Record envelope, standing records and threshold days for Back Bay Wr (USC00440385), Virginia, United States, with 55 years of record.
Key Facts for Back Bay Wr
Back Bay Wr (USC00440385) is a weather station in Virginia, United States at 36.66 latitude and -75.91 longitude, 3 m (10 ft) above sea level.
The station reports from 1953 to 2007, 55 years of record.
1,464 records set at Back Bay Wr still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Back Bay Wr tied a daily record low minimum temperature of 6.1 C (43.0 F) on 14 May 2007.
About the Station
Location: Virginia, United States, 36.66 latitude, -75.91 longitude.
Elevation: 3 m (10 ft).
Period of record: 1953 to 2007, 55 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Back Bay Wr. 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 Back Bay Wr, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
25.6 C (78.1 F)
-23.9 C (-11.0 F)
n/a
n/a
Feb
27.2 C (81.0 F)
-12.8 C (9.0 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-9.4 C (15.1 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-3.9 C (25.0 F)
n/a
n/a
May
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
36.7 C (98.1 F)
6.7 C (44.1 F)
n/a
n/a
Jul
39.4 C (102.9 F)
11.1 C (52.0 F)
n/a
n/a
Aug
38.9 C (102.0 F)
7.8 C (46.0 F)
n/a
n/a
Sep
37.2 C (99.0 F)
7.8 C (46.0 F)
n/a
n/a
Oct
33.9 C (93.0 F)
-1.1 C (30.0 F)
n/a
n/a
Nov
30.0 C (86.0 F)
-8.9 C (16.0 F)
n/a
n/a
Dec
27.2 C (81.0 F)
-15.0 C (5.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Back Bay Wr still stand. 1964 holds the most, with 50.
Standing records at Back Bay Wr by the year they were set
Year set
Standing records
1953
2
1954
33
1955
26
1956
39
1957
28
1958
30
1959
33
1960
46
1961
26
1962
26
1963
39
1964
50
1965
32
1966
30
1967
49
1968
20
1969
12
1970
19
1971
30
1972
24
1973
25
1974
47
1975
16
1976
38
1977
42
1978
23
1979
24
1980
26
1981
30
1982
21
1983
28
1984
34
1985
40
1986
31
1987
16
1988
22
1989
25
1990
25
1991
34
1992
17
1993
21
1994
7
1995
13
1996
17
1997
23
1998
27
1999
22
2000
26
2001
29
2002
32
2003
16
2004
15
2005
28
2006
19
2007
11
All-Time Record Progression
5 new records
5 all-time records were set at Back Bay Wr between 21 January 1985 and 15 July 1992. Each dot is a new record.
When Back Bay Wr set new all-time records
Date
Kind
Detail
1985-01-21
Record low maximum temperature
Record low maximum temperature -7.8 C (18.0 F)
1985-01-21
Record low minimum temperature
Record low minimum temperature -23.9 C (-11.0 F)
1985-01-22
Record low maximum temperature
Record low maximum temperature -9.4 C (15.1 F)
1989-02-18
Record daily snowfall
Record daily snowfall 25.4 cm (10.0 in)
1992-07-15
Record high minimum temperature
Record high minimum temperature 31.7 C (89.1 F)
Wettest Day of Each Month
Sep: 284.5 mm (11.2 in)
The wettest day on record for each calendar month at Back Bay Wr. The most was 284.5 mm (11.2 in) on 1 September 1964.
