Hagerstown Weather Records (USC00183975)
Record envelope, standing records and threshold days for Hagerstown (USC00183975), Maryland, United States, with 99 years of record.
Key Facts for Hagerstown
- Hagerstown (USC00183975) is a weather station in Maryland, United States at 39.65 latitude and -77.73 longitude, 201 m (660 ft) above sea level.
- The station reports from 1895 to 1993, 99 years of record.
- 1,464 records set at Hagerstown still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Hagerstown set a daily record precipitation of 19.3 mm (0.8 in) on 12 October 1993.
About the Station
- Location: Maryland, United States, 39.65 latitude, -77.73 longitude.
- Elevation: 201 m (660 ft).
- Period of record: 1895 to 1993, 99 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
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 | 25.6 C (78.1 F) | -27.2 C (-17.0 F) | n/a | n/a |
| Feb | 27.2 C (81.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Mar | 32.2 C (90.0 F) | -17.8 C (0.0 F) | n/a | n/a |
| Apr | 35.0 C (95.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| May | 37.2 C (99.0 F) | -1.1 C (30.0 F) | n/a | n/a |
| Jun | 37.2 C (99.0 F) | 2.8 C (37.0 F) | n/a | n/a |
| Jul | 40.6 C (105.1 F) | 5.6 C (42.1 F) | n/a | n/a |
| Aug | 39.4 C (102.9 F) | 4.4 C (39.9 F) | n/a | n/a |
| Sep | 37.2 C (99.0 F) | -1.7 C (28.9 F) | n/a | n/a |
| Oct | 33.9 C (93.0 F) | -7.8 C (18.0 F) | n/a | n/a |
| Nov | 28.9 C (84.0 F) | -14.4 C (6.1 F) | n/a | n/a |
| Dec | 25.6 C (78.1 F) | -21.1 C (-6.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1895 | 33 |
| 1896 | 45 |
| 1897 | 16 |
| 1898 | 21 |
| 1899 | 21 |
| 1900 | 50 |
| 1901 | 25 |
| 1947 | 9 |
| 1948 | 29 |
| 1949 | 35 |
| 1950 | 34 |
| 1951 | 34 |
| 1952 | 28 |
| 1953 | 21 |
| 1954 | 30 |
| 1955 | 24 |
| 1956 | 30 |
| 1957 | 29 |
| 1958 | 25 |
| 1959 | 28 |
| 1960 | 44 |
| 1961 | 31 |
| 1962 | 13 |
| 1963 | 30 |
| 1964 | 34 |
| 1965 | 23 |
| 1966 | 25 |
| 1967 | 35 |
| 1968 | 24 |
| 1969 | 22 |
| 1970 | 36 |
| 1971 | 14 |
| 1972 | 24 |
| 1973 | 19 |
| 1974 | 37 |
| 1975 | 24 |
| 1976 | 31 |
| 1977 | 34 |
| 1978 | 18 |
| 1979 | 27 |
| 1980 | 16 |
| 1981 | 17 |
| 1982 | 25 |
| 1983 | 26 |
| 1984 | 36 |
| 1985 | 23 |
| 1986 | 26 |
| 1987 | 19 |
| 1988 | 33 |
| 1989 | 29 |
| 1990 | 31 |
| 1991 | 37 |
| 1992 | 12 |
| 1993 | 22 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1977-01-17 | Record low minimum temperature | Record low minimum temperature -27.2 C (-17.0 F) |
| 1983-02-11 | Record daily snowfall | Record daily snowfall 53.3 cm (21.0 in) |
| 1983-02-11 | Record snow depth | Record snow depth 53.3 cm (21.0 in) |
| 1983-02-12 | Record snow depth | Record snow depth 66.0 cm (26.0 in) |
| 1989-07-11 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
| 1991-09-19 | Record daily precipitation | Record daily precipitation 179.6 mm (7.1 in) |
Wettest Day of Each Month
Sep: 179.6 mm (7.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 57.2 mm (2.3 in) | 1 January 1948 |
