Dover AFB Weather Records (USW00013707)

Record envelope, standing records and threshold days for Dover AFB (USW00013707), Delaware, United States, with 81 years of record.

Key Facts for Dover AFB

Dover AFB (USW00013707) is a weather station in Delaware, United States at 39.13 latitude and -75.47 longitude, 7 m (23 ft) above sea level.
The station reports from 1946 to 2026, 81 years of record.
1,464 records set at Dover AFB still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Delaware, United States, 39.13 latitude, -75.47 longitude.
Elevation: 7 m (23 ft).
Period of record: 1946 to 2026, 81 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

18 days at or beyond a record

The band shows the record high and record low for each calendar day at Dover AFB. The lines show the 2026 daily maximum and minimum. 18 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Dover AFB, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	22.2 C (72.0 F)	-16.7 C (1.9 F)	14.0 C (57.2 F)	-13.0 C (8.6 F)
Feb	22.8 C (73.0 F)	-17.8 C (0.0 F)	18.5 C (65.3 F)	-7.8 C (18.0 F)
Mar	27.4 C (81.3 F)	-12.8 C (9.0 F)	27.4 C (81.3 F)	-5.8 C (21.6 F)
Apr	31.7 C (89.1 F)	-2.2 C (28.0 F)	29.4 C (84.9 F)	0.1 C (32.2 F)
May	36.1 C (97.0 F)	1.1 C (34.0 F)	29.7 C (85.5 F)	9.5 C (49.1 F)
Jun	38.0 C (100.4 F)	6.1 C (43.0 F)	38.0 C (100.4 F)	10.2 C (50.4 F)
Jul	38.3 C (100.9 F)	11.7 C (53.1 F)	34.7 C (94.5 F)	18.5 C (65.3 F)
Aug	37.8 C (100.0 F)	10.0 C (50.0 F)	33.1 C (91.6 F)	14.2 C (57.6 F)
Sep	35.6 C (96.1 F)	3.9 C (39.0 F)	33.0 C (91.4 F)	11.2 C (52.2 F)
Oct	32.8 C (91.0 F)	-4.4 C (24.1 F)	27.6 C (81.7 F)	4.9 C (40.8 F)
Nov	28.3 C (82.9 F)	-10.0 C (14.0 F)	20.8 C (69.4 F)	-0.8 C (30.6 F)
Dec	23.3 C (73.9 F)	-13.3 C (8.1 F)	16.3 C (61.3 F)	-7.9 C (17.8 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Dover AFB still stand. 1959 holds the most, with 89.

Standing records at Dover AFB by the year they were set
Year set	Standing records
1946	9
1949	20
1950	28
1951	64
1952	62
1953	75
1954	76
1955	79
1956	87
1957	68
1958	60
1959	89
1960	71
1961	62
1962	62
1963	66
1964	62
1965	85
1966	67
1967	83
1968	48
1969	26
1970	51
2025	64

Wettest Day of Each Month

Aug: 228.9 mm (9.0 in)

The wettest day on record for each calendar month at Dover AFB. The most was 228.9 mm (9.0 in) on 4 August 1967.

Record daily precipitation for each month at Dover AFB
Month	Record daily precipitation (mm)	Date
Jan	37.1 mm (1.5 in)	6 January 1962
Feb	48.5 mm (1.9 in)	27 February 1958
Mar	40.6 mm (1.6 in)	19 March 1957
Apr	57.9 mm (2.3 in)	14 April 1970
May	64.0 mm (2.5 in)	7 May 1967
Jun	69.9 mm (2.8 in)	14 June 1969
Jul	122.2 mm (4.8 in)	28 July 1969
Aug	228.9 mm (9.0 in)	4 August 1967
Sep	88.4 mm (3.5 in)	12 September 1960
Oct	104.4 mm (4.1 in)	19 October 1966
Nov	143.8 mm (5.7 in)	1 November 1956
Dec	37.8 mm (1.5 in)	18 December 1951

Period of Record Coverage

1946 to 2025

24 years of record at Dover AFB, 1946 to 2025. 3 years have data for under 90 percent of days and are left out of rankings: 1946, 1949, 1950.

