | 12 |
| 1979 | 18 |
| 1980 | 20 |
| 1981 | 18 |
| 1982 | 28 |
| 1983 | 28 |
| 1984 | 30 |
| 1989 | 1 |
| 1990 | 9 |
| 1991 | 13 |
| 1992 | 5 |
| 1993 | 13 |
| 1994 | 2 |
| 1995 | 44 |
| 1996 | 7 |
| 1997 | 21 |
| 1998 | 51 |
| 1999 | 5 |
| 2000 | 14 |
| 2001 | 14 |
| 2002 | 32 |
| 2003 | 30 |
| 2004 | 50 |
| 2005 | 46 |
| 2006 | 68 |
| 2007 | 56 |
| 2008 | 43 |
| 2009 | 64 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1998-05-08 | Record high maximum temperature | Record high maximum temperature 38.9 C (102.0 F) |
| 2005-01-27 | Record low minimum temperature | Record low minimum temperature -9.4 C (15.1 F) |
Wettest Day of Each Month
Jun: 87.4 mm (3.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 40.6 mm (1.6 in) | 30 January 2004 |
| Feb | 25.7 mm (1.0 in) | 25 February 1983 |
| Mar | 29.5 mm (1.2 in) | 12 March 1974 |
| Apr | 57.9 mm (2.3 in) | 3 April 1966 |
| May | 58.2 mm (2.3 in) | 1 May 2007 |
| Jun | 87.4 mm (3.4 in) | 17 June 1981 |
| Jul | 69.3 mm (2.7 in) | 13 July 1995 |
| Aug | 63.5 mm (2.5 in) | 4 August 1970 |
| Sep | 64.8 mm (2.6 in) | 17 September 1979 |
| Oct | 62.0 mm (2.4 in) | 20 October 1995 |
| Nov | 29.2 mm (1.1 in) | 19 November 1964 |
| Dec | 26.4 mm (1.0 in) | 25 December 1971 |
Period of Record Coverage
1955 to 2009| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1955 | 291 | 80% | No |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 302 | 83% | No |
| 1968 | 366 | 100% | Yes |
| 1969 | 333 | 91% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 335 | 92% | Yes |
| 1989 | 122 | 33% | No |
| 1990 | 335 | 92% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 305 | 83% | No |
| 1993 | 365 | 100% | Yes |
| 1994 | 212 | 58% | No |
| 1995 | 362 | 99% | Yes |
| 1996 | 273 | 75% | No |
| 1997 | 305 | 84% | No |
| 1998 | 334 | 92% | Yes |
| 1999 | 300 | 82% | No |
| 2000 | 366 | 100% | Yes |
| 2001 | 356 | 98% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 363 | 99% | Yes |
| 2005 | 334 | 92% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 330 | 90% | Yes |
| 2008 | 263 | 72% | No |
| 2009 | 348 | 95% | Yes |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 December 2009 | San Bernardino Lagunas, MX | monthly high min | 15.0 C (59.0 F) | 1.1 C (2.0 F) | 1 year | 18 of 100 (Routine) |
| 30 December 2009 | San Bernardino Lagunas, MX | daily high max | 23.9 C (75.0 F) | 1.1 C (2.0 F) | 32 years | 17 of 100 (Routine) |
| 29 December 2009 | San Bernardino Lagunas, MX | daily high max | 25.6 C (78.1 F) | 0.6 C (1.1 F) | 30 years | 15 of 100 (Routine) |