Record daily precipitation for each month at Back Bay Wr
Month
Record daily precipitation (mm)
Date
Jan
97.8 mm (3.9 in)
1 January 1987
Feb
78.7 mm (3.1 in)
18 February 2003
Mar
109.2 mm (4.3 in)
14 March 2002
Apr
57.7 mm (2.3 in)
18 April 2000
May
80.0 mm (3.1 in)
4 May 1972
Jun
111.8 mm (4.4 in)
2 June 1963
Jul
111.0 mm (4.4 in)
19 July 1996
Aug
152.4 mm (6.0 in)
11 August 1967
Sep
284.5 mm (11.2 in)
1 September 1964
Oct
198.6 mm (7.8 in)
18 October 1999
Nov
87.6 mm (3.4 in)
12 November 2002
Dec
80.0 mm (3.1 in)
11 December 2003
Period of Record Coverage
1953 to 2007
Complete yearUnder 90 percent of days
55 years of record at Back Bay Wr, 1953 to 2007. 27 years have data for under 90 percent of days and are left out of rankings: 1953, 1961, 1965, 1971, 1975, 1976, 1987, 1988 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 28 complete years at Back Bay Wr, 1954 to 1987. Blue stripes are years cooler than the station's own mean of 15.4 C (59.8 F); red stripes are warmer. The coolest year was 1958, at 14.5 C (58.0 F), and the warmest was 1957, at 16.5 C (61.7 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Back Bay Wr as warming stripes, 1954 to 1987
Year
Annual mean temperature
Difference from the station mean
1954
15.8 C
+0.35 C
1955
15.4 C
-0.01 C
1956
15.9 C
+0.47 C
1957
16.5 C
+1.04 C
1958
14.5 C
-0.98 C
1959
16.0 C
+0.51 C
1960
15.1 C
-0.37 C
1962
15.0 C
-0.44 C
1963
14.8 C
-0.66 C
1964
15.6 C
+0.20 C
1966
15.0 C
-0.49 C
1967
14.9 C
-0.50 C
1968
15.3 C
-0.19 C
1969
14.8 C
-0.69 C
1970
15.4 C
-0.06 C
1971
15.8 C
+0.35 C
1972
15.8 C
+0.31 C
1973
16.2 C
+0.75 C
1974
16.4 C
+0.96 C
1978
14.7 C
-0.78 C
1979
15.4 C
-0.08 C
1980
15.7 C
+0.25 C
1982
15.3 C
-0.19 C
1983
15.3 C
-0.11 C
1984
15.2 C
-0.28 C
1985
15.6 C
+0.13 C
1986
15.8 C
+0.34 C
1987
15.5 C
+0.07 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
1953 to 2007
Yearly extremes at Back Bay Wr: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
1957
35.6 C (96.1 F)
55
Coldest night (TNn)
-23.9 C (-11.0 F)
1985
-8.9 C (16.0 F)
55
Wettest day (Rx1day)
284.5 mm (11.2 in)
1964
74.4 mm (2.9 in)
55
Wettest five days (Rx5day)
364.0 mm (14.3 in)
1964
104.6 mm (4.1 in)
55
Longest dry spell (CDD)
35 days
1965
19 days
55
Hottest day (TXx)
The hottest day of the year at Back Bay Wr, 1953 to 2007. The record is 39.4 C (102.9 F) in 1957, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Back Bay Wr by year
Year
Hottest day (TXx)
1953
20.0 C (68.0 F)
1954
35.6 C (96.1 F)
1955
35.0 C (95.0 F)
1956
34.4 C (93.9 F)
1957
39.4 C (102.9 F)
1958
33.3 C (91.9 F)
1959
34.4 C (93.9 F)
1960