| Feb | 74.9 mm (2.9 in) | 14 February 1984 |
| Mar | 78.7 mm (3.1 in) | 29 March 1984 |
| Apr | 87.6 mm (3.4 in) | 22 April 1992 |
| May | 63.5 mm (2.5 in) | 22 May 1901 |
| Jun | 80.3 mm (3.2 in) | 22 June 1972 |
| Jul | 122.2 mm (4.8 in) | 20 July 1956 |
| Aug | 89.7 mm (3.5 in) | 11 August 1984 |
| Sep | 179.6 mm (7.1 in) | 19 September 1991 |
| Oct | 112.0 mm (4.4 in) | 13 October 1990 |
| Nov | 64.3 mm (2.5 in) | 21 November 1952 |
| Dec | 62.2 mm (2.4 in) | 11 December 1992 |
Period of Record Coverage
1895 to 1993| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1895 | 181 | 50% | No |
| 1896 | 364 | 99% | Yes |
| 1897 | 350 | 96% | Yes |
| 1898 | 250 | 68% | No |
| 1899 | 201 | 55% | No |
| 1900 | 365 | 100% | Yes |
| 1901 | 241 | 66% | No |
| 1947 | 92 | 25% | No |
| 1948 | 365 | 100% | Yes |
| 1949 | 363 | 99% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 363 | 99% | Yes |
| 1954 | 360 | 99% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 334 | 91% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 359 | 98% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 364 | 100% | Yes |
| 1962 | 364 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 364 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 361 | 99% | Yes |
| 1986 | 338 | 93% | Yes |
| 1987 | 294 | 81% | No |
| 1988 | 302 | 83% | No |
| 1989 | 312 | 85% | No |
| 1990 | 319 | 87% | No |
| 1991 | 332 | 91% | Yes |
| 1992 | 314 | 86% | No |
| 1993 | 282 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 12 October 1993 | Hagerstown, US | daily rain | 19.3 mm (0.8 in) | 5.3 mm (0.21 in) | 2 years | 12 of 100 (Routine) |
| 11 October 1993 | Hagerstown, US | daily low max | 11.7 C (53.1 F) | 0.5 C (0.9 F) | 96 years | 38 of 100 (Notable) |
| 2 October 1993 | Hagerstown, US | daily low min (Tie) | 1.7 C (35.1 F) | tie | 46 years | 5 of 100 (Routine) |
| 1 October 1993 | Hagerstown, US | daily low max (Tie) | 13.9 C (57.0 F) | tie | 27 years | 4 of 100 (Routine) |
| 18 September 1993 | Hagerstown, US | daily low max (Tie) | 17.2 C (63.0 F) | tie | 3 years | 2 of 100 (Routine) |
| 17 September 1993 | Hagerstown, US | daily low max | 16.1 C (61.0 F) | 2.2 C (4.0 F) | 34 years | 23 of 100 (Routine) |
| 12 September 1993 | Hagerstown, US | daily low max (Tie) | 20.6 C (69.1 F) | tie | 8 years | 2 of 100 (Routine) |
| 12 August 1993 | Hagerstown, US | daily rain | 33.5 mm (1.3 in) | 3.5 mm (0.14 in) | 42 years | 23 of 100 (Routine) |
| 7 August 1993 | Hagerstown, US | daily low max | 19.4 C (66.9 F) | 2.8 C (5.0 F) | 42 years | 29 of 100 (Routine) |
| 29 July 1993 | Hagerstown, US | daily high max | 38.3 C (100.9 F) | 1.1 C (2.0 F) | 92 years | 39 of 100 (Notable) |
| 12 July 1993 | Hagerstown, US | daily high max | 35.6 C (96.1 F) | 2.3 C (4.1 F) | 92 years | 43 of 100 (Notable) |
| 11 July 1993 | Hagerstown, US | daily high max | 36.7 C (98.1 F) | 1.1 C (2.0 F) | 4 years | 13 of 100 (Routine) |
| 6 July 1993 | Hagerstown, US | daily high min (Tie) | 22.8 C (73.0 F) | tie | 92 years | 9 of 100 (Routine) |
