Poncitlan Weather Records (MXN00014111)
Record envelope, standing records and threshold days for Poncitlan (MXN00014111), Mexico, with 64 years of record.
Key Facts for Poncitlan
- Poncitlan (MXN00014111) is a weather station in Mexico at 20.37 latitude and -102.92 longitude, 1,520 m (4,986 ft) above sea level.
- The station reports from 1940 to 2003, 64 years of record.
- 1,464 records set at Poncitlan still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Poncitlan tied a daily record high minimum temperature of 16.1 C (61.0 F) on 13 October 2003.
About the Station
- Location: Mexico, 20.37 latitude, -102.92 longitude.
- Elevation: 1,520 m (4,986 ft).
- Period of record: 1940 to 2003, 64 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 | 31.7 C (89.1 F) | -2.2 C (28.0 F) | n/a | n/a |
| Feb | 32.8 C (91.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Mar | 37.8 C (100.0 F) | 0.0 C (32.0 F) | n/a | n/a |
| Apr | 40.0 C (104.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| May | 38.9 C (102.0 F) | 5.6 C (42.1 F) | n/a | n/a |
| Jun | 38.9 C (102.0 F) | 8.9 C (48.0 F) | n/a | n/a |
| Jul | 34.4 C (93.9 F) | 10.0 C (50.0 F) | n/a | n/a |
| Aug | 32.8 C (91.0 F) | 10.0 C (50.0 F) | n/a | n/a |
| Sep | 36.7 C (98.1 F) | 5.0 C (41.0 F) | n/a | n/a |
| Oct | 32.2 C (90.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Nov | 32.8 C (91.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Dec | 32.8 C (91.0 F) | -1.1 C (30.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1940 | 15 |
| 1941 | 29 |
| 1942 | 9 |
| 1943 | 21 |
| 1944 | 51 |
| 1945 | 33 |
| 1946 | 70 |
| 1947 | 34 |
| 1948 | 34 |
| 1949 | 18 |
| 1950 | 56 |
| 1951 | 68 |
| 1952 | 22 |
| 1953 | 24 |
| 1954 | 15 |
| 1955 | 17 |
| 1956 | 8 |
| 1957 | 16 |
| 1958 | 26 |
| 1959 | 15 |
| 1960 | 24 |
| 1961 | 18 |
| 1962 | 9 |
| 1963 | 7 |
| 1964 | 16 |
| 1965 | 18 |
| 1966 | 20 |
| 1967 | 14 |
| 1968 | 14 |
| 1969 | 17 |
| 1970 | 17 |
| 1971 | 15 |
| 1972 | 10 |
| 1973 | 13 |
| 1974 | 10 |
| 1975 | 6 |
| 1976 | 13 |
| 1977 | 18 |
| 1978 | 14 |
| 1979 | 31 |
| 1980 | 19 |
| 1981 | 16 |
| 1982 | 31 |
| 1983 | 43 |
| 1984 | 19 |
| 1985 | 16 |
| 1986 | 41 |
| 1987 | 30 |
| 1988 | 19 |
| 1989 | 23 |
| 1990 | 6 |
| 1991 | 24 |
| 1992 | 47 |
| 1993 | 19 |
| 1994 | 11 |
| 1995 | 34 |
| 1996 | 17 |
| 1997 | 14 |
| 1998 | 30 |
| 1999 | 24 |
| 2000 | 32 |
| 2001 | 19 |
| 2002 | 24 |
| 2003 | 21 |
All-Time Record Progression
10 new records| Date | Kind | Detail |
|---|---|---|
| 1973-07-07 | Record daily precipitation | Record daily precipitation 109.0 mm (4.3 in) |
| 1981-01-17 | Record low maximum temperature | Record low maximum temperature 11.7 C (53.1 F) |
| 1981-01-18 | Record low maximum temperature | Record low maximum temperature 11.1 C (52.0 F) |
