Harrisburg Capital City AP Weather Records (USW00014751)
Record envelope, standing records and threshold days for Harrisburg Capital City AP (USW00014751), Pennsylvania, United States, with 88 years of record.
Key Facts for Harrisburg Capital City AP
- Harrisburg Capital City AP (USW00014751) is a weather station in Pennsylvania, United States at 40.22 latitude and -76.86 longitude, 102 m (335 ft) above sea level.
- The station reports from 1939 to 2026, 88 years of record.
- 1,464 records set at Harrisburg Capital City AP still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Harrisburg Capital City AP set a daily record precipitation of 29.2 mm (1.1 in) on 20 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Pennsylvania, United States, 40.22 latitude, -76.86 longitude.
- Elevation: 102 m (335 ft).
- Period of record: 1939 to 2026, 88 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 22.8 C (73.0 F) | -22.8 C (-9.0 F) | 13.9 C (57.0 F) | -15.6 C (3.9 F) |
| Feb | 28.3 C (82.9 F) | -20.6 C (-5.1 F) | 17.2 C (63.0 F) | -14.4 C (6.1 F) |
| Mar | 30.0 C (86.0 F) | -16.6 C (2.1 F) | 27.8 C (82.0 F) | -6.1 C (21.0 F) |
| Apr | 33.9 C (93.0 F) | -7.2 C (19.0 F) | 31.7 C (89.1 F) | -2.8 C (27.0 F) |
| May | 36.1 C (97.0 F) | -0.6 C (30.9 F) | 34.4 C (93.9 F) | 2.8 C (37.0 F) |
| Jun | 37.8 C (100.0 F) | 4.4 C (39.9 F) | 33.9 C (93.0 F) | 9.4 C (48.9 F) |
| Jul | 41.7 C (107.1 F) | 9.4 C (48.9 F) | 38.9 C (102.0 F) | 14.4 C (57.9 F) |
| Aug | 38.3 C (100.9 F) | 7.2 C (45.0 F) | 32.2 C (90.0 F) | 13.3 C (55.9 F) |
| Sep | 38.9 C (102.0 F) | -1.1 C (30.0 F) | 33.3 C (91.9 F) | 6.7 C (44.1 F) |
| Oct | 36.1 C (97.0 F) | -5.0 C (23.0 F) | 30.0 C (86.0 F) | 5.0 C (41.0 F) |
| Nov | 28.9 C (84.0 F) | -10.6 C (12.9 F) | n/a | n/a |
| Dec | 23.9 C (75.0 F) | -22.2 C (-8.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1939 | 16 |
| 1940 | 37 |
| 1941 | 19 |
| 1942 | 21 |
| 1943 | 26 |
| 1944 | 16 |
| 1945 | 27 |
| 1946 | 24 |
| 1947 | 28 |
| 1948 | 13 |
| 1949 | 21 |
| 1950 | 29 |
| 1951 | 24 |
| 1952 | 13 |
| 1953 | 20 |
| 1954 | 18 |
| 1955 | 14 |
| 1956 | 21 |
| 1957 | 15 |
| 1958 | 21 |
| 1959 | 14 |
| 1960 | 19 |
| 1961 | 19 |
| 1962 | 21 |
| 1963 | 32 |
| 1964 | 32 |
| 1965 | 26 |
| 1966 | 23 |
| 1967 | 26 |
| 1968 | 22 |
| 1969 | 13 |
| 1970 | 24 |
| 1971 | 7 |
| 1972 | 12 |
| 1973 | 10 |
| 1974 | 17 |
| 1975 | 9 |
| 1976 | 22 |
| 1977 | 8 |
| 1978 | 11 |
| 1979 | 37 |
| 1980 | 9 |
| 1981 | 8 |
| 1982 | 29 |
| 1983 | 14 |
| 1984 | 17 |
| 1985 | 21 |
| 1986 | 7 |
| 1987 | 9 |
| 1988 | 22 |
| 1989 | 27 |
| 1990 | 26 |
| 1991 | 24 |
| 2000 | 1 |
| 2001 | 18 |
| 2002 | 23 |
| 2003 | 15 |
| 2004 | 5 |
| 2005 | 9 |
| 2006 | 11 |
| 2007 | 15 |
| 2008 | 10 |
| 2009 | 12 |
| 2010 | 10 |
| 2011 | 14 |
| 2012 | 18 |
| 2013 | 10 |
| 2014 | 14 |
| 2015 | 25 |
| 2016 | 21 |
| 2017 | 26 |
| 2018 | 28 |
| 2019 | 12 |
| 2020 | 15 |
| 2021 | 22 |
| 2022 | 22 |
| 2023 | 24 |
| 2024 | 23 |
| 2025 | 7 |