Days with data per year at Dover AFB
Year	Days with data	Share of year	Complete
1946	31	8%	No
1949	50	14%	No
1950	133	36%	No
1951	363	99%	Yes
1952	365	100%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	363	99%	Yes
1965	364	100%	Yes
1966	363	99%	Yes
1967	362	99%	Yes
1968	362	99%	Yes
1969	334	92%	Yes
1970	362	99%	Yes
2025	359	98%	Yes

Latest Records

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

Climate Trend

20 complete years, 1951 to 2025

One stripe for each of 20 complete years at Dover AFB, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 12.7 C (54.9 F); red stripes are warmer. The coolest year was 1967, at 11.5 C (52.7 F), and the warmest was 2025, at 14.3 C (57.7 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Dover AFB as warming stripes, 1951 to 2025
Year	Annual mean temperature	Difference from the station mean
1951	13.0 C	+0.25 C
1952	13.2 C	+0.48 C
1953	13.6 C	+0.91 C
1954	13.1 C	+0.35 C
1955	12.8 C	+0.10 C
1956	12.6 C	-0.06 C
1957	13.2 C	+0.53 C
1958	11.8 C	-0.94 C
1959	13.5 C	+0.82 C
1960	12.4 C	-0.28 C
1961	12.5 C	-0.16 C
1962	12.1 C	-0.61 C
1963	12.0 C	-0.73 C
1964	12.7 C	+0.01 C
1965	12.9 C	+0.23 C
1966	12.1 C	-0.64 C
1967	11.5 C	-1.18 C
1968	12.3 C	-0.41 C
1970	12.4 C	-0.28 C
2025	14.3 C	+1.55 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1946 to 2026

Yearly extremes at Dover AFB: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.3 C (100.9 F)	1957	35.6 C (96.1 F)	25
Coldest night (TNn)	-17.8 C (0.0 F)	1962	-13.0 C (8.6 F)	25
Wettest day (Rx1day)	228.9 mm (9.0 in)	1967	63.6 mm (2.5 in)	24
Wettest five days (Rx5day)	287.9 mm (11.3 in)	1967	99.5 mm (3.9 in)	24
Longest dry spell (CDD)	33 days	1953	21 days	24

Hottest day (TXx)

The hottest day of the year at Dover AFB, 1946 to 2026. The record is 38.3 C (100.9 F) in 1957, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Dover AFB by year
Year	Hottest day (TXx)
1946	34.4 C (93.9 F)
1949	37.8 C (100.0 F)
1950	33.3 C (91.9 F)
1951	33.9 C (93.0 F)
1952	37.2 C (99.0 F)
1953	37.8 C (100.0 F)
1954	37.2 C (99.0 F)
1955	36.7 C (98.1 F)
1956	35.0 C (95.0 F)
1957	38.3 C (100.9 F)
1958	33.9 C (93.0 F)
1959	36.7 C (98.1 F)
1960	33.3 C (91.9 F)
1961	33.3 C (91.9 F)
1962	35.6 C (96.1 F)
1963	35.0 C (95.0 F)
1964	36.1 C (97.0 F)
1965	37.8 C (100.0 F)
1966	38.3 C (100.9 F)
1967	32.8 C (91.0 F)
1968	35.6 C (96.1 F)
1969	35.0 C (95.0 F)
1970	35.6 C (96.1 F)
2025	38.0 C (100.4 F)
2026	37.9 C (100.2 F)

Coldest night (TNn)

The coldest night of the year at Dover AFB, 1946 to 2026. The record is -17.8 C (0.0 F) in 1962, marked on the chart; the median year is -13.0 C (8.6 F).

Coldest night (TNn) at Dover AFB by year
Year	Coldest night (TNn)
1946	12.2 C (54.0 F)
1949	12.8 C (55.0 F)
1950	-11.1 C (12.0 F)
1951	-12.2 C (10.0 F)
1952	-11.1 C (12.0 F)
1953	-10.0 C (14.0 F)
1954	-11.7 C (10.9 F)
1955	-15.6 C (3.9 F)
1956	-8.3 C (17.1 F)
1957	-16.7 C (1.9 F)
1958	-15.6 C (3.9 F)
1959	-11.1 C (12.0 F)
1960	-12.8 C (9.0 F)
1961	-17.2 C (1.0 F)
1962	-17.8 C (0.0 F)
1963	-13.9 C (7.0 F)
1964	-15.0 C (5.0 F)
1965	-15.6 C (3.9 F)
1966	-16.1 C (3.0 F)
1967	-13.3 C (8.1 F)
1968	-15.0 C (5.0 F)
1969	-10.0 C (14.0 F)
1970	-16.1 C (3.0 F)
2025	-13.0 C (8.6 F)
2026	-12.8 C (9.0 F)

Wettest day (Rx1day)

The wettest day of the year at Dover AFB, 1946 to 2026. The record is 228.9 mm (9.0 in) in 1967, marked on the chart; the median year is 63.6 mm (2.5 in).

