Frederick Wfmd Weather Records (USW00013730)

Record envelope, standing records and threshold days for Frederick Wfmd (USW00013730), Maryland, United States, with 79 years of record.

Key Facts for Frederick Wfmd

Frederick Wfmd (USW00013730) is a weather station in Maryland, United States at 39.42 latitude and -77.47 longitude, 133 m (436 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
1,464 records set at Frederick Wfmd still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Maryland, United States, 39.42 latitude, -77.47 longitude.
Elevation: 133 m (436 ft).
Period of record: 1948 to 2026, 79 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

23 days at or beyond a record

The band shows the record high and record low for each calendar day at Frederick Wfmd. The lines show the 2026 daily maximum and minimum. 23 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Frederick Wfmd, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	24.4 C (75.9 F)	-23.3 C (-9.9 F)	13.0 C (55.4 F)	-18.0 C (-0.4 F)
Feb	26.7 C (80.1 F)	-23.9 C (-11.0 F)	18.0 C (64.4 F)	-11.0 C (12.2 F)
Mar	31.1 C (88.0 F)	-18.3 C (-0.9 F)	28.0 C (82.4 F)	-6.0 C (21.2 F)
Apr	33.9 C (93.0 F)	-6.7 C (19.9 F)	29.0 C (84.2 F)	-3.0 C (26.6 F)
May	34.4 C (93.9 F)	-3.3 C (26.1 F)	31.0 C (87.8 F)	6.0 C (42.8 F)
Jun	37.8 C (100.0 F)	5.0 C (41.0 F)	37.0 C (98.6 F)	5.0 C (41.0 F)
Jul	38.9 C (102.0 F)	8.9 C (48.0 F)	37.0 C (98.6 F)	16.0 C (60.8 F)
Aug	37.8 C (100.0 F)	6.7 C (44.1 F)	36.0 C (96.8 F)	10.0 C (50.0 F)
Sep	38.3 C (100.9 F)	-1.1 C (30.0 F)	32.0 C (89.6 F)	8.0 C (46.4 F)
Oct	33.3 C (91.9 F)	-6.1 C (21.0 F)	28.0 C (82.4 F)	0.5 C (32.9 F)
Nov	28.3 C (82.9 F)	-11.7 C (10.9 F)	22.0 C (71.6 F)	-3.0 C (26.6 F)
Dec	22.2 C (72.0 F)	-22.8 C (-9.0 F)	15.5 C (59.9 F)	-12.0 C (10.4 F)

Which Years Hold Standing Records

1,464 standing records

1,464 records at Frederick Wfmd still stand. 1956 holds the most, with 85.

Standing records at Frederick Wfmd by the year they were set
Year set	Standing records
1948	60
1949	77
1950	63
1951	65
1952	57
1953	59
1954	57
1955	54
1956	85
1957	66
1958	58
1959	67
1960	77
1961	67
1962	51
1963	59
1964	69
1965	52
1966	54
1967	39
1968	61
1969	28
1970	34
1971	21
1972	21
2025	63

Wettest Day of Each Month

Jun: 154.9 mm (6.1 in)

The wettest day on record for each calendar month at Frederick Wfmd. The most was 154.9 mm (6.1 in) on 22 June 1972.

Record daily precipitation for each month at Frederick Wfmd
Month	Record daily precipitation (mm)	Date
Jan	57.7 mm (2.3 in)	1 January 1948
Feb	46.5 mm (1.8 in)	7 February 1965
Mar	43.9 mm (1.7 in)	23 March 1950
Apr	69.1 mm (2.7 in)	27 April 1952
May	45.0 mm (1.8 in)	30 May 1971
Jun	154.9 mm (6.1 in)	22 June 1972
Jul	108.7 mm (4.3 in)	10 July 1970
Aug	120.9 mm (4.8 in)	20 August 1952
Sep	153.7 mm (6.1 in)	14 September 1966
Oct	54.9 mm (2.2 in)	19 October 1968
Nov	72.4 mm (2.9 in)	21 November 1952
Dec	50.0 mm (2.0 in)	4 December 1950

Period of Record Coverage

1948 to 2025

26 years of record at Frederick Wfmd, 1948 to 2025. 7 years have data for under 90 percent of days and are left out of rankings: 1963, 1965, 1967, 1969, 1970, 1971, 1972.

