Record envelope, standing records and threshold days for Weston (USC00199360), Massachusetts, United States, with 73 years of record.
Key Facts for Weston
Weston (USC00199360) is a weather station in Massachusetts, United States at 42.38 latitude and -71.32 longitude, 67 m (220 ft) above sea level.
The station reports from 1896 to 1968, 73 years of record.
1,464 records set at Weston still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Weston set a daily record precipitation of 29.2 mm (1.1 in) on 28 June 1968.
About the Station
Location: Massachusetts, United States, 42.38 latitude, -71.32 longitude.
Elevation: 67 m (220 ft).
Period of record: 1896 to 1968, 73 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 Weston. 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 Weston, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.7 C (71.1 F)
-28.9 C (-20.0 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-11.7 C (10.9 F)
n/a
n/a
May
34.4 C (93.9 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
38.3 C (100.9 F)
3.9 C (39.0 F)
n/a
n/a
Aug
38.9 C (102.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
38.9 C (102.0 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-8.9 C (16.0 F)
n/a
n/a
Nov
28.9 C (84.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
22.2 C (72.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Weston still stand. 1903 holds the most, with 50.
Standing records at Weston by the year they were set
Year set
Standing records
1896
19
1897
24
1898
31
1899
30
1900
33
1901
27
1902
24
1903
50
1904
36
1905
32
1906
28
1907
16
1929
32
1930
30
1931
28
1932
24
1933
42
1934
30
1935
23
1936
30
1937
33
1938
28
1939
24
1940
23
1941
23
1942
37
1943
32
1944
27
1945
40
1946
25
1947
27
1948
32
1949
41
1950
31
1951
34
1952
22
1953
31
1954
29
1955
26
1956
33
1957
34
1958
19
1959
29
1960
15
1961
22
1962
24
1963
22
1964
30
1965
27
1966
23
1967
26
1968
6
All-Time Record Progression
3 new records
3 all-time records were set at Weston between 11 September 1954 and 4 March 1960. Each dot is a new record.
When Weston set new all-time records
Date
Kind
Detail
1954-09-11
Record daily precipitation
Record daily precipitation 194.3 mm (7.6 in)
1955-08-19
Record daily precipitation
Record daily precipitation 200.7 mm (7.9 in)
1960-03-04
Record daily snowfall
Record daily snowfall 41.9 cm (16.5 in)
Wettest Day of Each Month
Aug: 200.7 mm (7.9 in)
The wettest day on record for each calendar month at Weston. The most was 200.7 mm (7.9 in) on 19 August 1955.
Record daily precipitation for each month at Weston
Month
Record daily precipitation (mm)
Date
Jan
55.9 mm (2.2 in)
24 January 1935
Feb
64.3 mm (2.5 in)
19 February 1934
Mar
57.4 mm (2.3 in)
16 March 1900
Apr
67.8 mm (2.7 in)
28 April 1904
May
62.0 mm (2.4 in)
9 May 1954
Jun
80.5 mm (3.2 in)
21 June 1903
Jul
78.2 mm (3.1 in)
23 July 1938
Aug
200.7 mm (7.9 in)
19 August 1955
Sep
194.3 mm (7.6 in)
11 September 1954
Oct
122.4 mm (4.8 in)
6 October 1962
Nov
68.3 mm (2.7 in)
3 November 1951
Dec
83.3 mm (3.3 in)
2 December 1942
Period of Record Coverage
1896 to 1968
Complete yearUnder 90 percent of days
52 years of record at Weston, 1896 to 1968. 7 years have data for under 90 percent of days and are left out of rankings: 1896, 1907, 1929, 1932, 1946, 1967, 1968.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Weston, 1897 to 1966. Blue stripes are years cooler than the station's own mean of 9.4 C (49.0 F); red stripes are warmer. The coolest year was 1904, at 6.8 C (44.2 F), and the warmest was 1949, at 11.3 C (52.3 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Weston as warming stripes, 1897 to 1966