| 29 December 2009 | San Bernardino Lagunas, MX | monthly high min (Tie) | 13.9 C (57.0 F) | tie | 1 year | 3 of 100 (Routine) |
| 28 December 2009 | San Bernardino Lagunas, MX | daily high min | 7.8 C (46.0 F) | 1.1 C (2.0 F) | 30 years | 17 of 100 (Routine) |
| 27 December 2009 | San Bernardino Lagunas, MX | daily high min | 10.0 C (50.0 F) | 2.2 C (4.0 F) | 6 years | 13 of 100 (Routine) |
| 26 December 2009 | San Bernardino Lagunas, MX | daily high max (Tie) | 25.0 C (77.0 F) | tie | 24 years | 3 of 100 (Routine) |
| 26 December 2009 | San Bernardino Lagunas, MX | daily high min (Tie) | 8.9 C (48.0 F) | tie | 36 years | 3 of 100 (Routine) |
| 19 December 2009 | San Bernardino Lagunas, MX | daily high min (Tie) | 11.7 C (53.1 F) | tie | 4 years | 1 of 100 (Routine) |
| 18 December 2009 | San Bernardino Lagunas, MX | daily high min (Tie) | 10.0 C (50.0 F) | tie | 0 years | 1 of 100 (Routine) |
| 16 December 2009 | San Bernardino Lagunas, MX | daily high min | 12.8 C (55.0 F) | 1.1 C (2.0 F) | 0 years | 8 of 100 (Routine) |
| 16 December 2009 | San Bernardino Lagunas, MX | daily rain (Tie) | 1.3 mm (0.05 in) | tie | 46 years | 4 of 100 (Routine) |
| 15 December 2009 | San Bernardino Lagunas, MX | daily high min | 11.7 C (53.1 F) | 2.8 C (5.0 F) | 0 years | 14 of 100 (Routine) |
| 14 December 2009 | San Bernardino Lagunas, MX | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 4 years | 7 of 100 (Routine) |
| 11 December 2009 | San Bernardino Lagunas, MX | daily high max (Tie) | 25.6 C (78.1 F) | tie | 12 years | 2 of 100 (Routine) |
| 8 December 2009 | San Bernardino Lagunas, MX | daily high min (Tie) | 8.9 C (48.0 F) | tie | 4 years | 1 of 100 (Routine) |
| 6 December 2009 | San Bernardino Lagunas, MX | daily high min | 10.6 C (51.1 F) | 1.7 C (3.1 F) | 4 years | 11 of 100 (Routine) |
| 4 December 2009 | San Bernardino Lagunas, MX | daily high min | 10.6 C (51.1 F) | 1.7 C (3.1 F) | 4 years | 11 of 100 (Routine) |
| 30 November 2009 | San Bernardino Lagunas, MX | daily high min | 13.9 C (57.0 F) | 2.2 C (4.0 F) | 12 years | 15 of 100 (Routine) |
| 30 November 2009 | San Bernardino Lagunas, MX | daily high max (Tie) | 26.7 C (80.1 F) | tie | 4 years | 1 of 100 (Routine) |
Climate Trend
34 complete years, 1956 to 2006| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1956 | 11.6 C | -1.35 C |
| 1957 | 12.2 C | -0.67 C |
| 1958 | 12.7 C | -0.17 C |
| 1959 | 12.0 C | -0.89 C |
| 1960 | 12.0 C | -0.94 C |
