Record envelope, standing records and threshold days for West Medway (USC00199316), Massachusetts, United States, with 48 years of record.
Key Facts for West Medway
West Medway (USC00199316) is a weather station in Massachusetts, United States at 42.13 latitude and -71.43 longitude, 64 m (210 ft) above sea level.
The station reports from 1957 to 2004, 48 years of record.
1,464 records set at West Medway still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
West Medway set a daily record snowfall of 17.8 cm (7.0 in) on 27 December 2004.
About the Station
Location: Massachusetts, United States, 42.13 latitude, -71.43 longitude.
Elevation: 64 m (210 ft).
Period of record: 1957 to 2004, 48 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 West Medway. 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 West Medway, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.0 C (68.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
34.4 C (93.9 F)
-11.7 C (10.9 F)
n/a
n/a
May
36.1 C (97.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
38.9 C (102.0 F)
3.3 C (37.9 F)
n/a
n/a
Aug
40.0 C (104.0 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-9.4 C (15.1 F)
n/a
n/a
Nov
27.8 C (82.0 F)
-18.9 C (-2.0 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-26.7 C (-16.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at West Medway still stand. 1957 holds the most, with 50.
Standing records at West Medway by the year they were set
Year set
Standing records
1957
50
1958
29
1959
43
1960
23
1961
37
1962
39
1963
40
1964
45
1965
41
1966
27
1967
44
1968
29
1969
26
1970
23
1971
26
1972
23
1973
25
1974
40
1975
33
1976
41
1977
38
1978
27
1979
48
1980
20
1981
34
1982
26
1983
20
1984
36
1985
17
1986
29
1987
36
1988
28
1989
28
1990
36
1991
40
1992
23
1993
30
1994
21
1995
24
1996
23
1997
12
1998
24
1999
29
2000
27
2001
28
2002
34
2003
31
2004
11
All-Time Record Progression
4 new records
4 all-time records were set at West Medway between 12 August 1990 and 23 July 1994. Each dot is a new record.
When West Medway set new all-time records
Date
Kind
Detail
1990-08-12
Record daily precipitation
Record daily precipitation 129.3 mm (5.1 in)
1990-10-14
Record daily precipitation
Record daily precipitation 162.3 mm (6.4 in)
1994-07-22
Record high minimum temperature
Record high minimum temperature 23.9 C (75.0 F)
1994-07-23
Record high minimum temperature
Record high minimum temperature 24.4 C (75.9 F)
Wettest Day of Each Month
Oct: 162.3 mm (6.4 in)
The wettest day on record for each calendar month at West Medway. The most was 162.3 mm (6.4 in) on 14 October 1990.
Record daily precipitation for each month at West Medway
Month
Record daily precipitation (mm)
Date
Jan
73.2 mm (2.9 in)
25 January 1979
Feb
61.7 mm (2.4 in)
25 February 1969
Mar
98.6 mm (3.9 in)
18 March 1968
Apr
79.8 mm (3.1 in)
22 April 1991
May
90.2 mm (3.6 in)
10 May 1977
Jun
117.1 mm (4.6 in)
18 June 2001
Jul
100.3 mm (3.9 in)
30 July 1980
Aug
129.3 mm (5.1 in)
12 August 1990
Sep
147.6 mm (5.8 in)
11 September 1999
Oct
162.3 mm (6.4 in)
14 October 1990
Nov
98.3 mm (3.9 in)
6 November 1985
Dec
93.2 mm (3.7 in)
12 December 1992
Period of Record Coverage
1957 to 2004
Complete yearUnder 90 percent of days
48 years of record at West Medway, 1957 to 2004. Every year has data for at least 90 percent of its days.