| 1983-01-23 | Record low minimum temperature | Record low minimum temperature -1.7 C (28.9 F) |
| 1985-01-06 | Record low minimum temperature | Record low minimum temperature -2.2 C (28.0 F) |
| 1992-01-16 | Record low maximum temperature | Record low maximum temperature 10.6 C (51.1 F) |
| 1992-06-20 | Record high minimum temperature | Record high minimum temperature 20.6 C (69.1 F) |
| 1992-06-23 | Record high minimum temperature | Record high minimum temperature 21.7 C (71.1 F) |
| 1995-06-04 | Record high minimum temperature | Record high minimum temperature 25.6 C (78.1 F) |
| 2003-07-07 | Record daily precipitation | Record daily precipitation 199.9 mm (7.9 in) |
Wettest Day of Each Month
Jul: 199.9 mm (7.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 54.4 mm (2.1 in) | 25 January 1992 |
| Feb | 29.5 mm (1.2 in) | 11 February 1966 |
| Mar | 46.5 mm (1.8 in) | 4 March 1968 |
| Apr | 29.0 mm (1.1 in) | 17 April 1959 |
| May | 58.4 mm (2.3 in) | 29 May 1977 |
| Jun | 93.0 mm (3.7 in) | 21 June 1993 |
| Jul | 199.9 mm (7.9 in) | 7 July 2003 |
| Aug | 66.8 mm (2.6 in) | 17 August 1995 |
| Sep | 68.8 mm (2.7 in) | 22 September 1954 |
| Oct | 51.6 mm (2.0 in) | 4 October 1967 |
| Nov | 63.8 mm (2.5 in) | 3 November 2002 |
| Dec | 69.9 mm (2.8 in) | 14 December 1992 |
Period of Record Coverage
1940 to 2003| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1940 | 293 | 80% | No |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 363 | 99% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 274 | 75% | No |
| 1948 | 303 | 83% | No |
| 1949 | 114 | 31% | No |
| 1950 | 352 | 96% | Yes |
| 1951 | 353 | 97% | Yes |
| 1952 | 361 | 99% | Yes |
| 1953 | 358 | 98% | Yes |
| 1954 | 359 | 98% | Yes |
| 1955 | 327 | 90% | No |
| 1956 | 326 | 89% | No |
| 1957 | 356 | 98% | Yes |
| 1958 | 359 | 98% | Yes |
| 1959 | 360 | 99% | Yes |
| 1960 | 311 | 85% | No |
| 1961 | 363 | 99% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 273 | 75% | No |
| 1964 | 366 | 100% | Yes |
| 1965 | 334 | 92% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 363 | 99% | Yes |
| 1968 | 363 | 99% | Yes |
| 1969 | 302 | 83% | No |
| 1970 | 334 | 92% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 364 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 364 | 99% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 359 | 98% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 360 | 99% | Yes |
| 1988 | 364 | 99% | Yes |
| 1989 | 364 | 100% | Yes |
| 1990 | 363 | 99% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 305 | 84% | No |
| 1998 | 335 | 92% | Yes |
| 1999 | 343 | 94% | Yes |
| 2000 | 334 | 91% | Yes |
| 2001 | 335 | 92% | Yes |
| 2002 | 360 | 99% | Yes |