Year
Annual mean temperature
Difference from the station mean
1897
8.7 C
-0.69 C
1898
9.2 C
-0.26 C
1899
8.9 C
-0.51 C
1900
9.4 C
-0.01 C
1901
8.7 C
-0.74 C
1902
8.5 C
-0.98 C
1903
8.2 C
-1.26 C
1904
6.8 C
-2.65 C
1905
7.7 C
-1.72 C
1906
8.4 C
-1.02 C
1930
9.7 C
+0.23 C
1933
9.6 C
+0.19 C
1934
9.3 C
-0.11 C
1935
9.1 C
-0.30 C
1936
9.4 C
-0.07 C
1937
9.8 C
+0.39 C
1938
9.7 C
+0.24 C
1939
9.3 C
-0.11 C
1940
8.4 C
-1.02 C
1941
10.1 C
+0.70 C
1942
10.0 C
+0.59 C
1944
10.1 C
+0.69 C
1945
10.4 C
+0.94 C
1947
10.0 C
+0.59 C
1948
9.7 C
+0.26 C
1949
11.3 C
+1.84 C
1950
9.7 C
+0.24 C
1951
10.2 C
+0.76 C
1952
10.4 C
+1.01 C
1953
11.1 C
+1.68 C
1954
9.8 C
+0.40 C
1955
9.9 C
+0.44 C
1956
9.3 C
-0.13 C
1957
10.3 C
+0.88 C
1958
8.8 C
-0.68 C
1959
10.0 C
+0.53 C
1960
9.4 C
-0.04 C
1961
9.7 C
+0.23 C
1962
8.6 C
-0.85 C
1963
9.5 C
+0.09 C
1964
9.3 C
-0.15 C
1965
9.5 C
+0.06 C
1966
9.9 C
+0.51 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1897 to 1966. In Fahrenheit: 0.4 F (0.2 to 0.6) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Weston
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.4 F (0.2 to 0.6) per decade
1897 to 1966
43
Rise
Mean daily maximum
0.4 C (0.3 to 0.5) per decade
0.8 F (0.6 to 1.0) per decade
1897 to 1966
43
Rise
Mean daily minimum
0.00 C (-0.10 to 0.10) per decade
0.00 F (-0.18 to 0.18) per decade
1897 to 1966
43
Not clearly different from zero
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
1896 to 1968
Yearly extremes at Weston: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.9 C (102.0 F)
1944
34.7 C (94.5 F)
52
Coldest night (TNn)
-29.4 C (-20.9 F)
1934
-22.2 C (-8.0 F)
52
Wettest day (Rx1day)
200.7 mm (7.9 in)
1955
59.3 mm (2.3 in)
52
Wettest five days (Rx5day)
294.2 mm (11.6 in)
1955
90.3 mm (3.6 in)
52
Longest dry spell (CDD)
29 days
1930
16 days
52
Hottest day (TXx)
The hottest day of the year at Weston, 1896 to 1968. The record is 38.9 C (102.0 F) in 1944, marked on the chart; the median year is 34.7 C (94.5 F).
Hottest day (TXx) at Weston by year
Year
Hottest day (TXx)
1896
34.4 C (93.9 F)
1897
32.8 C (91.0 F)
1898
35.0 C (95.0 F)
1899
33.3 C (91.9 F)
1900
35.0 C (95.0 F)
1901
34.4 C (93.9 F)
1902
32.2 C (90.0 F)
1903
32.8 C (91.0 F)
1904
32.2 C (90.0 F)
1905
32.8 C (91.0 F)
1906
32.2 C (90.0 F)
1907
23.9 C (75.0 F)
1929
35.6 C (96.1 F)
1930
34.4 C (93.9 F)
1931
35.6 C (96.1 F)
1932
33.3 C (91.9 F)
1933
36.1 C (97.0 F)
1934
36.1 C (97.0 F)
1935
35.6 C (96.1 F)
1936
36.1 C (97.0 F)
1937
36.7 C (98.1 F)
1938
33.3 C (91.9 F)
1939
36.1 C (97.0 F)
1940
35.6 C (96.1 F)
1941
35.6 C (96.1 F)
1942
33.9 C (93.0 F)
1943
34.4 C (93.9 F)
1944
38.9 C (102.0 F)
1945
36.1 C (97.0 F)
1946
30.6 C (87.1 F)
1947
36.1 C (97.0 F)
1948
38.3 C (100.9 F)
1949
36.7 C (98.1 F)
1950
34.4 C (93.9 F)
1951
33.3 C (91.9 F)
1952
38.3 C (100.9 F)
1953
38.9 C (102.0 F)
1954
33.9 C (93.0 F)
1955
37.2 C (99.0 F)
1956
35.6 C (96.1 F)
1957
36.1 C (97.0 F)
1958
33.3 C (91.9 F)
1959
33.9 C (93.0 F)
1960
33.9 C (93.0 F)
1961
33.3 C (91.9 F)
1962
34.4 C (93.9 F)
1963
37.8 C (100.0 F)
1964
36.1 C (97.0 F)
1965
36.1 C (97.0 F)
1966
37.2 C (99.0 F)
1967
34.4 C (93.9 F)
1968
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Weston, 1896 to 1968. The record is -29.4 C (-20.9 F) in 1934, marked on the chart; the median year is -22.2 C (-8.0 F).