| 19 June 1993 | Hagerstown, US | daily high max (Tie) | 33.9 C (93.0 F) | tie | 36 years | 4 of 100 (Routine) |
| 21 May 1993 | Hagerstown, US | daily low min (Tie) | 4.4 C (39.9 F) | tie | 43 years | 5 of 100 (Routine) |
| 12 May 1993 | Hagerstown, US | daily high max | 32.8 C (91.0 F) | 0.6 C (1.1 F) | 96 years | 39 of 100 (Notable) |
| 28 April 1993 | Hagerstown, US | daily low min | 0.6 C (33.1 F) | 1.1 C (2.0 F) | 27 years | 19 of 100 (Routine) |
| 27 April 1993 | Hagerstown, US | daily rain | 29.2 mm (1.1 in) | 7.9 mm (0.31 in) | 20 years | 23 of 100 (Routine) |
| 27 April 1993 | Hagerstown, US | daily low min | -0.6 C (30.9 F) | 1.7 C (3.1 F) | 22 years | 18 of 100 (Routine) |
| 24 April 1993 | Hagerstown, US | daily low min (Tie) | -0.6 C (30.9 F) | tie | 7 years | 2 of 100 (Routine) |
Climate Trend
40 complete years, 1896 to 1992| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1896 | 12.7 C | +0.57 C |
| 1900 | 13.1 C | +1.00 C |
| 1948 | 12.1 C | +0.04 C |
| 1949 | 13.3 C | +1.25 C |
| 1950 | 11.8 C | -0.27 C |
| 1951 | 12.2 C | +0.13 C |
| 1952 | 12.6 C | +0.53 C |
| 1953 | 13.2 C | +1.13 C |
| 1954 | 12.3 C | +0.18 C |
| 1955 | 12.0 C | -0.09 C |
| 1957 | 12.5 C | +0.36 C |
| 1958 | 11.1 C | -0.99 C |
| 1959 | 12.4 C | +0.34 C |
| 1961 | 11.0 C | -1.11 C |
| 1962 | 11.6 C | -0.49 C |
| 1963 | 11.7 C | -0.35 C |
| 1964 | 12.3 C | +0.23 C |
| 1965 | 12.3 C | +0.25 C |
| 1966 | 11.9 C | -0.23 C |
| 1967 | 11.5 C | -0.59 C |
| 1968 | 12.0 C | -0.05 C |
| 1969 | 11.8 C | -0.29 C |
| 1970 | 12.1 C | +0.03 C |
| 1971 | 12.1 C | 0.00 C |
| 1972 | 11.6 C | -0.45 C |
| 1973 | 12.8 C | +0.74 C |
| 1974 | 12.5 C | +0.40 C |
| 1975 | 12.3 C | +0.21 C |
| 1976 | 11.3 C | -0.75 C |
| 1977 | 11.7 C | -0.35 C |
| 1978 | 11.2 C | -0.89 C |
| 1979 | 11.7 C | -0.42 C |
| 1980 | 11.9 C | -0.15 C |
| 1981 | 11.8 C | -0.31 C |
| 1982 | 12.2 C | +0.07 C |
| 1983 | 12.4 C | +0.32 C |
| 1984 | 12.3 C | +0.23 C |
| 1985 | 12.7 C | +0.56 C |
| 1988 | 12.3 C | +0.18 C |
| 1992 | 11.2 C | -0.85 C |
The annual mean temperature here has fallen by 0.11 C (0.02 to 0.20) per decade over 1896 to 1992. In Fahrenheit: 0.20 F (0.04 to 0.35) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.11 C (-0.20 to -0.02) per decade | -0.20 F (-0.35 to -0.04) per decade | 1896 to 1992 | 40 | Fall |
| Mean daily maximum | -0.1 C (-0.2 to -0.1) per decade | -0.3 F (-0.4 to -0.1) per decade | 1896 to 1992 | 40 | Fall |
| Mean daily minimum | -0.07 C (-0.18 to 0.03) per decade | -0.1 F (-0.3 to 0.1) per decade | 1896 to 1992 | 40 | 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
1895 to 1993| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.6 C (105.1 F) | 1900 | 36.1 C (97.0 F) | 54 |
| Coldest night (TNn) | -27.2 C (-17.0 F) | 1977 | -17.2 C (1.0 F) | 54 |
| Wettest day (Rx1day) | 179.6 mm (7.1 in) | 1991 | 55.3 mm (2.2 in) | 54 |
| Wettest five days (Rx5day) | 188.2 mm (7.4 in) | 1975 | 77.4 mm (3.0 in) | 54 |