33.3 C (91.9 F)
1961
35.0 C (95.0 F)
1962
33.9 C (93.0 F)
1963
34.4 C (93.9 F)
1964
36.1 C (97.0 F)
1965
33.3 C (91.9 F)
1966
33.9 C (93.0 F)
1967
36.7 C (98.1 F)
1968
35.0 C (95.0 F)
1969
35.0 C (95.0 F)
1970
35.0 C (95.0 F)
1971
34.4 C (93.9 F)
1972
35.0 C (95.0 F)
1973
33.9 C (93.0 F)
1974
34.4 C (93.9 F)
1975
35.0 C (95.0 F)
1976
33.9 C (93.0 F)
1977
36.7 C (98.1 F)
1978
35.0 C (95.0 F)
1979
34.4 C (93.9 F)
1980
38.9 C (102.0 F)
1981
36.1 C (97.0 F)
1982
33.3 C (91.9 F)
1983
36.7 C (98.1 F)
1984
36.7 C (98.1 F)
1985
35.6 C (96.1 F)
1986
36.1 C (97.0 F)
1987
36.7 C (98.1 F)
1988
36.1 C (97.0 F)
1989
35.6 C (96.1 F)
1990
35.6 C (96.1 F)
1991
37.2 C (99.0 F)
1992
37.8 C (100.0 F)
1993
37.2 C (99.0 F)
1994
35.0 C (95.0 F)
1995
36.7 C (98.1 F)
1996
36.7 C (98.1 F)
1997
36.7 C (98.1 F)
1998
36.7 C (98.1 F)
1999
36.7 C (98.1 F)
2000
35.6 C (96.1 F)
2001
35.6 C (96.1 F)
2002
37.2 C (99.0 F)
2003
36.7 C (98.1 F)
2004
36.7 C (98.1 F)
2005
37.2 C (99.0 F)
2006
38.9 C (102.0 F)
2007
31.1 C (88.0 F)
Coldest night (TNn)
The coldest night of the year at Back Bay Wr, 1953 to 2007. The record is -23.9 C (-11.0 F) in 1985, marked on the chart; the median year is -8.9 C (16.0 F).
Coldest night (TNn) at Back Bay Wr by year
Year
Coldest night (TNn)
1953
-5.0 C (23.0 F)
1954
-7.8 C (18.0 F)
1955
-11.7 C (10.9 F)
1956
-5.0 C (23.0 F)
1957
-8.3 C (17.1 F)
1958
-11.7 C (10.9 F)
1959
-9.4 C (15.1 F)
1960
-10.6 C (12.9 F)
1961
-11.7 C (10.9 F)
1962
-10.0 C (14.0 F)
1963
-8.9 C (16.0 F)
1964
-6.1 C (21.0 F)
1965
-8.9 C (16.0 F)
1966
-11.1 C (12.0 F)
1967
-10.6 C (12.9 F)
1968
-7.8 C (18.0 F)
1969
-6.7 C (19.9 F)
1970
-13.3 C (8.1 F)
1971
-8.3 C (17.1 F)
1972
-13.3 C (8.1 F)
1973
-9.4 C (15.1 F)
1974
-3.9 C (25.0 F)
1975
-7.8 C (18.0 F)
1976
-8.9 C (16.0 F)
1977
-16.1 C (3.0 F)
1978
-11.1 C (12.0 F)
1979
-11.1 C (12.0 F)
1980
-9.4 C (15.1 F)
1981
-12.8 C (9.0 F)
1982
-13.3 C (8.1 F)
1983
-15.0 C (5.0 F)
1984
-12.2 C (10.0 F)
1985
-23.9 C (-11.0 F)
1986
-9.4 C (15.1 F)
1987
-8.3 C (17.1 F)
1988
-8.9 C (16.0 F)
1989
-11.1 C (12.0 F)
1990
-5.6 C (21.9 F)
1991
-7.8 C (18.0 F)
1992
-4.4 C (24.1 F)
1993
-6.7 C (19.9 F)
1994
-13.9 C (7.0 F)
1995
-12.2 C (10.0 F)
1996
-12.2 C (10.0 F)
1997
-7.8 C (18.0 F)
1998
-4.4 C (24.1 F)
1999
-8.3 C (17.1 F)
2000
-12.2 C (10.0 F)
2001
-6.1 C (21.0 F)
2002
-6.1 C (21.0 F)
2003
-9.4 C (15.1 F)
2004
-7.2 C (19.0 F)
2005
-7.2 C (19.0 F)
2006
-3.3 C (26.1 F)
2007
-7.8 C (18.0 F)
Wettest day (Rx1day)
The wettest day of the year at Back Bay Wr, 1953 to 2007. The record is 284.5 mm (11.2 in) in 1964, marked on the chart; the median year is 74.4 mm (2.9 in).