Coldest night (TNn) at Weston by year
Year
Coldest night (TNn)
1896
-22.2 C (-8.0 F)
1897
-20.0 C (-4.0 F)
1898
-24.4 C (-11.9 F)
1899
-25.6 C (-14.1 F)
1900
-22.2 C (-8.0 F)
1901
-21.1 C (-6.0 F)
1902
-23.9 C (-11.0 F)
1903
-23.9 C (-11.0 F)
1904
-28.9 C (-20.0 F)
1905
-22.8 C (-9.0 F)
1906
-19.4 C (-2.9 F)
1907
-27.8 C (-18.0 F)
1929
-20.6 C (-5.1 F)
1930
-22.8 C (-9.0 F)
1931
-20.6 C (-5.1 F)
1932
-21.7 C (-7.1 F)
1933
-28.9 C (-20.0 F)
1934
-29.4 C (-20.9 F)
1935
-27.8 C (-18.0 F)
1936
-23.3 C (-9.9 F)
1937
-16.1 C (3.0 F)
1938
-26.7 C (-16.1 F)
1939
-20.0 C (-4.0 F)
1940
-22.8 C (-9.0 F)
1941
-19.4 C (-2.9 F)
1942
-27.8 C (-18.0 F)
1943
-28.9 C (-20.0 F)
1944
-18.9 C (-2.0 F)
1945
-22.2 C (-8.0 F)
1946
-21.1 C (-6.0 F)
1947
-18.9 C (-2.0 F)
1948
-24.4 C (-11.9 F)
1949
-20.0 C (-4.0 F)
1950
-21.1 C (-6.0 F)
1951
-20.6 C (-5.1 F)
1952
-20.0 C (-4.0 F)
1953
-17.2 C (1.0 F)
1954
-22.8 C (-9.0 F)
1955
-22.8 C (-9.0 F)
1956
-20.0 C (-4.0 F)
1957
-28.3 C (-18.9 F)
1958
-22.8 C (-9.0 F)
1959
-21.7 C (-7.1 F)
1960
-20.0 C (-4.0 F)
1961
-25.6 C (-14.1 F)
1962
-23.9 C (-11.0 F)
1963
-21.7 C (-7.1 F)
1964
-22.2 C (-8.0 F)
1965
-23.3 C (-9.9 F)
1966
-20.0 C (-4.0 F)
1967
-25.6 C (-14.1 F)
1968
-4.4 C (24.1 F)
Wettest day (Rx1day)
The wettest day of the year at Weston, 1896 to 1968. The record is 200.7 mm (7.9 in) in 1955, marked on the chart; the median year is 59.3 mm (2.3 in).
Wettest day (Rx1day) at Weston by year
Year
Wettest day (Rx1day)
1896
80.8 mm (3.2 in)
1897
45.2 mm (1.8 in)
1898
54.1 mm (2.1 in)
1899
64.3 mm (2.5 in)
1900
58.2 mm (2.3 in)
1901
52.8 mm (2.1 in)
1902
47.8 mm (1.9 in)
1903
80.5 mm (3.2 in)
1904
100.3 mm (3.9 in)
1905
113.5 mm (4.5 in)
1906
51.6 mm (2.0 in)
1907
20.8 mm (0.8 in)
1929
49.5 mm (1.9 in)
1930
51.1 mm (2.0 in)
1931
76.2 mm (3.0 in)
1932
114.3 mm (4.5 in)
1933
75.4 mm (3.0 in)
1934
64.3 mm (2.5 in)
1935
55.9 mm (2.2 in)
1936
69.9 mm (2.8 in)
1937
54.6 mm (2.1 in)
1938
78.2 mm (3.1 in)
1939
95.5 mm (3.8 in)
1940
63.5 mm (2.5 in)
1941
49.0 mm (1.9 in)
1942
83.3 mm (3.3 in)
1943
43.2 mm (1.7 in)
1944
72.4 mm (2.9 in)
1945
57.2 mm (2.3 in)
1946
34.8 mm (1.4 in)
1947
63.0 mm (2.5 in)
1948
58.4 mm (2.3 in)
1949
101.9 mm (4.0 in)
1950
98.6 mm (3.9 in)
1951
68.3 mm (2.7 in)
1952
52.8 mm (2.1 in)
1953
60.5 mm (2.4 in)
1954
194.3 mm (7.6 in)
1955
200.7 mm (7.9 in)
1956
55.9 mm (2.2 in)
1957
33.5 mm (1.3 in)
1958
50.3 mm (2.0 in)
1959
53.3 mm (2.1 in)
1960
72.4 mm (2.9 in)
1961
63.5 mm (2.5 in)
1962
122.4 mm (4.8 in)
1963
60.2 mm (2.4 in)
1964
46.5 mm (1.8 in)
1965
35.6 mm (1.4 in)
1966
38.1 mm (1.5 in)
1967
50.3 mm (2.0 in)
1968
40.4 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Weston, 1896 to 1968. The record is 294.2 mm (11.6 in) in 1955, marked on the chart; the median year is 90.3 mm (3.6 in).