| 1961 | 12.2 C | -0.73 C |
| 1962 | 12.1 C | -0.82 C |
| 1963 | 12.2 C | -0.70 C |
| 1964 | 12.5 C | -0.45 C |
| 1965 | 11.9 C | -1.01 C |
| 1968 | 11.6 C | -1.30 C |
| 1970 | 12.2 C | -0.70 C |
| 1971 | 12.0 C | -0.92 C |
| 1972 | 12.1 C | -0.78 C |
| 1973 | 13.1 C | +0.18 C |
| 1974 | 12.8 C | -0.06 C |
| 1975 | 13.7 C | +0.83 C |
| 1976 | 13.4 C | +0.52 C |
| 1977 | 12.8 C | -0.06 C |
| 1978 | 13.0 C | +0.14 C |
| 1979 | 13.5 C | +0.55 C |
| 1980 | 13.7 C | +0.78 C |
| 1981 | 13.5 C | +0.57 C |
| 1982 | 13.7 C | +0.76 C |
| 1983 | 13.5 C | +0.62 C |
| 1991 | 13.8 C | +0.90 C |
| 1993 | 13.2 C | +0.27 C |
| 1995 | 13.7 C | +0.79 C |
| 2000 | 12.8 C | -0.14 C |
| 2001 | 13.1 C | +0.22 C |
| 2002 | 13.6 C | +0.65 C |
| 2003 | 13.7 C | +0.84 C |
| 2004 | 14.3 C | +1.36 C |
| 2006 | 14.7 C | +1.79 C |
The annual mean temperature here has risen by 0.4 C (0.3 to 0.5) per decade over 1956 to 2006. In Fahrenheit: 0.7 F (0.5 to 1.0) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.4 C (0.3 to 0.5) per decade | 0.7 F (0.5 to 1.0) per decade | 1956 to 2006 | 34 | Rise |
| Mean daily maximum | 0.7 C (0.5 to 0.9) per decade | 1.3 F (0.9 to 1.6) per decade | 1956 to 2006 | 34 | Rise |
| Mean daily minimum | 0.1 C (-0.1 to 0.3) per decade | 0.2 F (-0.1 to 0.5) per decade | 1956 to 2006 | 34 | Not clearly different from zero |
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 2009| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 1998 | 28.9 C (84.0 F) | 51 |
| Coldest night (TNn) | -9.4 C (15.1 F) | 2005 | -4.4 C (24.1 F) | 51 |
| Wettest day (Rx1day) | 87.4 mm (3.4 in) | 1981 | 43.2 mm (1.7 in) | 51 |
| Wettest five days (Rx5day) | 169.8 mm (6.7 in) | 1979 | 93.5 mm (3.7 in) | 51 |
| Longest dry spell (CDD) | 93 days | 1962 | 41 days | 51 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1955 | 27.8 C (82.0 F) |
| 1956 | 28.9 C (84.0 F) |
| 1957 | 27.2 C (81.0 F) |
| 1958 | 28.9 C (84.0 F) |
| 1959 | 26.7 C (80.1 F) |
| 1960 | 27.8 C (82.0 F) |
| 1961 | 28.9 C (84.0 F) |
| 1962 | 27.8 C (82.0 F) |
| 1963 | 27.8 C (82.0 F) |
| 1964 | 28.9 C (84.0 F) |
| 1965 | 28.9 C (84.0 F) |
| 1966 | 27.8 C (82.0 F) |
| 1967 | 26.1 C (79.0 F) |
| 1968 | 27.8 C (82.0 F) |
| 1969 | 28.9 C (84.0 F) |
| 1970 | 30.0 C (86.0 F) |
| 1971 | 28.9 C (84.0 F) |
| 1972 | 26.7 C (80.1 F) |
| 1973 | 26.7 C (80.1 F) |
| 1974 | 27.8 C (82.0 F) |
| 1975 | 34.4 C (93.9 F) |
| 1976 | 30.0 C (86.0 F) |
| 1977 | 30.6 C (87.1 F) |
| 1978 | 30.0 C (86.0 F) |
| 1979 | 26.7 C (80.1 F) |