Cooler than the station meanWarmer than the station mean
One stripe for each of 46 complete years at West Medway, 1957 to 2004. Blue stripes are years cooler than the station's own mean of 9.2 C (48.5 F); red stripes are warmer. The coolest year was 1978, at 7.7 C (45.8 F), and the warmest was 1998, at 11.0 C (51.7 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at West Medway as warming stripes, 1957 to 2004
Year
Annual mean temperature
Difference from the station mean
1957
10.3 C
+1.09 C
1958
9.0 C
-0.20 C
1959
10.2 C
+1.07 C
1960
9.3 C
+0.13 C
1961
9.6 C
+0.44 C
1962
8.5 C
-0.64 C
1963
9.1 C
-0.11 C
1964
9.3 C
+0.11 C
1965
9.1 C
-0.09 C
1966
9.3 C
+0.13 C
1967
9.0 C
-0.20 C
1969
8.7 C
-0.43 C
1970
8.3 C
-0.92 C
1971
8.7 C
-0.45 C
1972
8.2 C
-0.93 C
1973
10.0 C
+0.86 C
1974
8.7 C
-0.47 C
1975
9.0 C
-0.13 C
1976
8.5 C
-0.68 C
1977
8.7 C
-0.46 C
1978
7.7 C
-1.50 C
1979
9.2 C
-0.01 C
1980
8.1 C
-1.03 C
1981
8.4 C
-0.82 C
1982
8.5 C
-0.69 C
1983
9.3 C
+0.12 C
1984
8.8 C
-0.39 C
1985
8.9 C
-0.29 C
1986
9.1 C
-0.05 C
1987
9.2 C
+0.02 C
1988
8.9 C
-0.29 C
1989
8.5 C
-0.69 C
1990
10.2 C
+0.99 C
1991
10.0 C
+0.78 C
1992
8.7 C
-0.49 C
1993
9.2 C
+0.07 C
1994
9.5 C
+0.37 C
1995
9.5 C
+0.33 C
1996
9.3 C
+0.14 C
1997
9.4 C
+0.20 C
1998
11.0 C
+1.80 C
1999
10.8 C
+1.60 C
2000
9.5 C
+0.29 C
2001
10.3 C
+1.15 C
2003
9.1 C
-0.08 C
2004
9.4 C
+0.23 C
The fitted trend in annual mean temperature here over 1957 to 2004 is 0.12 C (-0.03 to 0.27) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.5) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at West Medway
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.12 C (-0.03 to 0.27) per decade
0.2 F (-0.1 to 0.5) per decade
1957 to 2004
46
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.5) per decade
1957 to 2004
46
Not clearly different from zero
Mean daily minimum
0.14 C (-0.02 to 0.31) per decade
0.26 F (-0.04 to 0.56) per decade
1957 to 2004
46
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
1957 to 2004
Yearly extremes at West Medway: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1975
35.3 C (95.5 F)
48
Coldest night (TNn)
-31.7 C (-25.1 F)
1957
-23.3 C (-9.9 F)
48
Wettest day (Rx1day)
162.3 mm (6.4 in)
1990
72.0 mm (2.8 in)
48
Wettest five days (Rx5day)
192.8 mm (7.6 in)
1999
119.0 mm (4.7 in)
48
Longest dry spell (CDD)
31 days
1962
19 days
48
Hottest day (TXx)
The hottest day of the year at West Medway, 1957 to 2004. The record is 40.0 C (104.0 F) in 1975, marked on the chart; the median year is 35.3 C (95.5 F).
Hottest day (TXx) at West Medway by year
Year
Hottest day (TXx)
1957
38.3 C (100.9 F)
1958
33.9 C (93.0 F)
1959
36.1 C (97.0 F)
1960
33.3 C (91.9 F)
1961
35.0 C (95.0 F)
1962
33.9 C (93.0 F)
1963
36.7 C (98.1 F)
1964
36.7 C (98.1 F)
1965
34.4 C (93.9 F)
1966
35.6 C (96.1 F)
1967
34.4 C (93.9 F)
1968
35.6 C (96.1 F)
1969
35.6 C (96.1 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
40.0 C (104.0 F)
1976
35.0 C (95.0 F)
1977
37.8 C (100.0 F)