| 2026 | 14 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1970-01-09 | Record low maximum temperature | Record low maximum temperature -12.8 C (9.0 F) |
| 1972-06-21 | Record daily precipitation | Record daily precipitation 147.6 mm (5.8 in) |
| 1972-06-22 | Record daily precipitation | Record daily precipitation 231.9 mm (9.1 in) |
| 1982-01-17 | Record low maximum temperature | Record low maximum temperature -14.4 C (6.1 F) |
| 1983-02-11 | Record daily snowfall | Record daily snowfall 61.0 cm (24.0 in) |
| 1983-02-12 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1984-01-22 | Record low minimum temperature | Record low minimum temperature -22.8 C (-9.0 F) |
| 2011-07-22 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
Wettest Day of Each Month
Jun: 231.9 mm (9.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 53.1 mm (2.1 in) | 24 January 1979 |
| Feb | 50.8 mm (2.0 in) | 11 February 1983 |
| Mar | 60.5 mm (2.4 in) | 30 March 2014 |
| Apr | 98.0 mm (3.9 in) | 16 April 2011 |
| May | 66.8 mm (2.6 in) | 8 May 1960 |
| Jun | 231.9 mm (9.1 in) | 22 June 1972 |
| Jul | 101.6 mm (4.0 in) | 23 July 1969 |
| Aug | 92.7 mm (3.6 in) | 12 August 2010 |
| Sep | 133.9 mm (5.3 in) | 1 September 2021 |
| Oct | 162.1 mm (6.4 in) | 11 October 2013 |
| Nov | 74.2 mm (2.9 in) | 8 November 1943 |
| Dec | 69.3 mm (2.7 in) | 13 December 1983 |
Period of Record Coverage
1939 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 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 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 273 | 75% | No |
| 2000 | 85 | 23% | No |
| 2001 | 360 | 99% | Yes |
| 2002 | 358 | 98% | Yes |
| 2003 | 352 | 96% | Yes |
| 2004 | 362 | 99% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 363 | 99% | Yes |
| 2012 | 361 | 99% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 358 | 98% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 364 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 363 | 99% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 364 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 356 | 98% | Yes |
| 2026 | 280 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 20 September 2026 | Harrisburg Capital City AP, US | daily rain (Provisional) | 29.2 mm (1.1 in) | 15.2 mm (0.6 in) | 60 years | 35 of 100 (Notable) |
| 28 July 2026 | Harrisburg Capital City AP, US | daily rain | 29.0 mm (1.1 in) | 5.6 mm (0.22 in) | 44 years | 25 of 100 (Routine) |
| 5 July 2026 | Harrisburg Capital City AP, US | daily rain | 46.7 mm (1.8 in) | 4.0 mm (0.16 in) | 19 years | 16 of 100 (Routine) |
| 3 July 2026 | Harrisburg Capital City AP, US | daily high min | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 8 years | 13 of 100 (Routine) |
| 2 July 2026 | Harrisburg Capital City AP, US | daily high min | 25.0 C (77.0 F) | 0.6 C (1.1 F) | 4 years | 10 of 100 (Routine) |
| 1 July 2026 | Harrisburg Capital City AP, US | daily high max | 37.2 C (99.0 F) | 0.5 C (0.9 F) | 84 years | 34 of 100 (Routine) |
| 7 June 2026 | Harrisburg Capital City AP, US | daily high min | 21.0 C (69.8 F) | 0.4 C (0.7 F) | 60 years | 27 of 100 (Routine) |