| 1980 | 32.8 C (91.0 F) |
| 1981 | 32.8 C (91.0 F) |
| 1982 | 33.9 C (93.0 F) |
| 1983 | 31.1 C (88.0 F) |
| 1984 | 31.1 C (88.0 F) |
| 1989 | 23.9 C (75.0 F) |
| 1990 | 28.9 C (84.0 F) |
| 1991 | 31.7 C (89.1 F) |
| 1992 | 32.8 C (91.0 F) |
| 1993 | 28.9 C (84.0 F) |
| 1994 | 28.9 C (84.0 F) |
| 1995 | 29.4 C (84.9 F) |
| 1996 | 28.9 C (84.0 F) |
| 1997 | 30.0 C (86.0 F) |
| 1998 | 38.9 C (102.0 F) |
| 1999 | 28.9 C (84.0 F) |
| 2000 | 28.9 C (84.0 F) |
| 2001 | 29.4 C (84.9 F) |
| 2002 | 30.0 C (86.0 F) |
| 2003 | 31.7 C (89.1 F) |
| 2004 | 28.9 C (84.0 F) |
| 2005 | 30.0 C (86.0 F) |
| 2006 | 35.0 C (95.0 F) |
| 2007 | 28.9 C (84.0 F) |
| 2008 | 30.0 C (86.0 F) |
| 2009 | 30.6 C (87.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1955 | -5.0 C (23.0 F) |
| 1956 | -7.2 C (19.0 F) |
| 1957 | -5.6 C (21.9 F) |
| 1958 | -3.3 C (26.1 F) |
| 1959 | -3.9 C (25.0 F) |
| 1960 | -5.0 C (23.0 F) |
| 1961 | -5.6 C (21.9 F) |
| 1962 | -5.0 C (23.0 F) |
| 1963 | -5.6 C (21.9 F) |
| 1964 | -4.4 C (24.1 F) |
| 1965 | -2.8 C (27.0 F) |
| 1966 | -6.1 C (21.0 F) |
| 1967 | -5.0 C (23.0 F) |
| 1968 | -5.6 C (21.9 F) |
| 1969 | -5.0 C (23.0 F) |
| 1970 | -6.1 C (21.0 F) |
| 1971 | -3.3 C (26.1 F) |
| 1972 | -3.3 C (26.1 F) |
| 1973 | -2.2 C (28.0 F) |
| 1974 | -3.3 C (26.1 F) |
| 1975 | -4.4 C (24.1 F) |
| 1976 | -4.4 C (24.1 F) |
| 1977 | -2.2 C (28.0 F) |
| 1978 | 0.0 C (32.0 F) |
| 1979 | 0.0 C (32.0 F) |
| 1980 | -3.3 C (26.1 F) |
| 1981 | -3.3 C (26.1 F) |
| 1982 | -4.4 C (24.1 F) |
| 1983 | 0.0 C (32.0 F) |
| 1984 | -3.9 C (25.0 F) |
| 1989 | -2.2 C (28.0 F) |
| 1990 | -3.3 C (26.1 F) |
| 1991 | -3.3 C (26.1 F) |
| 1992 | -2.2 C (28.0 F) |
| 1993 | -2.2 C (28.0 F) |
| 1994 | 0.0 C (32.0 F) |
| 1995 | -5.0 C (23.0 F) |
| 1996 | -4.4 C (24.1 F) |
| 1997 | -2.2 C (28.0 F) |
| 1998 | -4.4 C (24.1 F) |
| 1999 | -3.3 C (26.1 F) |
| 2000 | -4.4 C (24.1 F) |
| 2001 | -4.4 C (24.1 F) |
| 2002 | -4.4 C (24.1 F) |
| 2003 | -3.3 C (26.1 F) |
| 2004 | -7.2 C (19.0 F) |
| 2005 | -9.4 C (15.1 F) |
| 2006 | -6.1 C (21.0 F) |
| 2007 | -6.1 C (21.0 F) |
| 2008 | -5.0 C (23.0 F) |
| 2009 | -4.4 C (24.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1955 | 54.9 mm (2.2 in) |
| 1956 | 40.4 mm (1.6 in) |
| 1957 | 40.4 mm (1.6 in) |
| 1958 | 47.5 mm (1.9 in) |
| 1959 | 55.9 mm (2.2 in) |
| 1960 | 55.9 mm (2.2 in) |
| 1961 | 42.4 mm (1.7 in) |
| 1962 | 31.5 mm (1.2 in) |
| 1963 | 37.8 mm (1.5 in) |
| 1964 | 33.8 mm (1.3 in) |
| 1965 | 22.4 mm (0.9 in) |
| 1966 | 57.9 mm (2.3 in) |