| Longest dry spell (CDD) | 29 days | 1952 | 18 days | 54 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1895 | 37.8 C (100.0 F) |
| 1896 | 36.1 C (97.0 F) |
| 1897 | 36.1 C (97.0 F) |
| 1898 | 33.3 C (91.9 F) |
| 1899 | 29.4 C (84.9 F) |
| 1900 | 40.6 C (105.1 F) |
| 1901 | 38.9 C (102.0 F) |
| 1947 | 31.1 C (88.0 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 37.8 C (100.0 F) |
| 1950 | 35.6 C (96.1 F) |
| 1951 | 35.0 C (95.0 F) |
| 1952 | 36.1 C (97.0 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 40.0 C (104.0 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 35.6 C (96.1 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 37.2 C (99.0 F) |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 36.1 C (97.0 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 36.7 C (98.1 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 33.9 C (93.0 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 36.7 C (98.1 F) |
| 1970 | 34.4 C (93.9 F) |
| 1971 | 34.4 C (93.9 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 35.6 C (96.1 F) |
| 1974 | 33.3 C (91.9 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 33.3 C (91.9 F) |
| 1977 | 38.3 C (100.9 F) |
| 1978 | 35.0 C (95.0 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 34.4 C (93.9 F) |
| 1983 | 39.4 C (102.9 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 35.6 C (96.1 F) |
| 1986 | 37.2 C (99.0 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 34.4 C (93.9 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 38.3 C (100.9 F) |
| 1992 | 35.0 C (95.0 F) |
| 1993 | 38.3 C (100.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1895 | -17.2 C (1.0 F) |
| 1896 | -17.2 C (1.0 F) |
| 1897 | -15.6 C (3.9 F) |
| 1898 | -16.1 C (3.0 F) |
| 1899 | -25.6 C (-14.1 F) |
| 1900 | -17.8 C (0.0 F) |
| 1901 | -14.4 C (6.1 F) |
| 1947 | -9.4 C (15.1 F) |
| 1948 | -20.6 C (-5.1 F) |
| 1949 | -12.2 C (10.0 F) |
| 1950 | -17.2 C (1.0 F) |
| 1951 | -16.7 C (1.9 F) |
| 1952 | -13.9 C (7.0 F) |
| 1953 | -10.0 C (14.0 F) |
| 1954 | -15.0 C (5.0 F) |
| 1955 | -17.8 C (0.0 F) |
| 1956 | -11.7 C (10.9 F) |
| 1957 | -17.8 C (0.0 F) |
| 1958 | -17.2 C (1.0 F) |
| 1959 | -15.0 C (5.0 F) |
| 1960 | -20.0 C (-4.0 F) |
| 1961 | -22.8 C (-9.0 F) |
| 1962 | -17.8 C (0.0 F) |
| 1963 | -20.6 C (-5.1 F) |
| 1964 | -16.7 C (1.9 F) |
| 1965 | -17.2 C (1.0 F) |
| 1966 | -17.8 C (0.0 F) |
| 1967 | -17.2 C (1.0 F) |
| 1968 | -21.7 C (-7.1 F) |
| 1969 | -15.6 C (3.9 F) |
| 1970 | -20.0 C (-4.0 F) |
| 1971 | -17.2 C (1.0 F) |
| 1972 | -20.0 C (-4.0 F) |
| 1973 | -15.6 C (3.9 F) |
| 1974 | -12.2 C (10.0 F) |
| 1975 | -16.7 C (1.9 F) |
| 1976 | -17.2 C (1.0 F) |
| 1977 | -27.2 C (-17.0 F) |
| 1978 | -17.8 C (0.0 F) |
| 1979 | -20.6 C (-5.1 F) |
| 1980 | -15.6 C (3.9 F) |
| 1981 | -17.8 C (0.0 F) |
| 1982 | -24.4 C (-11.9 F) |
| 1983 | -21.1 C (-6.0 F) |
| 1984 | -22.2 C (-8.0 F) |
| 1985 | -24.4 C (-11.9 F) |
| 1986 | -15.0 C (5.0 F) |
| 1987 | -18.3 C (-0.9 F) |
| 1988 | -17.8 C (0.0 F) |
| 1989 | -18.9 C (-2.0 F) |
| 1990 | -13.9 C (7.0 F) |
