Beltsville Plt STN 5 Weather Records (USC00180705)

Record envelope, standing records and threshold days for Beltsville Plt STN 5 (USC00180705), Maryland, United States, with 30 years of record.

Key Facts for Beltsville Plt STN 5

Beltsville Plt STN 5 (USC00180705) is a weather station in Maryland, United States at 39.02 latitude and -76.95 longitude, 30 m (98 ft) above sea level.
The station reports from 1949 to 1978, 30 years of record.
1,464 records set at Beltsville Plt STN 5 still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.

About the Station

Location: Maryland, United States, 39.02 latitude, -76.95 longitude.
Elevation: 30 m (98 ft).
Period of record: 1949 to 1978, 30 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Beltsville Plt STN 5. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Beltsville Plt STN 5, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	26.1 C (79.0 F)	-25.6 C (-14.1 F)	n/a	n/a
Feb	24.4 C (75.9 F)	-22.8 C (-9.0 F)	n/a	n/a
Mar	29.4 C (84.9 F)	-16.7 C (1.9 F)	n/a	n/a
Apr	33.9 C (93.0 F)	-7.8 C (18.0 F)	n/a	n/a
May	35.0 C (95.0 F)	-2.8 C (27.0 F)	n/a	n/a
Jun	37.2 C (99.0 F)	3.3 C (37.9 F)	n/a	n/a
Jul	38.3 C (100.9 F)	5.6 C (42.1 F)	n/a	n/a
Aug	37.8 C (100.0 F)	5.6 C (42.1 F)	n/a	n/a
Sep	37.8 C (100.0 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	29.4 C (84.9 F)	-12.2 C (10.0 F)	n/a	n/a
Dec	22.8 C (73.0 F)	-21.7 C (-7.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Beltsville Plt STN 5 still stand. 1959 holds the most, with 69.

Standing records at Beltsville Plt STN 5 by the year they were set
Year set	Standing records
1949	66
1950	68
1951	55
1952	52
1953	54
1954	68
1955	42
1956	49
1957	55
1958	39
1959	69
1960	67
1961	50
1962	45
1963	59
1964	67
1965	53
1966	44
1967	47
1968	34
1969	30
1970	41
1971	38
1972	42
1973	41
1974	34
1975	29
1976	49
1977	51
1978	26

Wettest Day of Each Month

Aug: 167.6 mm (6.6 in)

The wettest day on record for each calendar month at Beltsville Plt STN 5. The most was 167.6 mm (6.6 in) on 13 August 1955.

Record daily precipitation for each month at Beltsville Plt STN 5
Month	Record daily precipitation (mm)	Date
Jan	65.3 mm (2.6 in)	1 January 1976
Feb	48.3 mm (1.9 in)	19 February 1972
Mar	85.9 mm (3.4 in)	20 March 1958
Apr	50.8 mm (2.0 in)	2 April 1973
May	55.9 mm (2.2 in)	9 May 1960
Jun	142.2 mm (5.6 in)	22 June 1972
Jul	114.3 mm (4.5 in)	14 July 1975
Aug	167.6 mm (6.6 in)	13 August 1955
Sep	129.5 mm (5.1 in)	26 September 1975
Oct	92.7 mm (3.6 in)	14 October 1955
Nov	76.5 mm (3.0 in)	22 November 1952
Dec	64.3 mm (2.5 in)	18 December 1977

Period of Record Coverage

1949 to 1978

30 years of record at Beltsville Plt STN 5, 1949 to 1978. 1 years have data for under 90 percent of days and are left out of rankings: 1978.

Days with data per year at Beltsville Plt STN 5
Year	Days with data	Share of year	Complete
1949	364	100%	Yes
1950	365	100%	Yes
1951	364	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	364	100%	Yes
1958	362	99%	Yes
1959	364	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	364	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	272	75%	No