| 2003 | 302 | 83% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 13 October 2003 | Poncitlan, MX | daily high min (Tie) | 16.1 C (61.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 11 October 2003 | Poncitlan, MX | daily high min (Tie) | 15.6 C (60.1 F) | tie | 62 years | 6 of 100 (Routine) |
| 7 October 2003 | Poncitlan, MX | monthly low max (Tie) | 18.9 C (66.0 F) | tie | 2 years | 4 of 100 (Routine) |
| 25 September 2003 | Poncitlan, MX | daily rain | 53.3 mm (2.1 in) | 19.5 mm (0.8 in) | 58 years | 41 of 100 (Notable) |
| 10 September 2003 | Poncitlan, MX | daily high min (Tie) | 17.8 C (64.0 F) | tie | 4 years | 1 of 100 (Routine) |
| 9 September 2003 | Poncitlan, MX | daily low max (Tie) | 21.7 C (71.1 F) | tie | 54 years | 5 of 100 (Routine) |
| 9 September 2003 | Poncitlan, MX | daily high min (Tie) | 17.2 C (63.0 F) | tie | 4 years | 1 of 100 (Routine) |
| 7 September 2003 | Poncitlan, MX | daily high min (Tie) | 16.7 C (62.1 F) | tie | 52 years | 5 of 100 (Routine) |
| 4 September 2003 | Poncitlan, MX | daily rain | 56.6 mm (2.2 in) | 21.8 mm (0.9 in) | 60 years | 44 of 100 (Notable) |
| 3 September 2003 | Poncitlan, MX | daily high min (Tie) | 17.2 C (63.0 F) | tie | 44 years | 4 of 100 (Routine) |
| 25 August 2003 | Poncitlan, MX | daily low max (Tie) | 25.0 C (77.0 F) | tie | 62 years | 6 of 100 (Routine) |
| 22 August 2003 | Poncitlan, MX | daily rain | 39.9 mm (1.6 in) | 20.1 mm (0.8 in) | 61 years | 42 of 100 (Notable) |
| 17 August 2003 | Poncitlan, MX | daily low max (Tie) | 25.0 C (77.0 F) | tie | 42 years | 4 of 100 (Routine) |
| 6 August 2003 | Poncitlan, MX | daily rain | 25.9 mm (1.0 in) | 3.0 mm (0.12 in) | 54 years | 24 of 100 (Routine) |
| 24 July 2003 | Poncitlan, MX | daily high max (Tie) | 29.4 C (84.9 F) | tie | 54 years | 5 of 100 (Routine) |
| 22 July 2003 | Poncitlan, MX | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 52 years | 26 of 100 (Routine) |
| 21 July 2003 | Poncitlan, MX | daily low min | 12.2 C (54.0 F) | 0.6 C (1.1 F) | 16 years | 16 of 100 (Routine) |
| 13 July 2003 | Poncitlan, MX | daily low min (Tie) | 12.8 C (55.0 F) | tie | 37 years | 4 of 100 (Routine) |
| 12 July 2003 | Poncitlan, MX | daily high max (Tie) | 30.0 C (86.0 F) | tie | 52 years | 5 of 100 (Routine) |
| 7 July 2003 | Poncitlan, MX | all-time rain | 199.9 mm (7.9 in) | 90.9 mm (3.6 in) | 29 years | 74 of 100 (Major) |
Climate Trend
41 complete years, 1941 to 2002| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1941 | 19.5 C | -0.04 C |
| 1942 | 20.5 C | +0.97 C |
| 1943 | 20.5 C | +1.01 C |
| 1944 | 20.8 C | +1.26 C |
| 1945 | 21.2 C | +1.73 C |
| 1946 | 21.5 C | +1.96 C |
| 1950 | 19.7 C | +0.16 C |
| 1951 | 20.1 C | +0.60 C |
| 1952 | 20.0 C | +0.47 C |
| 1953 | 19.5 C | +0.01 C |
| 1954 | 19.5 C | +0.03 C |
| 1957 | 19.8 C | +0.31 C |
| 1958 | 19.7 C | +0.20 C |
| 1959 | 19.6 C | +0.11 C |
| 1961 | 19.3 C | -0.16 C |
| 1962 | 19.7 C | +0.21 C |