Days with data per year at Frederick Wfmd
Year	Days with data	Share of year	Complete
1948	366	100%	Yes
1949	352	96%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	364	99%	Yes
1953	364	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	363	99%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	364	100%	Yes
1963	303	83%	No
1964	364	99%	Yes
1965	292	80%	No
1966	329	90%	Yes
1967	299	82%	No
1968	364	99%	Yes
1969	321	88%	No
1970	242	66%	No
1971	198	54%	No
1972	117	32%	No
2025	354	97%	Yes

Latest Records

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

Climate Trend

18 complete years, 1948 to 2025

One stripe for each of 18 complete years at Frederick Wfmd, 1948 to 2025. Blue stripes are years cooler than the station's own mean of 12.1 C (53.8 F); red stripes are warmer. The coolest year was 1958, at 10.8 C (51.4 F), and the warmest was 1949, at 13.8 C (56.9 F). The strongest colour marks a difference of 1.8 C (3.2 F).

Annual mean temperature at Frederick Wfmd as warming stripes, 1948 to 2025
Year	Annual mean temperature	Difference from the station mean
1948	12.2 C	+0.05 C
1949	13.8 C	+1.72 C
1950	12.4 C	+0.25 C
1951	12.6 C	+0.49 C
1952	12.4 C	+0.33 C
1953	12.5 C	+0.38 C
1954	12.1 C	+0.00 C
1955	11.8 C	-0.27 C
1956	11.5 C	-0.59 C
1957	12.1 C	-0.04 C
1958	10.8 C	-1.31 C
1959	12.4 C	+0.33 C
1960	10.9 C	-1.19 C
1961	11.3 C	-0.83 C
1962	10.9 C	-1.18 C
1964	12.4 C	+0.34 C
1968	12.1 C	+0.02 C
2025	13.5 C	+1.43 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

1948 to 2026

Yearly extremes at Frederick Wfmd: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.0 C (102.2 F)	2026	36.1 C (97.0 F)	27
Coldest night (TNn)	-23.9 C (-11.0 F)	1961	-17.8 C (0.0 F)	27
Wettest day (Rx1day)	154.9 mm (6.1 in)	1972	56.3 mm (2.2 in)	26
Wettest five days (Rx5day)	206.4 mm (8.1 in)	1972	83.6 mm (3.3 in)	25
Longest dry spell (CDD)	29 days	1952	17 days	26

Hottest day (TXx)

The hottest day of the year at Frederick Wfmd, 1948 to 2026. The record is 39.0 C (102.2 F) in 2026, marked on the chart; the median year is 36.1 C (97.0 F).

Hottest day (TXx) at Frederick Wfmd by year
Year	Hottest day (TXx)
1948	37.2 C (99.0 F)
1949	38.3 C (100.9 F)
1950	35.0 C (95.0 F)
1951	35.6 C (96.1 F)
1952	37.8 C (100.0 F)
1953	38.3 C (100.9 F)
1954	38.9 C (102.0 F)
1955	37.2 C (99.0 F)
1956	35.6 C (96.1 F)
1957	37.8 C (100.0 F)
1958	34.4 C (93.9 F)
1959	37.8 C (100.0 F)
1960	33.9 C (93.0 F)
1961	34.4 C (93.9 F)
1962	37.8 C (100.0 F)
1963	35.0 C (95.0 F)
1964	36.1 C (97.0 F)
1965	36.7 C (98.1 F)
1966	37.2 C (99.0 F)
1967	34.4 C (93.9 F)
1968	35.6 C (96.1 F)
1969	36.1 C (97.0 F)
1970	35.6 C (96.1 F)
1971	32.8 C (91.0 F)
1972	35.0 C (95.0 F)
2025	37.0 C (98.6 F)
2026	39.0 C (102.2 F)

Coldest night (TNn)

The coldest night of the year at Frederick Wfmd, 1948 to 2026. The record is -23.9 C (-11.0 F) in 1961, marked on the chart; the median year is -17.8 C (0.0 F).