Latest Records

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

Climate Trend

29 complete years, 1949 to 1977

One stripe for each of 29 complete years at Beltsville Plt STN 5, 1949 to 1977. Blue stripes are years cooler than the station's own mean of 12.1 C (53.7 F); red stripes are warmer. The coolest year was 1958, at 11.0 C (51.8 F), and the warmest was 1973, at 13.3 C (55.9 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Beltsville Plt STN 5 as warming stripes, 1949 to 1977
Year	Annual mean temperature	Difference from the station mean
1949	12.8 C	+0.77 C
1950	11.5 C	-0.54 C
1951	11.9 C	-0.17 C
1952	12.1 C	+0.03 C
1953	12.7 C	+0.59 C
1954	12.1 C	+0.04 C
1955	11.9 C	-0.19 C
1956	12.0 C	-0.08 C
1957	12.2 C	+0.14 C
1958	11.0 C	-1.05 C
1959	12.8 C	+0.74 C
1960	11.3 C	-0.77 C
1961	11.7 C	-0.37 C
1962	11.2 C	-0.84 C
1963	11.1 C	-1.02 C
1964	12.0 C	-0.12 C
1965	11.8 C	-0.31 C
1966	11.7 C	-0.38 C
1967	11.3 C	-0.80 C
1968	12.1 C	-0.02 C
1969	12.1 C	+0.06 C
1970	12.4 C	+0.29 C
1971	12.6 C	+0.54 C
1972	12.3 C	+0.20 C
1973	13.3 C	+1.21 C
1974	12.6 C	+0.51 C
1975	12.8 C	+0.74 C
1976	12.1 C	+0.01 C
1977	12.8 C	+0.77 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

1949 to 1978

Yearly extremes at Beltsville Plt STN 5: 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)	30
Coldest night (TNn)	-25.6 C (-14.1 F)	1961	-17.5 C (0.5 F)	30
Wettest day (Rx1day)	167.6 mm (6.6 in)	1955	63.3 mm (2.5 in)	30
Wettest five days (Rx5day)	235.5 mm (9.3 in)	1975	104.1 mm (4.1 in)	30
Longest dry spell (CDD)	34 days	1962	18 days	30

Hottest day (TXx)

The hottest day of the year at Beltsville Plt STN 5, 1949 to 1978. 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 Beltsville Plt STN 5 by year
Year	Hottest day (TXx)
1949	36.7 C (98.1 F)
1950	34.4 C (93.9 F)
1951	35.6 C (96.1 F)
1952	37.2 C (99.0 F)
1953	37.8 C (100.0 F)
1954	37.8 C (100.0 F)
1955	37.2 C (99.0 F)
1956	35.6 C (96.1 F)
1957	38.3 C (100.9 F)
1958	33.9 C (93.0 F)
1959	37.8 C (100.0 F)
1960	35.0 C (95.0 F)
1961	34.4 C (93.9 F)
1962	37.2 C (99.0 F)
1963	35.6 C (96.1 F)
1964	36.7 C (98.1 F)
1965	36.1 C (97.0 F)
1966	38.3 C (100.9 F)
1967	33.3 C (91.9 F)
1968	35.6 C (96.1 F)
1969	35.6 C (96.1 F)
1970	34.4 C (93.9 F)
1971	33.9 C (93.0 F)
1972	35.0 C (95.0 F)
1973	36.7 C (98.1 F)
1974	34.4 C (93.9 F)
1975	35.6 C (96.1 F)
1976	33.9 C (93.0 F)
1977	37.8 C (100.0 F)
1978	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Beltsville Plt STN 5, 1949 to 1978. The record is -25.6 C (-14.1 F) in 1961, marked on the chart; the median year is -17.5 C (0.5 F).

Coldest night (TNn) at Beltsville Plt STN 5 by year
Year	Coldest night (TNn)
1949	-13.3 C (8.1 F)
1950	-15.0 C (5.0 F)
1951	-19.4 C (-2.9 F)
1952	-14.4 C (6.1 F)
1953	-13.9 C (7.0 F)
1954	-18.9 C (-2.0 F)
1955	-18.3 C (-0.9 F)
1956	-14.4 C (6.1 F)
1957	-24.4 C (-11.9 F)
1958	-16.1 C (3.0 F)
1959	-18.3 C (-0.9 F)
1960	-21.7 C (-7.1 F)
1961	-25.6 C (-14.1 F)
1962	-20.0 C (-4.0 F)
1963	-22.8 C (-9.0 F)
1964	-22.2 C (-8.0 F)
1965	-21.7 C (-7.1 F)
1966	-21.1 C (-6.0 F)
1967	-22.8 C (-9.0 F)
1968	-21.1 C (-6.0 F)
1969	-13.3 C (8.1 F)
1970	-16.1 C (3.0 F)
1971	-13.9 C (7.0 F)
1972	-16.7 C (1.9 F)
1973	-12.8 C (9.0 F)
1974	-15.0 C (5.0 F)
1975	-11.7 C (10.9 F)
1976	-15.0 C (5.0 F)
1977	-18.3 C (-0.9 F)
1978	-15.6 C (3.9 F)

Wettest day (Rx1day)

The wettest day of the year at Beltsville Plt STN 5, 1949 to 1978. The record is 167.6 mm (6.6 in) in 1955, marked on the chart; the median year is 63.3 mm (2.5 in).

