Record envelope, standing records and threshold days for Bedford (USC00190535), Massachusetts, United States, with 53 years of record.
Key Facts for Bedford
Bedford (USC00190535) is a weather station in Massachusetts, United States at 42.48 latitude and -71.28 longitude, 49 m (160 ft) above sea level.
The station reports from 1957 to 2009, 53 years of record.
1,464 records set at Bedford still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Bedford set a daily record high minimum temperature of 13.3 C (55.9 F) on 28 April 2009.
About the Station
Location: Massachusetts, United States, 42.48 latitude, -71.28 longitude.
Elevation: 49 m (160 ft).
Period of record: 1957 to 2009, 53 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 Bedford. 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 Bedford, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.1 C (70.0 F)
-28.3 C (-18.9 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-26.1 C (-15.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-14.4 C (6.1 F)
n/a
n/a
May
35.0 C (95.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
36.7 C (98.1 F)
1.7 C (35.1 F)
n/a
n/a
Jul
37.2 C (99.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
38.3 C (100.9 F)
0.0 C (32.0 F)
n/a
n/a
Sep
35.0 C (95.0 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
26.1 C (79.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
25.0 C (77.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Bedford still stand. 1964 holds the most, with 50.
Standing records at Bedford by the year they were set
Year set
Standing records
1957
35
1958
21
1959
42
1960
24
1961
31
1962
37
1963
48
1964
50
1965
36
1966
29
1967
48
1968
35
1969
20
1970
32
1971
16
1972
22
1973
26
1974
31
1975
33
1976
48
1977
27
1978
21
1979
46
1980
20
1981
23
1982
29
1983
20
1984
26
1985
20
1986
23
1987
30
1988
28
1989
27
1990
32
1991
20
1992
24
1993
32
1994
18
1995
23
1996
28
1997
14
1998
17
1999
27
2000
32
2001
22
2002
35
2003
17
2004
15
2005
24
2006
14
2007
34
2008
22
2009
10
All-Time Record Progression
4 new records
4 all-time records were set at Bedford between 11 August 1988 and 2 August 2006. Each dot is a new record.
When Bedford set new all-time records
Date
Kind
Detail
1988-08-11
Record high minimum temperature
Record high minimum temperature 23.9 C (75.0 F)
1991-08-19
Record daily precipitation
Record daily precipitation 138.9 mm (5.5 in)
1996-10-20
Record daily precipitation
Record daily precipitation 198.9 mm (7.8 in)
2006-08-02
Record high minimum temperature
Record high minimum temperature 24.4 C (75.9 F)
Wettest Day of Each Month
Oct: 198.9 mm (7.8 in)
The wettest day on record for each calendar month at Bedford. The most was 198.9 mm (7.8 in) on 20 October 1996.
Record daily precipitation for each month at Bedford
Month
Record daily precipitation (mm)
Date
Jan
97.0 mm (3.8 in)
25 January 1979
Feb
61.0 mm (2.4 in)
9 February 1969
Mar
119.9 mm (4.7 in)
22 March 2001
Apr
87.6 mm (3.4 in)
1 April 2004
May
100.6 mm (4.0 in)
31 May 1984
Jun
148.3 mm (5.8 in)
13 June 1998
Jul
101.9 mm (4.0 in)
13 July 1996
Aug
138.9 mm (5.5 in)
19 August 1991
Sep
137.4 mm (5.4 in)
10 September 1999
Oct
198.9 mm (7.8 in)
20 October 1996
Nov
78.0 mm (3.1 in)
5 November 1985
Dec
62.0 mm (2.4 in)
12 December 1992
Period of Record Coverage
1957 to 2009
Complete yearUnder 90 percent of days
53 years of record at Bedford, 1957 to 2009. 2 years have data for under 90 percent of days and are left out of rankings: 1957, 2009.