| 1967 | 37.1 mm (1.5 in) |
| 1968 | 43.9 mm (1.7 in) |
| 1969 | 40.1 mm (1.6 in) |
| 1970 | 63.5 mm (2.5 in) |
| 1971 | 38.1 mm (1.5 in) |
| 1972 | 51.8 mm (2.0 in) |
| 1973 | 41.4 mm (1.6 in) |
| 1974 | 32.0 mm (1.3 in) |
| 1975 | 56.6 mm (2.2 in) |
| 1976 | 48.0 mm (1.9 in) |
| 1977 | 31.2 mm (1.2 in) |
| 1978 | 30.7 mm (1.2 in) |
| 1979 | 64.8 mm (2.6 in) |
| 1980 | 61.7 mm (2.4 in) |
| 1981 | 87.4 mm (3.4 in) |
| 1982 | 37.3 mm (1.5 in) |
| 1983 | 43.2 mm (1.7 in) |
| 1984 | 40.9 mm (1.6 in) |
| 1989 | 24.4 mm (1.0 in) |
| 1990 | 27.2 mm (1.1 in) |
| 1991 | 34.0 mm (1.3 in) |
| 1992 | 48.0 mm (1.9 in) |
| 1993 | 51.1 mm (2.0 in) |
| 1994 | 25.4 mm (1.0 in) |
| 1995 | 69.3 mm (2.7 in) |
| 1996 | 27.9 mm (1.1 in) |
| 1997 | 49.3 mm (1.9 in) |
| 1998 | 58.7 mm (2.3 in) |
| 1999 | 40.6 mm (1.6 in) |
| 2000 | 46.5 mm (1.8 in) |
| 2001 | 42.7 mm (1.7 in) |
| 2002 | 46.7 mm (1.8 in) |
| 2003 | 50.8 mm (2.0 in) |
| 2004 | 54.9 mm (2.2 in) |
| 2005 | 45.2 mm (1.8 in) |
| 2006 | 37.1 mm (1.5 in) |
| 2007 | 58.2 mm (2.3 in) |
| 2008 | 42.9 mm (1.7 in) |
| 2009 | 52.8 mm (2.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1955 | 148.3 mm (5.8 in) |
| 1956 | 74.9 mm (2.9 in) |
| 1957 | 73.2 mm (2.9 in) |
| 1958 | 84.3 mm (3.3 in) |
| 1959 | 113.5 mm (4.5 in) |
| 1960 | 120.2 mm (4.7 in) |
| 1961 | 78.0 mm (3.1 in) |
| 1962 | 51.3 mm (2.0 in) |
| 1963 | 71.4 mm (2.8 in) |
| 1964 | 56.7 mm (2.2 in) |
| 1965 | 44.0 mm (1.7 in) |
| 1966 | 67.9 mm (2.7 in) |
| 1967 | 79.9 mm (3.1 in) |
| 1968 | 119.3 mm (4.7 in) |
| 1969 | 116.9 mm (4.6 in) |
| 1970 | 112.1 mm (4.4 in) |
| 1971 | 64.0 mm (2.5 in) |
| 1972 | 104.9 mm (4.1 in) |
| 1973 | 104.2 mm (4.1 in) |
| 1974 | 103.1 mm (4.1 in) |
| 1975 | 168.1 mm (6.6 in) |
| 1976 | 125.7 mm (4.9 in) |
| 1977 | 55.2 mm (2.2 in) |
| 1978 | 63.0 mm (2.5 in) |
| 1979 | 169.8 mm (6.7 in) |
| 1980 | 134.9 mm (5.3 in) |
| 1981 | 115.3 mm (4.5 in) |
| 1982 | 80.9 mm (3.2 in) |
| 1983 | 65.1 mm (2.6 in) |
| 1984 | 125.2 mm (4.9 in) |
| 1989 | 62.0 mm (2.4 in) |
| 1990 | 49.6 mm (2.0 in) |
| 1991 | 102.9 mm (4.1 in) |
| 1992 | 92.0 mm (3.6 in) |
| 1993 | 122.5 mm (4.8 in) |
| 1994 | 48.6 mm (1.9 in) |
| 1995 | 121.3 mm (4.8 in) |
| 1996 | 93.5 mm (3.7 in) |
| 1997 | 119.0 mm (4.7 in) |
| 1998 | 126.2 mm (5.0 in) |
| 1999 | 91.4 mm (3.6 in) |
| 2000 | 75.5 mm (3.0 in) |
| 2001 | 93.2 mm (3.7 in) |
| 2002 | 97.4 mm (3.8 in) |
| 2003 | 86.2 mm (3.4 in) |
| 2004 | 105.6 mm (4.2 in) |
| 2005 | 93.0 mm (3.7 in) |
| 2006 | 86.4 mm (3.4 in) |
| 2007 | 102.2 mm (4.0 in) |