| 1991 | -11.7 C (10.9 F) |
| 1992 | -13.3 C (8.1 F) |
| 1993 | -17.2 C (1.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1895 | 46.7 mm (1.8 in) |
| 1896 | 55.9 mm (2.2 in) |
| 1897 | 53.8 mm (2.1 in) |
| 1898 | 34.3 mm (1.4 in) |
| 1899 | 34.8 mm (1.4 in) |
| 1900 | 54.6 mm (2.1 in) |
| 1901 | 65.0 mm (2.6 in) |
| 1947 | 20.1 mm (0.8 in) |
| 1948 | 57.2 mm (2.3 in) |
| 1949 | 86.4 mm (3.4 in) |
| 1950 | 52.1 mm (2.1 in) |
| 1951 | 51.1 mm (2.0 in) |
| 1952 | 74.2 mm (2.9 in) |
| 1953 | 48.5 mm (1.9 in) |
| 1954 | 47.5 mm (1.9 in) |
| 1955 | 70.4 mm (2.8 in) |
| 1956 | 122.2 mm (4.8 in) |
| 1957 | 42.2 mm (1.7 in) |
| 1958 | 41.7 mm (1.6 in) |
| 1959 | 49.8 mm (2.0 in) |
| 1960 | 46.5 mm (1.8 in) |
| 1961 | 41.9 mm (1.6 in) |
| 1962 | 60.2 mm (2.4 in) |
| 1963 | 48.0 mm (1.9 in) |
| 1964 | 38.6 mm (1.5 in) |
| 1965 | 62.2 mm (2.4 in) |
| 1966 | 110.0 mm (4.3 in) |
| 1967 | 57.2 mm (2.3 in) |
| 1968 | 57.9 mm (2.3 in) |
| 1969 | 57.2 mm (2.3 in) |
| 1970 | 70.1 mm (2.8 in) |
| 1971 | 85.6 mm (3.4 in) |
| 1972 | 80.3 mm (3.2 in) |
| 1973 | 89.9 mm (3.5 in) |
| 1974 | 56.6 mm (2.2 in) |
| 1975 | 79.5 mm (3.1 in) |
| 1976 | 95.3 mm (3.8 in) |
| 1977 | 39.6 mm (1.6 in) |
| 1978 | 53.8 mm (2.1 in) |
| 1979 | 43.2 mm (1.7 in) |
| 1980 | 54.6 mm (2.1 in) |
| 1981 | 45.2 mm (1.8 in) |
| 1982 | 46.5 mm (1.8 in) |
| 1983 | 63.5 mm (2.5 in) |
| 1984 | 89.7 mm (3.5 in) |
| 1985 | 41.7 mm (1.6 in) |
| 1986 | 48.8 mm (1.9 in) |
| 1987 | 33.8 mm (1.3 in) |
| 1988 | 83.6 mm (3.3 in) |
| 1989 | 59.4 mm (2.3 in) |
| 1990 | 112.0 mm (4.4 in) |
| 1991 | 179.6 mm (7.1 in) |
| 1992 | 87.6 mm (3.4 in) |
| 1993 | 52.6 mm (2.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1895 | 72.0 mm (2.8 in) |
| 1896 | 89.5 mm (3.5 in) |
| 1897 | 74.9 mm (2.9 in) |
| 1898 | 61.3 mm (2.4 in) |
| 1899 | 60.9 mm (2.4 in) |
| 1900 | 68.6 mm (2.7 in) |
| 1901 | 78.0 mm (3.1 in) |
| 1947 | 57.0 mm (2.2 in) |
| 1948 | 63.6 mm (2.5 in) |
| 1949 | 116.1 mm (4.6 in) |
| 1950 | 73.6 mm (2.9 in) |
| 1951 | 93.0 mm (3.7 in) |
| 1952 | 135.5 mm (5.3 in) |
| 1953 | 67.6 mm (2.7 in) |
| 1954 | 77.2 mm (3.0 in) |
| 1955 | 93.2 mm (3.7 in) |
| 1956 | 146.1 mm (5.8 in) |
| 1957 | 66.7 mm (2.6 in) |
| 1958 | 66.0 mm (2.6 in) |
| 1959 | 73.4 mm (2.9 in) |
| 1960 | 67.8 mm (2.7 in) |
| 1961 | 56.3 mm (2.2 in) |
| 1962 | 61.5 mm (2.4 in) |
| 1963 | 72.6 mm (2.9 in) |
| 1964 | 70.5 mm (2.8 in) |
| 1965 | 65.3 mm (2.6 in) |
| 1966 | 120.2 mm (4.7 in) |
| 1967 | 80.9 mm (3.2 in) |
| 1968 | 77.5 mm (3.1 in) |
| 1969 | 62.0 mm (2.4 in) |
| 1970 | 102.3 mm (4.0 in) |
| 1971 | 102.1 mm (4.0 in) |
| 1972 | 165.4 mm (6.5 in) |
| 1973 | 102.3 mm (4.0 in) |
| 1974 | 65.0 mm (2.6 in) |
| 1975 | 188.2 mm (7.4 in) |
| 1976 | 139.0 mm (5.5 in) |
| 1977 | 67.6 mm (2.7 in) |
| 1978 | 99.5 mm (3.9 in) |
| 1979 | 86.4 mm (3.4 in) |
| 1980 | 67.0 mm (2.6 in) |
| 1981 | 72.1 mm (2.8 in) |
| 1982 | 83.3 mm (3.3 in) |
| 1983 | 83.3 mm (3.3 in) |
| 1984 | 115.9 mm (4.6 in) |
| 1985 | 71.2 mm (2.8 in) |
| 1986 | 59.0 mm (2.3 in) |