| 23 May 2026 | Harrisburg Capital City AP, US | daily low max | 11.7 C (53.1 F) | 0.5 C (0.9 F) | 44 years | 21 of 100 (Routine) |
| 20 May 2026 | Harrisburg Capital City AP, US | daily high min | 18.9 C (66.0 F) | 0.6 C (1.1 F) | 64 years | 28 of 100 (Routine) |
| 19 May 2026 | Harrisburg Capital City AP, US | daily high min (Tie) | 20.0 C (68.0 F) | tie | 8 years | 2 of 100 (Routine) |
| 18 May 2026 | Harrisburg Capital City AP, US | daily high max (Tie) | 34.4 C (93.9 F) | tie | 64 years | 6 of 100 (Routine) |
| 29 April 2026 | Harrisburg Capital City AP, US | daily rain | 17.8 mm (0.7 in) | 1.8 mm (0.07 in) | 12 years | 12 of 100 (Routine) |
| 21 April 2026 | Harrisburg Capital City AP, US | daily low min | -2.8 C (27.0 F) | 1.7 C (3.1 F) | 69 years | 31 of 100 (Routine) |
| 16 April 2026 | Harrisburg Capital City AP, US | daily high max | 31.7 C (89.1 F) | 0.6 C (1.1 F) | 24 years | 15 of 100 (Routine) |
| 15 April 2026 | Harrisburg Capital City AP, US | daily high max | 31.7 C (89.1 F) | 1.1 C (2.0 F) | 84 years | 34 of 100 (Routine) |
| 22 March 2026 | Harrisburg Capital City AP, US | daily high max | 27.8 C (82.0 F) | 4.5 C (8.1 F) | 80 years | 38 of 100 (Notable) |
| 11 March 2026 | Harrisburg Capital City AP, US | daily high min | 11.1 C (52.0 F) | 1.7 C (3.1 F) | 71 years | 32 of 100 (Routine) |
| 11 March 2026 | Harrisburg Capital City AP, US | daily high max | 27.2 C (81.0 F) | 0.5 C (0.9 F) | 4 years | 9 of 100 (Routine) |
| 10 March 2026 | Harrisburg Capital City AP, US | daily high max | 27.8 C (82.0 F) | 1.7 C (3.1 F) | 9 years | 12 of 100 (Routine) |
| 25 January 2026 | Harrisburg Capital City AP, US | daily low max | -8.9 C (16.0 F) | 0.6 C (1.1 F) | 80 years | 33 of 100 (Routine) |
Climate Trend
76 complete years, 1939 to 2024| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1939 | 12.4 C | +0.35 C |
| 1940 | 10.6 C | -1.39 C |
| 1941 | 12.4 C | +0.42 C |
| 1942 | 11.9 C | -0.11 C |
| 1943 | 11.6 C | -0.38 C |
| 1944 | 11.8 C | -0.18 C |
| 1945 | 11.7 C | -0.35 C |
| 1946 | 12.3 C | +0.25 C |
| 1947 | 11.6 C | -0.42 C |
| 1948 | 11.4 C | -0.58 C |
| 1949 | 12.7 C | +0.66 C |
| 1950 | 11.1 C | -0.93 C |
| 1951 | 11.6 C | -0.39 C |
| 1952 | 12.2 C | +0.16 C |
| 1953 | 12.8 C | +0.74 C |
| 1954 | 12.0 C | -0.01 C |
| 1955 | 12.0 C | -0.05 C |
| 1956 | 11.4 C | -0.57 C |
| 1957 | 12.1 C | +0.09 C |
| 1958 | 10.8 C | -1.20 C |
| 1959 | 12.4 C | +0.40 C |
| 1960 | 11.3 C | -0.72 C |
| 1961 | 11.5 C | -0.52 C |
| 1962 | 10.9 C | -1.09 C |
| 1963 | 10.9 C | -1.07 C |
| 1964 | 11.4 C | -0.62 C |
| 1965 | 11.7 C | -0.36 C |
| 1966 | 12.0 C | -0.03 C |
| 1967 | 10.9 C | -1.07 C |
| 1968 | 11.5 C | -0.51 C |
| 1969 | 11.5 C | -0.49 C |
| 1970 | 11.8 C | -0.17 C |
| 1971 | 12.0 C | -0.03 C |
| 1972 | 11.6 C | -0.45 C |
| 1973 | 12.5 C | +0.45 C |
| 1974 | 12.3 C | +0.32 C |
| 1975 | 12.0 C | -0.01 C |
| 1976 | 11.3 C | -0.67 C |
| 1977 | 11.5 C | -0.52 C |
| 1978 | 11.1 C | -0.87 C |