Cooler than the station meanWarmer than the station mean
One stripe for each of 48 complete years at Bedford, 1959 to 2008. Blue stripes are years cooler than the station's own mean of 9.3 C (48.7 F); red stripes are warmer. The coolest year was 1962, at 8.0 C (46.4 F), and the warmest was 1998, at 10.9 C (51.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Bedford as warming stripes, 1959 to 2008
Year
Annual mean temperature
Difference from the station mean
1959
10.3 C
+1.02 C
1960
9.7 C
+0.46 C
1961
9.8 C
+0.53 C
1962
8.0 C
-1.27 C
1963
8.4 C
-0.93 C
1964
8.5 C
-0.79 C
1966
8.7 C
-0.54 C
1967
8.6 C
-0.65 C
1968
8.7 C
-0.63 C
1969
9.3 C
+0.05 C
1970
9.0 C
-0.28 C
1971
9.0 C
-0.24 C
1972
8.4 C
-0.85 C
1973
10.2 C
+0.89 C
1974
9.2 C
-0.08 C
1975
9.6 C
+0.33 C
1976
9.0 C
-0.32 C
1977
9.2 C
-0.06 C
1978
8.2 C
-1.07 C
1979
9.6 C
+0.36 C
1980
8.8 C
-0.51 C
1981
9.1 C
-0.15 C
1982
8.9 C
-0.37 C
1983
9.8 C
+0.47 C
1984
9.4 C
+0.15 C
1985
8.9 C
-0.42 C
1986
8.8 C
-0.46 C
1987
9.0 C
-0.30 C
1988
9.1 C
-0.15 C
1989
8.7 C
-0.56 C
1990
10.4 C
+1.07 C
1991
10.3 C
+0.98 C
1992
8.5 C
-0.77 C
1993
9.0 C
-0.26 C
1994
9.5 C
+0.20 C
1995
9.4 C
+0.11 C
1996
9.3 C
-0.02 C
1997
9.3 C
-0.01 C
1998
10.9 C
+1.59 C
1999
10.7 C
+1.41 C
2000
9.2 C
-0.06 C
2001
10.1 C
+0.78 C
2003
9.0 C
-0.33 C
2004
9.1 C
-0.21 C
2005
9.6 C
+0.27 C
2006
10.5 C
+1.21 C
2007
9.5 C
+0.17 C
2008
9.6 C
+0.36 C
The annual mean temperature here has risen by 0.16 C (0.03 to 0.28) per decade over 1959 to 2008. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Bedford
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.16 C (0.03 to 0.28) per decade
0.3 F (0.1 to 0.5) per decade
1959 to 2008
48
Rise
Mean daily maximum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.1 to 0.4) per decade
1959 to 2008
48
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.4) per decade
0.4 F (0.2 to 0.7) per decade
1959 to 2008
48
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
1957 to 2009
Yearly extremes at Bedford: 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)
1975
35.0 C (95.0 F)
53
Coldest night (TNn)
-28.3 C (-18.9 F)
1961
-22.2 C (-8.0 F)
53
Wettest day (Rx1day)
198.9 mm (7.8 in)
1996
65.0 mm (2.6 in)
53
Wettest five days (Rx5day)
253.0 mm (10.0 in)
1996
102.7 mm (4.0 in)
53
Longest dry spell (CDD)
38 days
1995
17 days
53
Hottest day (TXx)
The hottest day of the year at Bedford, 1957 to 2009. The record is 38.3 C (100.9 F) in 1975, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Bedford by year
Year
Hottest day (TXx)
1957
36.1 C (97.0 F)
1958
33.9 C (93.0 F)
1959
34.4 C (93.9 F)
1960
34.4 C (93.9 F)