Wettest day (Rx1day) at Dover AFB by year
Year	Wettest day (Rx1day)
1946	54.9 mm (2.2 in)
1949	68.6 mm (2.7 in)
1950	53.6 mm (2.1 in)
1951	58.4 mm (2.3 in)
1952	121.9 mm (4.8 in)
1953	83.8 mm (3.3 in)
1954	49.8 mm (2.0 in)
1955	95.3 mm (3.8 in)
1956	143.8 mm (5.7 in)
1957	44.2 mm (1.7 in)
1958	110.7 mm (4.4 in)
1959	103.1 mm (4.1 in)
1960	88.4 mm (3.5 in)
1961	60.7 mm (2.4 in)
1962	50.3 mm (2.0 in)
1963	66.5 mm (2.6 in)
1964	47.8 mm (1.9 in)
1965	33.5 mm (1.3 in)
1966	104.4 mm (4.1 in)
1967	228.9 mm (9.0 in)
1968	45.7 mm (1.8 in)
1969	122.2 mm (4.8 in)
1970	57.9 mm (2.3 in)
2025	n/a
2026	51.3 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dover AFB, 1946 to 2026. The record is 287.9 mm (11.3 in) in 1967, marked on the chart; the median year is 99.5 mm (3.9 in).

Wettest five days (Rx5day) at Dover AFB by year
Year	Wettest five days (Rx5day)
1946	64.5 mm (2.5 in)
1949	71.6 mm (2.8 in)
1950	102.4 mm (4.0 in)
1951	101.4 mm (4.0 in)
1952	170.7 mm (6.7 in)
1953	97.5 mm (3.8 in)
1954	85.6 mm (3.4 in)
1955	164.8 mm (6.5 in)
1956	198.9 mm (7.8 in)
1957	54.8 mm (2.2 in)
1958	166.6 mm (6.6 in)
1959	132.7 mm (5.2 in)
1960	144.3 mm (5.7 in)
1961	70.9 mm (2.8 in)
1962	66.2 mm (2.6 in)
1963	78.9 mm (3.1 in)
1964	105.2 mm (4.1 in)
1965	55.9 mm (2.2 in)
1966	115.6 mm (4.6 in)
1967	287.9 mm (11.3 in)
1968	96.3 mm (3.8 in)
1969	167.2 mm (6.6 in)
1970	68.8 mm (2.7 in)
2025	n/a
2026	49.1 mm (1.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dover AFB, 1946 to 2026. The record is 33 days in 1953, marked on the chart; the median year is 21 days.

Longest dry spell (CDD) at Dover AFB by year
Year	Longest dry spell (CDD)
1946	9 days
1949	12 days
1950	12 days
1951	12 days
1952	24 days
1953	33 days
1954	19 days
1955	28 days
1956	13 days
1957	17 days
1958	20 days
1959	25 days
1960	19 days
1961	22 days
1962	23 days
1963	32 days
1964	31 days
1965	24 days
1966	21 days
1967	20 days
1968	22 days
1969	23 days
1970	16 days
2025	n/a
2026	4 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

20 years with a frost

Across 20 years with a frost, the median last spring frost at Dover AFB falls on 6 April and the median first autumn frost on 4 November, which leaves a median of 210 days between them.

Frost dates and growing season at Dover AFB
Measure	Median, all years	Earliest period	Recent period (1951 to 2025)	Recent against earliest	Fitted trend
Last spring frost	6 April	n/a	6 April	n/a	n/a
First autumn frost	4 November	n/a	4 November	n/a	n/a
Growing days	210 days	n/a	210 days	n/a	n/a

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.

Download the Data

Data for Dover AFB standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dover AFB threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

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