| 2008 | 93.8 mm (3.7 in) |
| 2009 | 144.1 mm (5.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1955 | 54 days |
| 1956 | 35 days |
| 1957 | 53 days |
| 1958 | 52 days |
| 1959 | 44 days |
| 1960 | 72 days |
| 1961 | 37 days |
| 1962 | 93 days |
| 1963 | 62 days |
| 1964 | 76 days |
| 1965 | 33 days |
| 1966 | 49 days |
| 1967 | 30 days |
| 1968 | 39 days |
| 1969 | 62 days |
| 1970 | 81 days |
| 1971 | 40 days |
| 1972 | 32 days |
| 1973 | 57 days |
| 1974 | 41 days |
| 1975 | 83 days |
| 1976 | 49 days |
| 1977 | 92 days |
| 1978 | 35 days |
| 1979 | 41 days |
| 1980 | 26 days |
| 1981 | 35 days |
| 1982 | 51 days |
| 1983 | 60 days |
| 1984 | 35 days |
| 1989 | 23 days |
| 1990 | 27 days |
| 1991 | 68 days |
| 1992 | 37 days |
| 1993 | 42 days |
| 1994 | 38 days |
| 1995 | 34 days |
| 1996 | 26 days |
| 1997 | 27 days |
| 1998 | 89 days |
| 1999 | 45 days |
| 2000 | 53 days |
| 2001 | 43 days |
| 2002 | 32 days |
| 2003 | 48 days |
| 2004 | 43 days |
| 2005 | 33 days |
| 2006 | 35 days |
| 2007 | 26 days |
| 2008 | 37 days |
| 2009 | 36 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
29 years with a frostAcross 29 years with a frost, the median last spring frost at San Bernardino Lagunas falls on 21 March and the median first autumn frost on 9 November, which leaves a median of 227 days between them.
Fitted over all years, the growing season changes by +6.6 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1956 to 2006) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 21 March | n/a | 21 March | n/a | -1.9 days per decade |
| First autumn frost | 9 November | n/a | 9 November | n/a | +4.7 days per decade |
| Growing days | 227 days | n/a | 227 days | n/a | +6.6 days per decade |
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
42 years, 1956 to 2009A day with at least 45.1 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 82.1 mm (3.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 45.1 mm (1.8 in) | |
| 5 years | 56.7 mm (2.2 in) | |
| 10 years | 63.6 mm (2.5 in) | |
| 25 years | 71.6 mm (2.8 in) | |
| 50 years | 77.1 mm (3.0 in) | Longer than the 42 years of record |
| 100 years | 82.1 mm (3.2 in) | Longer than the 42 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, 42 years of values from 1956 to 2009.
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: 87.4 mm (3.4 in) in 1981; 69.3 mm (2.7 in) in 1995; 64.8 mm (2.6 in) in 1979.
Download the Data
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).