1961
33.9 C (93.0 F)
1962
35.0 C (95.0 F)
1963
36.7 C (98.1 F)
1964
37.2 C (99.0 F)
1965
35.0 C (95.0 F)
1966
36.1 C (97.0 F)
1967
33.9 C (93.0 F)
1968
35.6 C (96.1 F)
1969
35.0 C (95.0 F)
1970
35.0 C (95.0 F)
1971
33.9 C (93.0 F)
1972
33.3 C (91.9 F)
1973
35.0 C (95.0 F)
1974
34.4 C (93.9 F)
1975
38.3 C (100.9 F)
1976
34.4 C (93.9 F)
1977
36.7 C (98.1 F)
1978
35.0 C (95.0 F)
1979
34.4 C (93.9 F)
1980
35.0 C (95.0 F)
1981
35.0 C (95.0 F)
1982
35.0 C (95.0 F)
1983
34.4 C (93.9 F)
1984
34.4 C (93.9 F)
1985
32.2 C (90.0 F)
1986
32.8 C (91.0 F)
1987
35.0 C (95.0 F)
1988
34.4 C (93.9 F)
1989
33.3 C (91.9 F)
1990
34.4 C (93.9 F)
1991
36.1 C (97.0 F)
1992
34.4 C (93.9 F)
1993
36.7 C (98.1 F)
1994
35.0 C (95.0 F)
1995
37.2 C (99.0 F)
1996
33.9 C (93.0 F)
1997
33.9 C (93.0 F)
1998
33.3 C (91.9 F)
1999
36.7 C (98.1 F)
2000
33.3 C (91.9 F)
2001
35.0 C (95.0 F)
2002
36.7 C (98.1 F)
2003
33.9 C (93.0 F)
2004
32.8 C (91.0 F)
2005
36.1 C (97.0 F)
2006
35.6 C (96.1 F)
2007
35.6 C (96.1 F)
2008
36.7 C (98.1 F)
2009
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Bedford, 1957 to 2009. The record is -28.3 C (-18.9 F) in 1961, marked on the chart; the median year is -22.2 C (-8.0 F).
Coldest night (TNn) at Bedford by year
Year
Coldest night (TNn)
1957
-11.7 C (10.9 F)
1958
-21.1 C (-6.0 F)
1959
-22.8 C (-9.0 F)
1960
-17.2 C (1.0 F)
1961
-28.3 C (-18.9 F)
1962
-23.9 C (-11.0 F)
1963
-27.2 C (-17.0 F)
1964
-25.0 C (-13.0 F)
1965
-22.8 C (-9.0 F)
1966
-21.7 C (-7.1 F)
1967
-26.1 C (-15.0 F)
1968
-27.8 C (-18.0 F)
1969
-19.4 C (-2.9 F)
1970
-23.3 C (-9.9 F)
1971
-25.0 C (-13.0 F)
1972
-21.7 C (-7.1 F)
1973
-21.1 C (-6.0 F)
1974
-24.4 C (-11.9 F)
1975
-22.8 C (-9.0 F)
1976
-22.8 C (-9.0 F)
1977
-20.0 C (-4.0 F)
1978
-22.2 C (-8.0 F)
1979
-22.2 C (-8.0 F)
1980
-26.1 C (-15.0 F)
1981
-24.4 C (-11.9 F)
1982
-24.4 C (-11.9 F)
1983
-21.7 C (-7.1 F)
1984
-28.3 C (-18.9 F)
1985
-17.8 C (0.0 F)
1986
-19.4 C (-2.9 F)
1987
-21.7 C (-7.1 F)
1988
-23.9 C (-11.0 F)
1989
-23.3 C (-9.9 F)
1990
-18.9 C (-2.0 F)
1991
-20.0 C (-4.0 F)
1992
-18.9 C (-2.0 F)
1993
-21.7 C (-7.1 F)
1994
-26.1 C (-15.0 F)
1995
-21.1 C (-6.0 F)
1996
-25.6 C (-14.1 F)
1997
-19.4 C (-2.9 F)
1998
-23.3 C (-9.9 F)
1999
-18.9 C (-2.0 F)
2000
-21.1 C (-6.0 F)
2001
-16.7 C (1.9 F)
2002
-14.4 C (6.1 F)
2003
-25.6 C (-14.1 F)
2004
-23.3 C (-9.9 F)
2005
-21.7 C (-7.1 F)
2006
-15.0 C (5.0 F)
2007
-18.3 C (-0.9 F)
2008
-18.9 C (-2.0 F)
2009
-22.2 C (-8.0 F)
Wettest day (Rx1day)
The wettest day of the year at Bedford, 1957 to 2009. The record is 198.9 mm (7.8 in) in 1996, marked on the chart; the median year is 65.0 mm (2.6 in).