| 1979 | 11.2 C | -0.81 C |
| 1980 | 11.1 C | -0.96 C |
| 1981 | 11.1 C | -0.94 C |
| 1982 | 11.0 C | -1.03 C |
| 1983 | 11.3 C | -0.68 C |
| 1984 | 11.6 C | -0.37 C |
| 1985 | 12.5 C | +0.46 C |
| 1986 | 12.0 C | -0.03 C |
| 1987 | 11.9 C | -0.11 C |
| 1988 | 11.2 C | -0.80 C |
| 1989 | 11.0 C | -1.02 C |
| 1990 | 12.8 C | +0.82 C |
| 2001 | 12.0 C | +0.02 C |
| 2002 | 12.3 C | +0.24 C |
| 2003 | 11.1 C | -0.94 C |
| 2004 | 11.9 C | -0.14 C |
| 2005 | 12.2 C | +0.20 C |
| 2006 | 12.9 C | +0.88 C |
| 2007 | 12.2 C | +0.16 C |
| 2008 | 11.9 C | -0.10 C |
| 2009 | 11.8 C | -0.26 C |
| 2010 | 12.7 C | +0.64 C |
| 2011 | 12.7 C | +0.67 C |
| 2012 | 13.5 C | +1.46 C |
| 2013 | 11.9 C | -0.08 C |
| 2014 | 10.9 C | -1.11 C |
| 2015 | 12.3 C | +0.26 C |
| 2016 | 13.5 C | +1.49 C |
| 2017 | 13.4 C | +1.37 C |
| 2018 | 13.2 C | +1.20 C |
| 2019 | 13.3 C | +1.29 C |
| 2020 | 14.1 C | +2.07 C |
| 2021 | 13.9 C | +1.86 C |
| 2022 | 13.4 C | +1.39 C |
| 2023 | 14.5 C | +2.46 C |
| 2024 | 14.4 C | +2.40 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1939 to 2024. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 76 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1939 to 2024 | 76 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.2 to 0.5) per decade | 1939 to 2024 | 76 | Rise |
| Mean daily minimum | 0.2 C (0.1 to 0.2) per decade | 0.3 F (0.2 to 0.4) per decade | 1939 to 2024 | 76 | Rise |
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
1939 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.7 C (107.1 F) | 1966 | 36.1 C (97.0 F) | 80 |
| Coldest night (TNn) | -22.8 C (-9.0 F) | 1984 | -16.1 C (3.0 F) | 80 |
| Wettest day (Rx1day) | 231.9 mm (9.1 in) | 1972 | 60.4 mm (2.4 in) | 80 |
| Wettest five days (Rx5day) | 403.9 mm (15.9 in) | 1972 | 87.0 mm (3.4 in) | 80 |
| Longest dry spell (CDD) | 39 days | 2024 | 18 days | 80 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1939 | 37.2 C (99.0 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 37.2 C (99.0 F) |
| 1942 | 36.1 C (97.0 F) |
| 1943 | 36.7 C (98.1 F) |
| 1944 | 38.3 C (100.9 F) |
| 1945 | 36.1 C (97.0 F) |
| 1946 | 35.6 C (96.1 F) |
| 1947 | 35.6 C (96.1 F) |
| 1948 | 37.8 C (100.0 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 33.9 C (93.0 F) |
| 1951 | 34.4 C (93.9 F) |
| 1952 | 37.8 C (100.0 F) |
| 1953 | 38.9 C (102.0 F) |
| 1954 | 38.3 C (100.9 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 36.1 C (97.0 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 33.3 C (91.9 F) |
| 1961 | 35.6 C (96.1 F) |
| 1962 | 37.8 C (100.0 F) |
| 1963 | 37.2 C (99.0 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 41.7 C (107.1 F) |
| 1967 | 34.4 C (93.9 F) |
| 1968 | 36.7 C (98.1 F) |
| 1969 | 36.7 C (98.1 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 35.6 C (96.1 F) |
| 1972 | 36.1 C (97.0 F) |
| 1973 | 37.8 C (100.0 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 36.1 C (97.0 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 35.0 C (95.0 F) |
| 1978 | 35.6 C (96.1 F) |