Wettest five days (Rx5day) at Weston by year
Year
Wettest five days (Rx5day)
1896
111.5 mm (4.4 in)
1897
71.1 mm (2.8 in)
1898
73.9 mm (2.9 in)
1899
77.0 mm (3.0 in)
1900
92.5 mm (3.6 in)
1901
90.7 mm (3.6 in)
1902
84.2 mm (3.3 in)
1903
90.7 mm (3.6 in)
1904
138.2 mm (5.4 in)
1905
194.8 mm (7.7 in)
1906
88.2 mm (3.5 in)
1907
59.4 mm (2.3 in)
1929
81.2 mm (3.2 in)
1930
74.0 mm (2.9 in)
1931
126.0 mm (5.0 in)
1932
160.0 mm (6.3 in)
1933
83.4 mm (3.3 in)
1934
71.9 mm (2.8 in)
1935
101.6 mm (4.0 in)
1936
95.5 mm (3.8 in)
1937
78.0 mm (3.1 in)
1938
214.0 mm (8.4 in)
1939
100.6 mm (4.0 in)
1940
94.2 mm (3.7 in)
1941
59.7 mm (2.4 in)
1942
91.7 mm (3.6 in)
1943
62.0 mm (2.4 in)
1944
119.4 mm (4.7 in)
1945
89.8 mm (3.5 in)
1946
49.0 mm (1.9 in)
1947
76.2 mm (3.0 in)
1948
72.4 mm (2.9 in)
1949
109.5 mm (4.3 in)
1950
102.6 mm (4.0 in)
1951
107.5 mm (4.2 in)
1952
77.9 mm (3.1 in)
1953
109.5 mm (4.3 in)
1954
215.6 mm (8.5 in)
1955
294.2 mm (11.6 in)
1956
117.3 mm (4.6 in)
1957
71.1 mm (2.8 in)
1958
87.8 mm (3.5 in)
1959
86.1 mm (3.4 in)
1960
93.5 mm (3.7 in)
1961
119.6 mm (4.7 in)
1962
181.3 mm (7.1 in)
1963
111.0 mm (4.4 in)
1964
60.9 mm (2.4 in)
1965
52.4 mm (2.1 in)
1966
76.0 mm (3.0 in)
1967
83.6 mm (3.3 in)
1968
72.2 mm (2.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Weston, 1896 to 1968. The record is 29 days in 1930, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Weston by year
Year
Longest dry spell (CDD)
1896
10 days
1897
14 days
1898
10 days
1899
19 days
1900
18 days
1901
18 days
1902
14 days
1903
16 days
1904
18 days
1905
15 days
1906
11 days
1907
10 days
1929
11 days
1930
29 days
1931
15 days
1932
13 days
1933
13 days
1934
16 days
1935
23 days
1936
15 days
1937
14 days
1938
20 days
1939
25 days
1940
26 days
1941
19 days
1942
13 days
1943
23 days
1944
16 days
1945
12 days
1946
18 days
1947
18 days
1948
11 days
1949
24 days
1950
16 days
1951
14 days
1952
15 days
1953
15 days
1954
14 days
1955
26 days
1956
16 days
1957
15 days
1958
21 days
1959
18 days
1960
18 days
1961
17 days
1962
13 days
1963
23 days
1964
18 days
1965
21 days
1966
13 days
1967
17 days
1968
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
43 years with a frost
Across 43 years with a frost, the median last spring frost at Weston falls on 12 May and the median first autumn frost on 27 September, which leaves a median of 140 days between them.
Fitted over all years, the growing season changes by -3.5 days per decade at this station.
Frost dates and growing season at Weston
Measure
Median, all years
Earliest period
Recent period (1935 to 1966)
Recent against earliest
Fitted trend
Last spring frost
12 May
n/a
14 May
n/a
+1.2 days per decade
First autumn frost
27 September
n/a
25 September
n/a
-2.3 days per decade
Growing days
140 days
n/a
138 days
n/a
-3.5 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
46 years, 1897 to 1967
A day with at least 60.5 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 216.1 mm (8.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Weston: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
60.5 mm (2.4 in)
5 years
83.6 mm (3.3 in)
10 years
104.5 mm (4.1 in)
25 years
139.5 mm (5.5 in)
50 years
173.5 mm (6.8 in)
Longer than the 46 years of record
100 years
216.1 mm (8.5 in)
Longer than the 46 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, 46 years of values from 1897 to 1967.
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: 200.7 mm (7.9 in) in 1955; 194.3 mm (7.6 in) in 1954; 122.4 mm (4.8 in) in 1962.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Weston, at 1930. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1930 ran 0.3 C (0.5 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Weston, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1930
+0.3
+0.5
possible
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Weston standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Weston 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.