| 1987 | 77.5 mm (3.1 in) |
| 1988 | 102.9 mm (4.1 in) |
| 1989 | 106.6 mm (4.2 in) |
| 1990 | 155.7 mm (6.1 in) |
| 1991 | 182.2 mm (7.2 in) |
| 1992 | 95.5 mm (3.8 in) |
| 1993 | 55.6 mm (2.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1895 | 20 days |
| 1896 | 18 days |
| 1897 | 26 days |
| 1898 | 23 days |
| 1899 | 23 days |
| 1900 | 18 days |
| 1901 | 11 days |
| 1947 | 27 days |
| 1948 | 13 days |
| 1949 | 20 days |
| 1950 | 16 days |
| 1951 | 19 days |
| 1952 | 29 days |
| 1953 | 23 days |
| 1954 | 12 days |
| 1955 | 22 days |
| 1956 | 15 days |
| 1957 | 17 days |
| 1958 | 16 days |
| 1959 | 14 days |
| 1960 | 13 days |
| 1961 | 14 days |
| 1962 | 20 days |
| 1963 | 27 days |
| 1964 | 27 days |
| 1965 | 19 days |
| 1966 | 18 days |
| 1967 | 12 days |
| 1968 | 26 days |
| 1969 | 17 days |
| 1970 | 17 days |
| 1971 | 13 days |
| 1972 | 14 days |
| 1973 | 26 days |
| 1974 | 19 days |
| 1975 | 12 days |
| 1976 | 21 days |
| 1977 | 20 days |
| 1978 | 16 days |
| 1979 | 16 days |
| 1980 | 15 days |
| 1981 | 19 days |
| 1982 | 15 days |
| 1983 | 18 days |
| 1984 | 17 days |
| 1985 | 15 days |
| 1986 | 21 days |
| 1987 | 23 days |
| 1988 | 29 days |
| 1989 | 15 days |
| 1990 | 16 days |
| 1991 | 28 days |
| 1992 | 20 days |
| 1993 | 18 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
40 years with a frostAcross 40 years with a frost, the median last spring frost at Hagerstown falls on 14 April and the median first autumn frost on 20 October, which leaves a median of 189 days between them.
Fitted over all years, the growing season changes by +1.3 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1957 to 1992) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 14 April | n/a | 14 April | n/a | -0.2 days per decade |
| First autumn frost | 20 October | n/a | 22 October | n/a | +1.1 days per decade |
| Growing days | 189 days | n/a | 190 days | n/a | +1.3 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
46 years, 1896 to 1992A day with at least 58.5 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 179.4 mm (7.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 58.5 mm (2.3 in) | |
| 5 years | 79.3 mm (3.1 in) | |
| 10 years | 96.8 mm (3.8 in) | |
| 25 years | 124.3 mm (4.9 in) | |
| 50 years | 149.5 mm (5.9 in) | Longer than the 46 years of record |
| 100 years | 179.4 mm (7.1 in) | Longer than the 46 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, 46 years of values from 1896 to 1992.
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: 179.6 mm (7.1 in) in 1991; 122.2 mm (4.8 in) in 1956; 112.0 mm (4.4 in) in 1990.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Hagerstown, at 1962 and 1967. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1962 ran 0.4 C (0.8 F) higher than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1967 ran 0.2 C (0.4 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1962 | +0.4 | +0.8 | possible | 5 |
| 1967 | -0.2 | -0.4 | 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).