| 1964 | 19.5 C | +0.03 C |
| 1966 | 19.1 C | -0.37 C |
| 1967 | 19.1 C | -0.44 C |
| 1968 | 19.1 C | -0.41 C |
| 1971 | 19.3 C | -0.16 C |
| 1972 | 19.6 C | +0.11 C |
| 1973 | 19.2 C | -0.29 C |
| 1974 | 19.1 C | -0.42 C |
| 1975 | 18.9 C | -0.59 C |
| 1976 | 19.2 C | -0.35 C |
| 1977 | 19.5 C | -0.01 C |
| 1978 | 19.3 C | -0.20 C |
| 1979 | 19.4 C | -0.09 C |
| 1980 | 19.7 C | +0.20 C |
| 1981 | 19.1 C | -0.37 C |
| 1982 | 19.7 C | +0.17 C |
| 1983 | 18.8 C | -0.72 C |
| 1984 | 18.6 C | -0.88 C |
| 1985 | 18.9 C | -0.62 C |
| 1986 | 18.6 C | -0.86 C |
| 1987 | 18.7 C | -0.85 C |
| 1989 | 18.6 C | -0.89 C |
| 1991 | 18.9 C | -0.60 C |
| 1993 | 18.8 C | -0.68 C |
| 2002 | 19.9 C | +0.43 C |
The annual mean temperature here has fallen by 0.3 C (0.2 to 0.4) per decade over 1941 to 2002. In Fahrenheit: 0.5 F (0.4 to 0.7) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.3 C (-0.4 to -0.2) per decade | -0.5 F (-0.7 to -0.4) per decade | 1941 to 2002 | 41 | Fall |
| Mean daily maximum | 0.02 C (-0.10 to 0.14) per decade | 0.04 F (-0.18 to 0.26) per decade | 1941 to 2002 | 41 | Not clearly different from zero |
| Mean daily minimum | -0.6 C (-0.8 to -0.4) per decade | -1.1 F (-1.4 to -0.8) per decade | 1941 to 2002 | 41 | Fall |
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
1940 to 2003| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.0 C (104.0 F) | 1966 | 35.0 C (95.0 F) | 64 |
| Coldest night (TNn) | -2.2 C (28.0 F) | 1985 | 0.6 C (33.1 F) | 64 |
| Wettest day (Rx1day) | 199.9 mm (7.9 in) | 2003 | 52.8 mm (2.1 in) | 64 |
| Wettest five days (Rx5day) | 267.5 mm (10.5 in) | 2003 | 102.7 mm (4.0 in) | 64 |
| Longest dry spell (CDD) | 158 days | 1991 | 97 days | 64 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1940 | 35.0 C (95.0 F) |
| 1941 | 35.0 C (95.0 F) |
| 1942 | 32.2 C (90.0 F) |
| 1943 | 28.9 C (84.0 F) |
| 1944 | 28.9 C (84.0 F) |
| 1945 | 29.4 C (84.9 F) |
| 1946 | 29.4 C (84.9 F) |
| 1947 | 28.9 C (84.0 F) |
| 1948 | 36.7 C (98.1 F) |
| 1949 | 31.7 C (89.1 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 35.0 C (95.0 F) |
| 1953 | 35.0 C (95.0 F) |
| 1954 | 34.4 C (93.9 F) |
| 1955 | 35.0 C (95.0 F) |
| 1956 | 34.4 C (93.9 F) |
| 1957 | 36.1 C (97.0 F) |
| 1958 | 35.0 C (95.0 F) |
| 1959 | 32.2 C (90.0 F) |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 35.0 C (95.0 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 35.6 C (96.1 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 36.1 C (97.0 F) |
| 1968 | 34.4 C (93.9 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 35.0 C (95.0 F) |
| 1971 | 35.0 C (95.0 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 33.9 C (93.0 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 38.3 C (100.9 F) |
| 1979 | 33.9 C (93.0 F) |