| 1979 | 33.3 C (91.9 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 33.9 C (93.0 F) |
| 1983 | 37.8 C (100.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 35.6 C (96.1 F) |
| 1986 | 35.6 C (96.1 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 33.9 C (93.0 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 39.4 C (102.9 F) |
| 2000 | 28.3 C (82.9 F) |
| 2001 | 37.8 C (100.0 F) |
| 2002 | 37.2 C (99.0 F) |
| 2003 | 33.3 C (91.9 F) |
| 2004 | 32.8 C (91.0 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 36.1 C (97.0 F) |
| 2007 | 35.0 C (95.0 F) |
| 2008 | 35.6 C (96.1 F) |
| 2009 | 33.9 C (93.0 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 38.9 C (102.0 F) |
| 2012 | 39.4 C (102.9 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 33.9 C (93.0 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 37.2 C (99.0 F) |
| 2017 | 35.6 C (96.1 F) |
| 2018 | 36.7 C (98.1 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 37.8 C (100.0 F) |
| 2021 | 36.7 C (98.1 F) |
| 2022 | 36.1 C (97.0 F) |
| 2023 | 37.2 C (99.0 F) |
| 2024 | 39.4 C (102.9 F) |
| 2025 | 36.7 C (98.1 F) |
| 2026 | 38.9 C (102.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1939 | -13.3 C (8.1 F) |
| 1940 | -16.7 C (1.9 F) |
| 1941 | -10.6 C (12.9 F) |
| 1942 | -19.4 C (-2.9 F) |
| 1943 | -16.7 C (1.9 F) |
| 1944 | -16.7 C (1.9 F) |
| 1945 | -15.6 C (3.9 F) |
| 1946 | -13.9 C (7.0 F) |
| 1947 | -16.1 C (3.0 F) |
| 1948 | -20.0 C (-4.0 F) |
| 1949 | -15.0 C (5.0 F) |
| 1950 | -17.2 C (1.0 F) |
| 1951 | -17.8 C (0.0 F) |
| 1952 | -11.7 C (10.9 F) |
| 1953 | -8.9 C (16.0 F) |
| 1954 | -15.6 C (3.9 F) |
| 1955 | -16.1 C (3.0 F) |
| 1956 | -10.0 C (14.0 F) |
| 1957 | -18.9 C (-2.0 F) |
| 1958 | -16.1 C (3.0 F) |
| 1959 | -17.8 C (0.0 F) |
| 1960 | -22.2 C (-8.0 F) |
| 1961 | -19.4 C (-2.9 F) |
| 1962 | -17.8 C (0.0 F) |
| 1963 | -20.0 C (-4.0 F) |
| 1964 | -19.4 C (-2.9 F) |
| 1965 | -17.8 C (0.0 F) |
| 1966 | -17.8 C (0.0 F) |
| 1967 | -18.9 C (-2.0 F) |
| 1968 | -20.6 C (-5.1 F) |
| 1969 | -13.3 C (8.1 F) |
| 1970 | -17.8 C (0.0 F) |
| 1971 | -14.4 C (6.1 F) |
| 1972 | -13.3 C (8.1 F) |
| 1973 | -15.0 C (5.0 F) |
| 1974 | -11.1 C (12.0 F) |
| 1975 | -13.9 C (7.0 F) |
| 1976 | -13.9 C (7.0 F) |
| 1977 | -19.4 C (-2.9 F) |
| 1978 | -17.8 C (0.0 F) |
| 1979 | -20.6 C (-5.1 F) |
| 1980 | -17.2 C (1.0 F) |
| 1981 | -20.0 C (-4.0 F) |
| 1982 | -21.1 C (-6.0 F) |
| 1983 | -19.4 C (-2.9 F) |
| 1984 | -22.8 C (-9.0 F) |
| 1985 | -22.8 C (-9.0 F) |
| 1986 | -13.3 C (8.1 F) |
| 1987 | -15.6 C (3.9 F) |
| 1988 | -18.3 C (-0.9 F) |
| 1989 | -16.7 C (1.9 F) |
| 1990 | -12.8 C (9.0 F) |
| 1991 | -11.1 C (12.0 F) |
| 2000 | -13.9 C (7.0 F) |
| 2001 | -13.3 C (8.1 F) |
| 2002 | -15.0 C (5.0 F) |
| 2003 | -15.0 C (5.0 F) |
| 2004 | -16.1 C (3.0 F) |
| 2005 | -15.6 C (3.9 F) |
| 2006 | -11.6 C (11.1 F) |
| 2007 | -14.9 C (5.2 F) |
| 2008 | -12.7 C (9.1 F) |
| 2009 | -16.6 C (2.1 F) |
| 2010 | -9.9 C (14.2 F) |
| 2011 | -16.6 C (2.1 F) |
| 2012 | -11.0 C (12.2 F) |