Wettest day (Rx1day) at Bedford by year
Year
Wettest day (Rx1day)
1957
32.5 mm (1.3 in)
1958
68.8 mm (2.7 in)
1959
42.7 mm (1.7 in)
1960
95.3 mm (3.8 in)
1961
86.6 mm (3.4 in)
1962
102.4 mm (4.0 in)
1963
65.3 mm (2.6 in)
1964
45.5 mm (1.8 in)
1965
42.7 mm (1.7 in)
1966
42.7 mm (1.7 in)
1967
56.9 mm (2.2 in)
1968
80.8 mm (3.2 in)
1969
61.0 mm (2.4 in)
1970
61.0 mm (2.4 in)
1971
43.9 mm (1.7 in)
1972
72.4 mm (2.9 in)
1973
77.7 mm (3.1 in)
1974
68.1 mm (2.7 in)
1975
54.6 mm (2.1 in)
1976
50.8 mm (2.0 in)
1977
81.0 mm (3.2 in)
1978
50.8 mm (2.0 in)
1979
97.0 mm (3.8 in)
1980
75.2 mm (3.0 in)
1981
59.7 mm (2.4 in)
1982
77.5 mm (3.1 in)
1983
63.8 mm (2.5 in)
1984
100.6 mm (4.0 in)
1985
78.0 mm (3.1 in)
1986
61.2 mm (2.4 in)
1987
64.5 mm (2.5 in)
1988
65.0 mm (2.6 in)
1989
61.0 mm (2.4 in)
1990
67.6 mm (2.7 in)
1991
138.9 mm (5.5 in)
1992
62.0 mm (2.4 in)
1993
55.6 mm (2.2 in)
1994
94.2 mm (3.7 in)
1995
52.1 mm (2.1 in)
1996
198.9 mm (7.8 in)
1997
58.7 mm (2.3 in)
1998
148.3 mm (5.8 in)
1999
137.4 mm (5.4 in)
2000
59.4 mm (2.3 in)
2001
119.9 mm (4.7 in)
2002
59.7 mm (2.4 in)
2003
52.8 mm (2.1 in)
2004
87.6 mm (3.4 in)
2005
78.2 mm (3.1 in)
2006
87.6 mm (3.4 in)
2007
53.8 mm (2.1 in)
2008
96.8 mm (3.8 in)
2009
36.1 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Bedford, 1957 to 2009. The record is 253.0 mm (10.0 in) in 1996, marked on the chart; the median year is 102.7 mm (4.0 in).