Wettest day (Rx1day) at Back Bay Wr by year
Year
Wettest day (Rx1day)
1953
21.1 mm (0.8 in)
1954
49.8 mm (2.0 in)
1955
40.6 mm (1.6 in)
1956
72.1 mm (2.8 in)
1957
101.6 mm (4.0 in)
1958
129.5 mm (5.1 in)
1959
49.5 mm (1.9 in)
1960
73.2 mm (2.9 in)
1961
80.8 mm (3.2 in)
1962
108.0 mm (4.3 in)
1963
111.8 mm (4.4 in)
1964
284.5 mm (11.2 in)
1965
77.5 mm (3.1 in)
1966
53.3 mm (2.1 in)
1967
152.4 mm (6.0 in)
1968
80.3 mm (3.2 in)
1969
67.3 mm (2.6 in)
1970
58.4 mm (2.3 in)
1971
95.3 mm (3.8 in)
1972
80.0 mm (3.1 in)
1973
46.7 mm (1.8 in)
1974
53.3 mm (2.1 in)
1975
80.0 mm (3.1 in)
1976
81.3 mm (3.2 in)
1977
75.4 mm (3.0 in)
1978
67.3 mm (2.6 in)
1979
68.6 mm (2.7 in)
1980
59.7 mm (2.4 in)
1981
90.2 mm (3.6 in)
1982
67.1 mm (2.6 in)
1983
64.3 mm (2.5 in)
1984
76.2 mm (3.0 in)
1985
103.4 mm (4.1 in)
1986
44.7 mm (1.8 in)
1987
97.8 mm (3.9 in)
1988
86.6 mm (3.4 in)
1989
92.5 mm (3.6 in)
1990
91.7 mm (3.6 in)
1991
66.0 mm (2.6 in)
1992
44.5 mm (1.8 in)
1993
61.0 mm (2.4 in)
1994
66.8 mm (2.6 in)
1995
48.5 mm (1.9 in)
1996
120.9 mm (4.8 in)
1997
51.1 mm (2.0 in)
1998
73.4 mm (2.9 in)
1999
198.6 mm (7.8 in)
2000
79.2 mm (3.1 in)
2001
52.1 mm (2.1 in)
2002
109.2 mm (4.3 in)
2003
80.0 mm (3.1 in)
2004
101.6 mm (4.0 in)
2005
59.7 mm (2.4 in)
2006
74.4 mm (2.9 in)
2007
23.1 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Back Bay Wr, 1953 to 2007. The record is 364.0 mm (14.3 in) in 1964, marked on the chart; the median year is 104.6 mm (4.1 in).