| 1980 | 35.0 C (95.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 35.6 C (96.1 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 33.9 C (93.0 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 36.1 C (97.0 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 35.0 C (95.0 F) |
| 1989 | 35.0 C (95.0 F) |
| 1990 | 35.0 C (95.0 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 33.9 C (93.0 F) |
| 1993 | 35.0 C (95.0 F) |
| 1994 | 35.6 C (96.1 F) |
| 1995 | 35.0 C (95.0 F) |
| 1996 | 33.9 C (93.0 F) |
| 1997 | 32.8 C (91.0 F) |
| 1998 | 36.1 C (97.0 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 37.8 C (100.0 F) |
| 2001 | 39.4 C (102.9 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 38.3 C (100.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1940 | 5.0 C (41.0 F) |
| 1941 | 6.7 C (44.1 F) |
| 1942 | 10.0 C (50.0 F) |
| 1943 | 10.0 C (50.0 F) |
| 1944 | 10.0 C (50.0 F) |
| 1945 | 10.0 C (50.0 F) |
| 1946 | 11.1 C (52.0 F) |
| 1947 | 12.2 C (54.0 F) |
| 1948 | 10.0 C (50.0 F) |
| 1949 | 1.7 C (35.1 F) |
| 1950 | 0.0 C (32.0 F) |
| 1951 | 0.6 C (33.1 F) |
| 1952 | 1.7 C (35.1 F) |
| 1953 | 0.0 C (32.0 F) |
| 1954 | 0.6 C (33.1 F) |
| 1955 | -0.6 C (30.9 F) |
| 1956 | 1.7 C (35.1 F) |
| 1957 | 0.6 C (33.1 F) |
| 1958 | 1.7 C (35.1 F) |
| 1959 | 1.1 C (34.0 F) |
| 1960 | 0.6 C (33.1 F) |
| 1961 | 0.0 C (32.0 F) |
| 1962 | 0.6 C (33.1 F) |
| 1963 | 1.7 C (35.1 F) |
| 1964 | 1.1 C (34.0 F) |
| 1965 | 0.6 C (33.1 F) |
| 1966 | 0.0 C (32.0 F) |
| 1967 | -1.1 C (30.0 F) |
| 1968 | 2.2 C (36.0 F) |
| 1969 | 1.1 C (34.0 F) |
| 1970 | 0.0 C (32.0 F) |
| 1971 | 0.0 C (32.0 F) |
| 1972 | 0.6 C (33.1 F) |
| 1973 | 0.0 C (32.0 F) |
| 1974 | 2.8 C (37.0 F) |
| 1975 | 0.6 C (33.1 F) |
| 1976 | 0.0 C (32.0 F) |
| 1977 | 1.7 C (35.1 F) |
| 1978 | 0.6 C (33.1 F) |
| 1979 | 0.0 C (32.0 F) |
| 1980 | 0.0 C (32.0 F) |
| 1981 | 0.6 C (33.1 F) |
| 1982 | 0.6 C (33.1 F) |
| 1983 | -1.7 C (28.9 F) |
| 1984 | 1.7 C (35.1 F) |
| 1985 | -2.2 C (28.0 F) |
| 1986 | -2.2 C (28.0 F) |
| 1987 | 0.6 C (33.1 F) |
| 1988 | 0.0 C (32.0 F) |
| 1989 | 0.0 C (32.0 F) |
| 1990 | 0.6 C (33.1 F) |
| 1991 | 0.6 C (33.1 F) |
| 1992 | 0.0 C (32.0 F) |
| 1993 | 0.0 C (32.0 F) |
| 1994 | 0.6 C (33.1 F) |
| 1995 | 1.7 C (35.1 F) |
| 1996 | 0.0 C (32.0 F) |
| 1997 | 0.6 C (33.1 F) |
| 1998 | -1.7 C (28.9 F) |
| 1999 | -1.1 C (30.0 F) |
| 2000 | -1.1 C (30.0 F) |
| 2001 | 0.0 C (32.0 F) |
| 2002 | -1.1 C (30.0 F) |
| 2003 | 0.0 C (32.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1940 | 41.9 mm (1.6 in) |
| 1941 | 98.8 mm (3.9 in) |
| 1942 | 64.8 mm (2.6 in) |
| 1943 | 48.8 mm (1.9 in) |
| 1944 | 52.8 mm (2.1 in) |
| 1945 | 23.9 mm (0.9 in) |
| 1946 | 46.0 mm (1.8 in) |
| 1947 | 19.8 mm (0.8 in) |
| 1948 | 42.9 mm (1.7 in) |
| 1949 | 23.9 mm (0.9 in) |
| 1950 | 40.9 mm (1.6 in) |
| 1951 | 82.8 mm (3.3 in) |