Wettest five days (Rx5day) at Bedford by year
Year
Wettest five days (Rx5day)
1957
75.5 mm (3.0 in)
1958
95.0 mm (3.7 in)
1959
73.4 mm (2.9 in)
1960
102.7 mm (4.0 in)
1961
129.5 mm (5.1 in)
1962
210.1 mm (8.3 in)
1963
127.6 mm (5.0 in)
1964
70.3 mm (2.8 in)
1965
48.3 mm (1.9 in)
1966
77.2 mm (3.0 in)
1967
83.1 mm (3.3 in)
1968
116.7 mm (4.6 in)
1969
120.1 mm (4.7 in)
1970
88.6 mm (3.5 in)
1971
81.7 mm (3.2 in)
1972
95.5 mm (3.8 in)
1973
114.3 mm (4.5 in)
1974
77.3 mm (3.0 in)
1975
109.1 mm (4.3 in)
1976
91.6 mm (3.6 in)
1977
116.8 mm (4.6 in)
1978
74.8 mm (2.9 in)
1979
167.2 mm (6.6 in)
1980
76.5 mm (3.0 in)
1981
108.4 mm (4.3 in)
1982
197.9 mm (7.8 in)
1983
96.5 mm (3.8 in)
1984
193.1 mm (7.6 in)
1985
84.6 mm (3.3 in)
1986
87.8 mm (3.5 in)
1987
146.3 mm (5.8 in)
1988
84.5 mm (3.3 in)
1989
97.1 mm (3.8 in)
1990
96.3 mm (3.8 in)
1991
167.4 mm (6.6 in)
1992
105.2 mm (4.1 in)
1993
76.7 mm (3.0 in)
1994
112.0 mm (4.4 in)
1995
89.5 mm (3.5 in)
1996
253.0 mm (10.0 in)
1997
101.1 mm (4.0 in)
1998
218.4 mm (8.6 in)
1999
147.3 mm (5.8 in)
2000
108.8 mm (4.3 in)
2001
134.7 mm (5.3 in)
2002
78.3 mm (3.1 in)
2003
85.2 mm (3.4 in)
2004
142.7 mm (5.6 in)
2005
135.9 mm (5.4 in)
2006
204.2 mm (8.0 in)
2007
103.6 mm (4.1 in)
2008
133.7 mm (5.3 in)
2009
47.8 mm (1.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Bedford, 1957 to 2009. The record is 38 days in 1995, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Bedford by year
Year
Longest dry spell (CDD)
1957
17 days
1958
16 days
1959
15 days
1960
18 days
1961
17 days
1962
13 days
1963
24 days
1964
21 days
1965
22 days
1966
12 days
1967
14 days
1968
21 days
1969
22 days
1970
14 days
1971
14 days
1972
10 days
1973
15 days
1974
16 days
1975
22 days
1976
22 days
1977
14 days
1978
23 days
1979
13 days
1980
24 days
1981
14 days
1982
18 days
1983
20 days
1984
19 days
1985
17 days
1986
15 days
1987
19 days
1988
16 days
1989
14 days
1990
15 days
1991
12 days
1992
12 days
1993
13 days
1994
17 days
1995
38 days
1996
11 days
1997
17 days
1998
17 days
1999
18 days
2000
11 days
2001
17 days
2002
13 days
2003
15 days
2004
14 days
2005
17 days
2006
17 days
2007
20 days
2008
17 days
2009
8 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
48 years with a frost
Across 48 years with a frost, the median last spring frost at Bedford falls on 3 May and the median first autumn frost on 7 October, which leaves a median of 156 days between them.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
Frost dates and growing season at Bedford
Measure
Median, all years
Earliest period
Recent period (1978 to 2008)
Recent against earliest
Fitted trend
Last spring frost
3 May
n/a
3 May
n/a
-0.9 days per decade
First autumn frost
7 October
n/a
7 October
n/a
+1.7 days per decade
Growing days
156 days
n/a
156 days
n/a
+2.6 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
51 years, 1958 to 2008
A day with at least 67.6 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 199.1 mm (7.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Bedford: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
67.6 mm (2.7 in)
5 years
91.3 mm (3.6 in)
10 years
110.7 mm (4.4 in)
25 years
140.7 mm (5.5 in)
50 years
167.7 mm (6.6 in)
100 years
199.1 mm (7.8 in)
Longer than the 51 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, 51 years of values from 1958 to 2008.
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: 198.9 mm (7.8 in) in 1996; 148.3 mm (5.8 in) in 1998; 138.9 mm (5.5 in) in 1991.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Bedford standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Bedford 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.