| 2013 | -12.7 C (9.1 F) |
| 2014 | -18.2 C (-0.8 F) |
| 2015 | -18.2 C (-0.8 F) |
| 2016 | -14.9 C (5.2 F) |
| 2017 | -13.8 C (7.2 F) |
| 2018 | -16.6 C (2.1 F) |
| 2019 | -19.9 C (-3.8 F) |
| 2020 | -9.9 C (14.2 F) |
| 2021 | -7.7 C (18.1 F) |
| 2022 | -14.9 C (5.2 F) |
| 2023 | -11.0 C (12.2 F) |
| 2024 | -11.6 C (11.1 F) |
| 2025 | -19.3 C (-2.7 F) |
| 2026 | -15.6 C (3.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1939 | 38.4 mm (1.5 in) |
| 1940 | 66.3 mm (2.6 in) |
| 1941 | 41.9 mm (1.6 in) |
| 1942 | 57.9 mm (2.3 in) |
| 1943 | 74.2 mm (2.9 in) |
| 1944 | 47.8 mm (1.9 in) |
| 1945 | 79.2 mm (3.1 in) |
| 1946 | 58.7 mm (2.3 in) |
| 1947 | 50.3 mm (2.0 in) |
| 1948 | 40.4 mm (1.6 in) |
| 1949 | 64.0 mm (2.5 in) |
| 1950 | 56.1 mm (2.2 in) |
| 1951 | 34.5 mm (1.4 in) |
| 1952 | 91.4 mm (3.6 in) |
| 1953 | 60.2 mm (2.4 in) |
| 1954 | 39.9 mm (1.6 in) |
| 1955 | 63.5 mm (2.5 in) |
| 1956 | 36.1 mm (1.4 in) |
| 1957 | 50.3 mm (2.0 in) |
| 1958 | 49.5 mm (1.9 in) |
| 1959 | 69.6 mm (2.7 in) |
| 1960 | 66.8 mm (2.6 in) |
| 1961 | 67.8 mm (2.7 in) |
| 1962 | 64.5 mm (2.5 in) |
| 1963 | 43.2 mm (1.7 in) |
| 1964 | 43.9 mm (1.7 in) |
| 1965 | 48.8 mm (1.9 in) |
| 1966 | 103.4 mm (4.1 in) |
| 1967 | 54.6 mm (2.1 in) |
| 1968 | 95.0 mm (3.7 in) |
| 1969 | 101.6 mm (4.0 in) |
| 1970 | 48.0 mm (1.9 in) |
| 1971 | 64.5 mm (2.5 in) |
| 1972 | 231.9 mm (9.1 in) |
| 1973 | 110.2 mm (4.3 in) |
| 1974 | 61.0 mm (2.4 in) |
| 1975 | 116.6 mm (4.6 in) |
| 1976 | 98.3 mm (3.9 in) |
| 1977 | 49.5 mm (1.9 in) |
| 1978 | 47.8 mm (1.9 in) |
| 1979 | 71.1 mm (2.8 in) |
| 1980 | 55.6 mm (2.2 in) |
| 1981 | 48.3 mm (1.9 in) |
| 1982 | 65.5 mm (2.6 in) |
| 1983 | 69.3 mm (2.7 in) |
| 1984 | 47.0 mm (1.9 in) |
| 1985 | 56.6 mm (2.2 in) |
| 1986 | 64.8 mm (2.6 in) |
| 1987 | 59.2 mm (2.3 in) |
| 1988 | 40.9 mm (1.6 in) |
| 1989 | 68.6 mm (2.7 in) |
| 1990 | 62.2 mm (2.4 in) |
| 1991 | 70.6 mm (2.8 in) |
| 2000 | 37.3 mm (1.5 in) |
| 2001 | 29.5 mm (1.2 in) |
| 2002 | 39.4 mm (1.6 in) |
| 2003 | 60.5 mm (2.4 in) |
| 2004 | 97.3 mm (3.8 in) |
| 2005 | 82.0 mm (3.2 in) |
| 2006 | 70.9 mm (2.8 in) |
| 2007 | 50.0 mm (2.0 in) |
| 2008 | 64.3 mm (2.5 in) |
| 2009 | 54.9 mm (2.2 in) |
| 2010 | 92.7 mm (3.6 in) |
| 2011 | 98.0 mm (3.9 in) |
| 2012 | 68.8 mm (2.7 in) |
| 2013 | 162.1 mm (6.4 in) |
| 2014 | 60.5 mm (2.4 in) |
| 2015 | 50.5 mm (2.0 in) |
| 2016 | 36.6 mm (1.4 in) |
| 2017 | 49.8 mm (2.0 in) |
| 2018 | 65.8 mm (2.6 in) |
| 2019 | 54.1 mm (2.1 in) |
| 2020 | 37.6 mm (1.5 in) |
| 2021 | 133.9 mm (5.3 in) |
| 2022 | 51.8 mm (2.0 in) |
| 2023 | 68.8 mm (2.7 in) |
| 2024 | 61.7 mm (2.4 in) |
| 2025 | 54.6 mm (2.1 in) |
| 2026 | 46.7 mm (1.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1939 | 78.5 mm (3.1 in) |
| 1940 | 103.5 mm (4.1 in) |
| 1941 | 58.4 mm (2.3 in) |
| 1942 | 80.0 mm (3.1 in) |
| 1943 | 89.4 mm (3.5 in) |
| 1944 | 79.3 mm (3.1 in) |
| 1945 | 167.5 mm (6.6 in) |
| 1946 | 78.0 mm (3.1 in) |
| 1947 | 79.0 mm (3.1 in) |
| 1948 | 61.9 mm (2.4 in) |
| 1949 | 77.2 mm (3.0 in) |