Wettest day (Rx1day) at Beltsville Plt STN 5 by year
Year	Wettest day (Rx1day)
1949	44.5 mm (1.8 in)
1950	71.1 mm (2.8 in)
1951	53.6 mm (2.1 in)
1952	107.4 mm (4.2 in)
1953	72.9 mm (2.9 in)
1954	53.3 mm (2.1 in)
1955	167.6 mm (6.6 in)
1956	54.4 mm (2.1 in)
1957	51.8 mm (2.0 in)
1958	85.9 mm (3.4 in)
1959	59.7 mm (2.4 in)
1960	76.2 mm (3.0 in)
1961	47.0 mm (1.9 in)
1962	59.7 mm (2.4 in)
1963	77.5 mm (3.1 in)
1964	42.7 mm (1.7 in)
1965	50.8 mm (2.0 in)
1966	101.6 mm (4.0 in)
1967	74.9 mm (2.9 in)
1968	55.1 mm (2.2 in)
1969	97.0 mm (3.8 in)
1970	76.2 mm (3.0 in)
1971	62.2 mm (2.4 in)
1972	142.2 mm (5.6 in)
1973	50.8 mm (2.0 in)
1974	50.8 mm (2.0 in)
1975	129.5 mm (5.1 in)
1976	74.9 mm (2.9 in)
1977	64.3 mm (2.5 in)
1978	55.4 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Beltsville Plt STN 5, 1949 to 1978. The record is 235.5 mm (9.3 in) in 1975, marked on the chart; the median year is 104.1 mm (4.1 in).

Wettest five days (Rx5day) at Beltsville Plt STN 5 by year
Year	Wettest five days (Rx5day)
1949	56.7 mm (2.2 in)
1950	112.8 mm (4.4 in)
1951	124.8 mm (4.9 in)
1952	148.6 mm (5.9 in)
1953	118.6 mm (4.7 in)
1954	76.7 mm (3.0 in)
1955	183.9 mm (7.2 in)
1956	72.4 mm (2.9 in)
1957	64.3 mm (2.5 in)
1958	113.8 mm (4.5 in)
1959	65.5 mm (2.6 in)
1960	104.8 mm (4.1 in)
1961	103.3 mm (4.1 in)
1962	72.9 mm (2.9 in)
1963	142.0 mm (5.6 in)
1964	67.3 mm (2.6 in)
1965	67.8 mm (2.7 in)
1966	161.1 mm (6.3 in)
1967	156.9 mm (6.2 in)
1968	79.5 mm (3.1 in)
1969	97.0 mm (3.8 in)
1970	76.2 mm (3.0 in)
1971	94.3 mm (3.7 in)
1972	190.5 mm (7.5 in)
1973	89.1 mm (3.5 in)
1974	82.0 mm (3.2 in)
1975	235.5 mm (9.3 in)
1976	116.8 mm (4.6 in)
1977	109.5 mm (4.3 in)
1978	120.6 mm (4.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Beltsville Plt STN 5, 1949 to 1978. The record is 34 days in 1962, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at Beltsville Plt STN 5 by year
Year	Longest dry spell (CDD)
1949	18 days
1950	15 days
1951	14 days
1952	22 days
1953	18 days
1954	17 days
1955	21 days
1956	17 days
1957	25 days
1958	25 days
1959	20 days
1960	14 days
1961	15 days
1962	34 days
1963	32 days
1964	26 days
1965	15 days
1966	20 days
1967	23 days
1968	22 days
1969	17 days
1970	14 days
1971	13 days
1972	11 days
1973	15 days
1974	18 days
1975	12 days
1976	17 days
1977	30 days
1978	14 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

29 years with a frost

Across 29 years with a frost, the median last spring frost at Beltsville Plt STN 5 falls on 30 April and the median first autumn frost on 13 October, which leaves a median of 168 days between them.

Fitted over all years, the growing season changes by +4.1 days per decade at this station.

Frost dates and growing season at Beltsville Plt STN 5
Measure	Median, all years	Earliest period	Recent period (1949 to 1977)	Recent against earliest	Fitted trend
Last spring frost	30 April	n/a	30 April	n/a	-0.8 days per decade
First autumn frost	13 October	n/a	13 October	n/a	+3.3 days per decade
Growing days	168 days	n/a	168 days	n/a	+4.1 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.

Download the Data

Data for Beltsville Plt STN 5 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Beltsville Plt STN 5 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 2026-10-14 (14 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).