| 1952 | 58.9 mm (2.3 in) |
| 1953 | 69.9 mm (2.8 in) |
| 1954 | 68.8 mm (2.7 in) |
| 1955 | 56.9 mm (2.2 in) |
| 1956 | 31.0 mm (1.2 in) |
| 1957 | 42.9 mm (1.7 in) |
| 1958 | 41.9 mm (1.6 in) |
| 1959 | 37.8 mm (1.5 in) |
| 1960 | 29.5 mm (1.2 in) |
| 1961 | 41.9 mm (1.6 in) |
| 1962 | 61.2 mm (2.4 in) |
| 1963 | 48.0 mm (1.9 in) |
| 1964 | 83.3 mm (3.3 in) |
| 1965 | 45.5 mm (1.8 in) |
| 1966 | 55.6 mm (2.2 in) |
| 1967 | 54.4 mm (2.1 in) |
| 1968 | 58.4 mm (2.3 in) |
| 1969 | 39.9 mm (1.6 in) |
| 1970 | 62.5 mm (2.5 in) |
| 1971 | 52.8 mm (2.1 in) |
| 1972 | 49.8 mm (2.0 in) |
| 1973 | 109.0 mm (4.3 in) |
| 1974 | 93.0 mm (3.7 in) |
| 1975 | 52.8 mm (2.1 in) |
| 1976 | 64.8 mm (2.6 in) |
| 1977 | 58.4 mm (2.3 in) |
| 1978 | 51.3 mm (2.0 in) |
| 1979 | 24.9 mm (1.0 in) |
| 1980 | 39.9 mm (1.6 in) |
| 1981 | 62.0 mm (2.4 in) |
| 1982 | 66.3 mm (2.6 in) |
| 1983 | 77.0 mm (3.0 in) |
| 1984 | 38.1 mm (1.5 in) |
| 1985 | 39.4 mm (1.6 in) |
| 1986 | 57.9 mm (2.3 in) |
| 1987 | 76.2 mm (3.0 in) |
| 1988 | 40.9 mm (1.6 in) |
| 1989 | 39.4 mm (1.6 in) |
| 1990 | 61.0 mm (2.4 in) |
| 1991 | 59.9 mm (2.4 in) |
| 1992 | 71.9 mm (2.8 in) |
| 1993 | 93.0 mm (3.7 in) |
| 1994 | 55.4 mm (2.2 in) |
| 1995 | 66.8 mm (2.6 in) |
| 1996 | 49.8 mm (2.0 in) |
| 1997 | 43.9 mm (1.7 in) |
| 1998 | 35.1 mm (1.4 in) |
| 1999 | 48.8 mm (1.9 in) |
| 2000 | 45.0 mm (1.8 in) |
| 2001 | 55.1 mm (2.2 in) |
| 2002 | 63.8 mm (2.5 in) |
| 2003 | 199.9 mm (7.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1940 | 83.9 mm (3.3 in) |
| 1941 | 224.8 mm (8.9 in) |
| 1942 | 102.7 mm (4.0 in) |
| 1943 | 95.6 mm (3.8 in) |
| 1944 | 109.5 mm (4.3 in) |
| 1945 | 56.5 mm (2.2 in) |
| 1946 | 82.5 mm (3.2 in) |
| 1947 | 45.8 mm (1.8 in) |
| 1948 | 66.5 mm (2.6 in) |
| 1949 | 40.1 mm (1.6 in) |
| 1950 | 69.3 mm (2.7 in) |
| 1951 | 114.0 mm (4.5 in) |
| 1952 | 113.9 mm (4.5 in) |
| 1953 | 126.0 mm (5.0 in) |
| 1954 | 95.5 mm (3.8 in) |
| 1955 | 103.3 mm (4.1 in) |
| 1956 | 53.6 mm (2.1 in) |
| 1957 | 67.5 mm (2.7 in) |
| 1958 | 103.6 mm (4.1 in) |
| 1959 | 101.0 mm (4.0 in) |
| 1960 | 116.9 mm (4.6 in) |
| 1961 | 105.4 mm (4.1 in) |
| 1962 | 127.0 mm (5.0 in) |
| 1963 | 83.8 mm (3.3 in) |
| 1964 | 124.7 mm (4.9 in) |
| 1965 | 102.4 mm (4.0 in) |
| 1966 | 81.2 mm (3.2 in) |
| 1967 | 154.5 mm (6.1 in) |
| 1968 | 70.9 mm (2.8 in) |
| 1969 | 102.7 mm (4.0 in) |
| 1970 | 150.4 mm (5.9 in) |
| 1971 | 157.2 mm (6.2 in) |
| 1972 | 148.1 mm (5.8 in) |
| 1973 | 165.4 mm (6.5 in) |
| 1974 | 193.3 mm (7.6 in) |
| 1975 | 90.7 mm (3.6 in) |
| 1976 | 146.6 mm (5.8 in) |
| 1977 | 139.2 mm (5.5 in) |
| 1978 | 83.6 mm (3.3 in) |
| 1979 | 58.0 mm (2.3 in) |
| 1980 | 112.3 mm (4.4 in) |
| 1981 | 93.5 mm (3.7 in) |
| 1982 | 88.2 mm (3.5 in) |
| 1983 | 148.6 mm (5.9 in) |
| 1984 | 103.2 mm (4.1 in) |
| 1985 | 125.0 mm (4.9 in) |