| 1950 | 72.7 mm (2.9 in) |
| 1951 | 58.4 mm (2.3 in) |
| 1952 | 121.4 mm (4.8 in) |
| 1953 | 95.5 mm (3.8 in) |
| 1954 | 54.2 mm (2.1 in) |
| 1955 | 100.1 mm (3.9 in) |
| 1956 | 57.4 mm (2.3 in) |
| 1957 | 67.3 mm (2.6 in) |
| 1958 | 64.0 mm (2.5 in) |
| 1959 | 76.0 mm (3.0 in) |
| 1960 | 88.4 mm (3.5 in) |
| 1961 | 100.2 mm (3.9 in) |
| 1962 | 69.7 mm (2.7 in) |
| 1963 | 73.2 mm (2.9 in) |
| 1964 | 73.2 mm (2.9 in) |
| 1965 | 60.1 mm (2.4 in) |
| 1966 | 116.9 mm (4.6 in) |
| 1967 | 92.8 mm (3.7 in) |
| 1968 | 114.6 mm (4.5 in) |
| 1969 | 174.2 mm (6.9 in) |
| 1970 | 85.9 mm (3.4 in) |
| 1971 | 140.2 mm (5.5 in) |
| 1972 | 403.9 mm (15.9 in) |
| 1973 | 125.9 mm (5.0 in) |
| 1974 | 101.4 mm (4.0 in) |
| 1975 | 314.0 mm (12.4 in) |
| 1976 | 127.8 mm (5.0 in) |
| 1977 | 76.7 mm (3.0 in) |
| 1978 | 85.4 mm (3.4 in) |
| 1979 | 111.0 mm (4.4 in) |
| 1980 | 58.4 mm (2.3 in) |
| 1981 | 77.4 mm (3.0 in) |
| 1982 | 140.2 mm (5.5 in) |
| 1983 | 93.6 mm (3.7 in) |
| 1984 | 93.0 mm (3.7 in) |
| 1985 | 68.9 mm (2.7 in) |
| 1986 | 93.3 mm (3.7 in) |
| 1987 | 80.0 mm (3.1 in) |
| 1988 | 73.1 mm (2.9 in) |
| 1989 | 109.5 mm (4.3 in) |
| 1990 | 91.2 mm (3.6 in) |
| 1991 | 70.6 mm (2.8 in) |
| 2000 | 75.2 mm (3.0 in) |
| 2001 | 44.0 mm (1.7 in) |
| 2002 | 68.9 mm (2.7 in) |
| 2003 | 93.0 mm (3.7 in) |
| 2004 | 128.6 mm (5.1 in) |
| 2005 | 108.9 mm (4.3 in) |
| 2006 | 126.4 mm (5.0 in) |
| 2007 | 73.1 mm (2.9 in) |
| 2008 | 78.8 mm (3.1 in) |
| 2009 | 71.1 mm (2.8 in) |
| 2010 | 145.2 mm (5.7 in) |
| 2011 | 121.2 mm (4.8 in) |
| 2012 | 88.0 mm (3.5 in) |
| 2013 | 285.5 mm (11.2 in) |
| 2014 | 95.8 mm (3.8 in) |
| 2015 | 78.6 mm (3.1 in) |
| 2016 | 43.0 mm (1.7 in) |
| 2017 | 59.4 mm (2.3 in) |
| 2018 | 210.8 mm (8.3 in) |
| 2019 | 90.5 mm (3.6 in) |
| 2020 | 57.2 mm (2.3 in) |
| 2021 | 140.5 mm (5.5 in) |
| 2022 | 95.3 mm (3.8 in) |
| 2023 | 99.7 mm (3.9 in) |
| 2024 | 119.1 mm (4.7 in) |
| 2025 | 73.4 mm (2.9 in) |
| 2026 | 67.3 mm (2.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1939 | 23 days |
| 1940 | 17 days |
| 1941 | 23 days |
| 1942 | 25 days |
| 1943 | 19 days |
| 1944 | 19 days |
| 1945 | 15 days |
| 1946 | 21 days |
| 1947 | 35 days |
| 1948 | 16 days |
| 1949 | 14 days |
| 1950 | 15 days |
| 1951 | 12 days |
| 1952 | 29 days |
| 1953 | 26 days |
| 1954 | 19 days |
| 1955 | 28 days |
| 1956 | 14 days |
| 1957 | 20 days |
| 1958 | 20 days |
| 1959 | 12 days |
| 1960 | 18 days |
| 1961 | 14 days |
| 1962 | 15 days |
| 1963 | 32 days |
| 1964 | 27 days |
| 1965 | 14 days |
| 1966 | 18 days |
| 1967 | 16 days |
| 1968 | 26 days |
| 1969 | 17 days |
| 1970 | 15 days |
| 1971 | 15 days |
| 1972 | 14 days |
| 1973 | 26 days |
| 1974 | 16 days |
| 1975 | 12 days |
| 1976 | 25 days |
| 1977 | 18 days |
| 1978 | 17 days |
| 1979 | 15 days |
| 1980 | 12 days |
| 1981 | 15 days |
| 1982 | 15 days |
| 1983 | 21 days |
| 1984 | 10 days |
| 1985 | 19 days |
| 1986 | 18 days |
| 1987 | 12 days |
| 1988 | 22 days |
| 1989 | 14 days |
| 1990 | 12 days |
| 1991 | 14 days |