Wettest five days (Rx5day) at Back Bay Wr by year
Year
Wettest five days (Rx5day)
1953
33.6 mm (1.3 in)
1954
97.8 mm (3.9 in)
1955
77.1 mm (3.0 in)
1956
133.6 mm (5.3 in)
1957
228.1 mm (9.0 in)
1958
195.3 mm (7.7 in)
1959
104.6 mm (4.1 in)
1960
110.6 mm (4.4 in)
1961
99.8 mm (3.9 in)
1962
145.3 mm (5.7 in)
1963
174.8 mm (6.9 in)
1964
364.0 mm (14.3 in)
1965
91.3 mm (3.6 in)
1966
91.5 mm (3.6 in)
1967
227.3 mm (8.9 in)
1968
124.0 mm (4.9 in)
1969
123.2 mm (4.9 in)
1970
88.4 mm (3.5 in)
1971
178.3 mm (7.0 in)
1972
90.2 mm (3.6 in)
1973
63.8 mm (2.5 in)
1974
93.2 mm (3.7 in)
1975
96.0 mm (3.8 in)
1976
117.1 mm (4.6 in)
1977
123.7 mm (4.9 in)
1978
106.0 mm (4.2 in)
1979
101.1 mm (4.0 in)
1980
97.2 mm (3.8 in)
1981
136.8 mm (5.4 in)
1982
121.4 mm (4.8 in)
1983
101.9 mm (4.0 in)
1984
105.2 mm (4.1 in)
1985
127.8 mm (5.0 in)
1986
104.4 mm (4.1 in)
1987
118.7 mm (4.7 in)
1988
86.6 mm (3.4 in)
1989
164.9 mm (6.5 in)
1990
142.5 mm (5.6 in)
1991
79.7 mm (3.1 in)
1992
65.8 mm (2.6 in)
1993
62.5 mm (2.5 in)
1994
83.1 mm (3.3 in)
1995
79.0 mm (3.1 in)
1996
120.9 mm (4.8 in)
1997
71.7 mm (2.8 in)
1998
73.4 mm (2.9 in)
1999
208.8 mm (8.2 in)
2000
127.0 mm (5.0 in)
2001
63.2 mm (2.5 in)
2002
135.6 mm (5.3 in)
2003
110.3 mm (4.3 in)
2004
186.7 mm (7.4 in)
2005
63.7 mm (2.5 in)
2006
65.0 mm (2.6 in)
2007
30.3 mm (1.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Back Bay Wr, 1953 to 2007. The record is 35 days in 1965, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Back Bay Wr by year
Year
Longest dry spell (CDD)
1953
6 days
1954
24 days
1955
20 days
1956
17 days
1957
21 days
1958
25 days
1959
14 days
1960
14 days
1961
26 days
1962
26 days
1963
18 days
1964
20 days
1965
35 days
1966
25 days
1967
19 days
1968
16 days
1969
17 days
1970
18 days
1971
19 days
1972
12 days
1973
25 days
1974
27 days
1975
19 days
1976
19 days
1977
29 days
1978
18 days
1979
16 days
1980
23 days
1981
22 days
1982
15 days
1983
14 days
1984
21 days
1985
22 days
1986
30 days
1987
23 days
1988
23 days
1989
14 days
1990
17 days
1991
26 days
1992
18 days
1993
22 days
1994
25 days
1995
15 days
1996
11 days
1997
16 days
1998
24 days
1999
19 days
2000
34 days
2001
29 days
2002
23 days
2003
13 days
2004
16 days
2005
19 days
2006
14 days
2007
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
28 years with a frost
Across 28 years with a frost, the median last spring frost at Back Bay Wr falls on 23 March and the median first autumn frost on 24 November, which leaves a median of 242 days between them.
Fitted over all years, the growing season changes by -8.7 days per decade at this station.
Frost dates and growing season at Back Bay Wr
Measure
Median, all years
Earliest period
Recent period (1954 to 1987)
Recent against earliest
Fitted trend
Last spring frost
23 March
n/a
23 March
n/a
+6.5 days per decade
First autumn frost
24 November
n/a
24 November
n/a
-2.2 days per decade
Growing days
242 days
n/a
242 days
n/a
-8.7 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
35 years, 1954 to 2001
A day with at least 71.0 mm (2.8 in) of rain is expected about once in 2 years. A day with at least 249.7 mm (9.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Back Bay Wr: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
71.0 mm (2.8 in)
5 years
99.3 mm (3.9 in)
10 years
124.1 mm (4.9 in)
25 years
164.5 mm (6.5 in)
50 years
202.8 mm (8.0 in)
Longer than the 35 years of record
100 years
249.7 mm (9.8 in)
Longer than the 35 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, 35 years of values from 1954 to 2001.
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: 284.5 mm (11.2 in) in 1964; 152.4 mm (6.0 in) in 1967; 129.5 mm (5.1 in) in 1958.
Download the Data
Data for Back Bay Wr standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Back Bay Wr 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.