Coldest night (TNn) at Frederick Wfmd by year
Year	Coldest night (TNn)
1948	-20.0 C (-4.0 F)
1949	-15.6 C (3.9 F)
1950	-15.6 C (3.9 F)
1951	-17.8 C (0.0 F)
1952	-12.8 C (9.0 F)
1953	-9.4 C (15.1 F)
1954	-15.0 C (5.0 F)
1955	-17.2 C (1.0 F)
1956	-16.7 C (1.9 F)
1957	-23.3 C (-9.9 F)
1958	-18.3 C (-0.9 F)
1959	-16.7 C (1.9 F)
1960	-22.8 C (-9.0 F)
1961	-23.9 C (-11.0 F)
1962	-20.6 C (-5.1 F)
1963	-23.3 C (-9.9 F)
1964	-12.8 C (9.0 F)
1965	-17.8 C (0.0 F)
1966	-13.9 C (7.0 F)
1967	-18.3 C (-0.9 F)
1968	-21.7 C (-7.1 F)
1969	-13.3 C (8.1 F)
1970	-18.9 C (-2.0 F)
1971	-15.0 C (5.0 F)
1972	-7.2 C (19.0 F)
2025	-18.0 C (-0.4 F)
2026	-18.3 C (-0.9 F)

Wettest day (Rx1day)

The wettest day of the year at Frederick Wfmd, 1948 to 2026. The record is 154.9 mm (6.1 in) in 1972, marked on the chart; the median year is 56.3 mm (2.2 in).

Wettest day (Rx1day) at Frederick Wfmd by year
Year	Wettest day (Rx1day)
1948	57.7 mm (2.3 in)
1949	45.7 mm (1.8 in)
1950	51.1 mm (2.0 in)
1951	65.0 mm (2.6 in)
1952	120.9 mm (4.8 in)
1953	49.3 mm (1.9 in)
1954	41.9 mm (1.6 in)
1955	87.6 mm (3.4 in)
1956	83.3 mm (3.3 in)
1957	39.6 mm (1.6 in)
1958	52.6 mm (2.1 in)
1959	58.4 mm (2.3 in)
1960	32.8 mm (1.3 in)
1961	73.7 mm (2.9 in)
1962	31.8 mm (1.3 in)
1963	49.5 mm (1.9 in)
1964	77.2 mm (3.0 in)
1965	72.6 mm (2.9 in)
1966	153.7 mm (6.1 in)
1967	44.7 mm (1.8 in)
1968	54.9 mm (2.2 in)
1969	62.2 mm (2.4 in)
1970	108.7 mm (4.3 in)
1971	50.8 mm (2.0 in)
1972	154.9 mm (6.1 in)
2025	n/a
2026	13.5 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Frederick Wfmd, 1948 to 2026. The record is 206.4 mm (8.1 in) in 1972, marked on the chart; the median year is 83.6 mm (3.3 in).

Wettest five days (Rx5day) at Frederick Wfmd by year
Year	Wettest five days (Rx5day)
1948	90.4 mm (3.6 in)
1949	129.8 mm (5.1 in)
1950	95.3 mm (3.8 in)
1951	147.5 mm (5.8 in)
1952	152.1 mm (6.0 in)
1953	62.0 mm (2.4 in)
1954	52.8 mm (2.1 in)
1955	144.8 mm (5.7 in)
1956	129.5 mm (5.1 in)
1957	99.3 mm (3.9 in)
1958	63.8 mm (2.5 in)
1959	68.4 mm (2.7 in)
1960	62.7 mm (2.5 in)
1961	76.7 mm (3.0 in)
1962	54.6 mm (2.1 in)
1963	58.1 mm (2.3 in)
1964	83.6 mm (3.3 in)
1965	73.1 mm (2.9 in)
1966	204.8 mm (8.1 in)
1967	91.2 mm (3.6 in)
1968	82.6 mm (3.3 in)
1969	66.0 mm (2.6 in)
1970	159.5 mm (6.3 in)
1971	80.6 mm (3.2 in)
1972	206.4 mm (8.1 in)
2025	n/a
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Frederick Wfmd, 1948 to 2026. The record is 29 days in 1952, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Frederick Wfmd by year
Year	Longest dry spell (CDD)
1948	13 days
1949	19 days
1950	15 days
1951	21 days
1952	29 days
1953	14 days
1954	16 days
1955	22 days
1956	16 days
1957	17 days
1958	16 days
1959	14 days
1960	29 days
1961	16 days
1962	23 days
1963	28 days
1964	27 days
1965	15 days
1966	22 days
1967	22 days
1968	26 days
1969	17 days
1970	17 days
1971	20 days
1972	13 days
2025	n/a
2026	2 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.

Download the Data

Data for Frederick Wfmd standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Frederick Wfmd 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 2026-10-17 (17 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).