| 1986 | 92.0 mm (3.6 in) |
| 1987 | 119.3 mm (4.7 in) |
| 1988 | 88.9 mm (3.5 in) |
| 1989 | 86.6 mm (3.4 in) |
| 1990 | 131.1 mm (5.2 in) |
| 1991 | 100.4 mm (4.0 in) |
| 1992 | 109.8 mm (4.3 in) |
| 1993 | 148.9 mm (5.9 in) |
| 1994 | 87.7 mm (3.5 in) |
| 1995 | 110.0 mm (4.3 in) |
| 1996 | 86.7 mm (3.4 in) |
| 1997 | 109.8 mm (4.3 in) |
| 1998 | 82.6 mm (3.3 in) |
| 1999 | 191.6 mm (7.5 in) |
| 2000 | 80.1 mm (3.2 in) |
| 2001 | 89.2 mm (3.5 in) |
| 2002 | 77.7 mm (3.1 in) |
| 2003 | 267.5 mm (10.5 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1940 | 93 days |
| 1941 | 45 days |
| 1942 | 97 days |
| 1943 | 120 days |
| 1944 | 135 days |
| 1945 | 155 days |
| 1946 | 145 days |
| 1947 | 107 days |
| 1948 | 75 days |
| 1949 | 80 days |
| 1950 | 144 days |
| 1951 | 75 days |
| 1952 | 55 days |
| 1953 | 115 days |
| 1954 | 96 days |
| 1955 | 76 days |
| 1956 | 100 days |
| 1957 | 126 days |
| 1958 | 132 days |
| 1959 | 64 days |
| 1960 | 61 days |
| 1961 | 115 days |
| 1962 | 75 days |
| 1963 | 102 days |
| 1964 | 95 days |
| 1965 | 67 days |
| 1966 | 48 days |
| 1967 | 122 days |
| 1968 | 75 days |
| 1969 | 116 days |
| 1970 | 98 days |
| 1971 | 133 days |
| 1972 | 120 days |
| 1973 | 64 days |
| 1974 | 90 days |
| 1975 | 124 days |
| 1976 | 58 days |
| 1977 | 88 days |
| 1978 | 89 days |
| 1979 | 110 days |
| 1980 | 78 days |
| 1981 | 49 days |
| 1982 | 78 days |
| 1983 | 125 days |
| 1984 | 89 days |
| 1985 | 134 days |
| 1986 | 139 days |
| 1987 | 79 days |
| 1988 | 97 days |
| 1989 | 127 days |
| 1990 | 61 days |
| 1991 | 158 days |
| 1992 | 101 days |
| 1993 | 79 days |
| 1994 | 142 days |
| 1995 | 128 days |
| 1996 | 99 days |
| 1997 | 65 days |
| 1998 | 69 days |
| 1999 | 158 days |
| 2000 | 148 days |
| 2001 | 64 days |
| 2002 | 87 days |
| 2003 | 107 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
54 years, 1941 to 2002A day with at least 54.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 110.9 mm (4.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 54.4 mm (2.1 in) | |
| 5 years | 70.4 mm (2.8 in) | |
| 10 years | 80.6 mm (3.2 in) | |
| 25 years | 93.1 mm (3.7 in) | |
| 50 years | 102.2 mm (4.0 in) | |
| 100 years | 110.9 mm (4.4 in) | Longer than the 54 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, 54 years of values from 1941 to 2002.
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: 109.0 mm (4.3 in) in 1973; 98.8 mm (3.9 in) in 1941; 93.0 mm (3.7 in) in 1974.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Poncitlan, at 1951. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1951 ran 0.4 C (0.7 F) higher than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1951 | +0.4 | +0.7 | possible | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
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).