| 2000 | 21 days |
| 2001 | 34 days |
| 2002 | 16 days |
| 2003 | 22 days |
| 2004 | 17 days |
| 2005 | 20 days |
| 2006 | 21 days |
| 2007 | 28 days |
| 2008 | 24 days |
| 2009 | 19 days |
| 2010 | 20 days |
| 2011 | 15 days |
| 2012 | 15 days |
| 2013 | 15 days |
| 2014 | 12 days |
| 2015 | 29 days |
| 2016 | 17 days |
| 2017 | 18 days |
| 2018 | 11 days |
| 2019 | 13 days |
| 2020 | 25 days |
| 2021 | 16 days |
| 2022 | 13 days |
| 2023 | 21 days |
| 2024 | 39 days |
| 2025 | 17 days |
| 2026 | 20 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
76 years with a frostAcross 76 years with a frost, the median last spring frost at Harrisburg Capital City AP falls on 13 April and the median first autumn frost on 27 October, which leaves a median of 196 days between them.
In 1985 to 2024 the median growing season was 199 days. That is 4 days more than in 1939 to 1968.
Fitted over all years, the growing season changes by +1.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1939 to 1968) | Recent period (1985 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 13 April | 13 April | 14 April | 1 day later | -0.2 days per decade |
| First autumn frost | 27 October | 26 October | 1 November | 6 days later | +1.4 days per decade |
| Growing days | 196 days | 195 days | 199 days | 4 days more | +1.6 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
77 years, 1939 to 2025A day with at least 58.3 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 182.8 mm (7.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 58.3 mm (2.3 in) | |
| 5 years | 80.0 mm (3.1 in) | |
| 10 years | 98.2 mm (3.9 in) | |
| 25 years | 126.5 mm (5.0 in) | |
| 50 years | 152.3 mm (6.0 in) | |
| 100 years | 182.8 mm (7.2 in) | Longer than the 77 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, 77 years of values from 1939 to 2025.
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: 231.9 mm (9.1 in) in 1972; 162.1 mm (6.4 in) in 2013; 133.9 mm (5.3 in) in 2021.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Harrisburg Capital City AP, at 2016. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2016 ran 0.5 C (1.0 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2016 | +0.5 | +1.0 | likely | 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.
Climate Twins
2010 to 2024 against 1961 to 1990Over 2010 to 2024, Harrisburg Capital City AP had a mean temperature of 13.2 C (55.7 F) and 1,050.7 mm (41.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Marcus Hook (United States, 129 km away), Laurel 3 W (United States, 126 km away) and College Park (United States, 138 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Marcus Hook | United States | 129 km (80 mi) | 13.3 C (55.9 F) | 1,085.2 mm (42.7 in) | 0.45 |
| Laurel 3 W | United States | 126 km (78 mi) | 13.1 C (55.6 F) | 1,064.2 mm (41.9 in) | 0.47 |
| College Park | United States | 138 km (86 mi) | 13.4 C (56.0 F) | 1,040.9 mm (41.0 in) | 0.52 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 (2026-10-16).