1978
36.1 C (97.0 F)
1979
35.0 C (95.0 F)
1980
37.8 C (100.0 F)
1981
35.0 C (95.0 F)
1982
36.7 C (98.1 F)
1983
35.6 C (96.1 F)
1984
35.0 C (95.0 F)
1985
35.0 C (95.0 F)
1986
35.0 C (95.0 F)
1987
37.8 C (100.0 F)
1988
36.7 C (98.1 F)
1989
34.4 C (93.9 F)
1990
34.4 C (93.9 F)
1991
38.9 C (102.0 F)
1992
36.1 C (97.0 F)
1993
37.8 C (100.0 F)
1994
35.6 C (96.1 F)
1995
36.7 C (98.1 F)
1996
33.9 C (93.0 F)
1997
36.1 C (97.0 F)
1998
32.8 C (91.0 F)
1999
36.7 C (98.1 F)
2000
35.0 C (95.0 F)
2001
37.2 C (99.0 F)
2002
38.3 C (100.9 F)
2003
35.0 C (95.0 F)
2004
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at West Medway, 1957 to 2004. The record is -31.7 C (-25.1 F) in 1957, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at West Medway by year
Year
Coldest night (TNn)
1957
-31.7 C (-25.1 F)
1958
-23.3 C (-9.9 F)
1959
-21.1 C (-6.0 F)
1960
-20.6 C (-5.1 F)
1961
-30.6 C (-23.1 F)
1962
-26.1 C (-15.0 F)
1963
-26.7 C (-16.1 F)
1964
-23.3 C (-9.9 F)
1965
-26.7 C (-16.1 F)
1966
-22.8 C (-9.0 F)
1967
-28.9 C (-20.0 F)
1968
-21.7 C (-7.1 F)
1969
-19.4 C (-2.9 F)
1970
-24.4 C (-11.9 F)
1971
-28.9 C (-20.0 F)
1972
-24.4 C (-11.9 F)
1973
-21.1 C (-6.0 F)
1974
-23.9 C (-11.0 F)
1975
-25.0 C (-13.0 F)
1976
-22.2 C (-8.0 F)
1977
-22.8 C (-9.0 F)
1978
-26.7 C (-16.1 F)
1979
-26.7 C (-16.1 F)
1980
-26.7 C (-16.1 F)
1981
-26.7 C (-16.1 F)
1982
-26.7 C (-16.1 F)
1983
-23.9 C (-11.0 F)
1984
-30.6 C (-23.1 F)
1985
-22.8 C (-9.0 F)
1986
-18.9 C (-2.0 F)
1987
-23.9 C (-11.0 F)
1988
-26.7 C (-16.1 F)
1989
-23.9 C (-11.0 F)
1990
-20.6 C (-5.1 F)
1991
-21.1 C (-6.0 F)
1992
-18.9 C (-2.0 F)
1993
-20.6 C (-5.1 F)
1994
-23.9 C (-11.0 F)
1995
-20.0 C (-4.0 F)
1996
-28.9 C (-20.0 F)
1997
-19.4 C (-2.9 F)
1998
-15.6 C (3.9 F)
1999
-18.9 C (-2.0 F)
2000
-21.7 C (-7.1 F)
2001
-17.8 C (0.0 F)
2002
-15.6 C (3.9 F)
2003
-21.7 C (-7.1 F)
2004
-22.8 C (-9.0 F)
Wettest day (Rx1day)
The wettest day of the year at West Medway, 1957 to 2004. The record is 162.3 mm (6.4 in) in 1990, marked on the chart; the median year is 72.0 mm (2.8 in).
Wettest day (Rx1day) at West Medway by year
Year
Wettest day (Rx1day)
1957
35.1 mm (1.4 in)
1958
63.5 mm (2.5 in)
1959
59.7 mm (2.4 in)
1960
120.7 mm (4.8 in)
1961
114.8 mm (4.5 in)
1962
96.8 mm (3.8 in)
1963
45.5 mm (1.8 in)
1964
61.0 mm (2.4 in)
1965
54.6 mm (2.1 in)
1966
46.5 mm (1.8 in)
1967
61.0 mm (2.4 in)
1968
98.6 mm (3.9 in)
1969
92.5 mm (3.6 in)
1970
55.1 mm (2.2 in)
1971
48.8 mm (1.9 in)
1972
78.2 mm (3.1 in)
1973
52.8 mm (2.1 in)
1974
69.6 mm (2.7 in)
1975
55.9 mm (2.2 in)
1976
70.1 mm (2.8 in)
1977
90.2 mm (3.6 in)
1978
88.9 mm (3.5 in)
1979
73.2 mm (2.9 in)
1980
100.3 mm (3.9 in)
1981
52.6 mm (2.1 in)
1982
65.0 mm (2.6 in)
1983
78.2 mm (3.1 in)
1984
66.3 mm (2.6 in)
1985
98.3 mm (3.9 in)
1986
79.2 mm (3.1 in)
1987
71.1 mm (2.8 in)
1988
76.7 mm (3.0 in)
1989
67.3 mm (2.6 in)
1990
162.3 mm (6.4 in)
1991
115.6 mm (4.6 in)
1992
93.2 mm (3.7 in)
1993
45.7 mm (1.8 in)
1994
60.5 mm (2.4 in)
1995
77.5 mm (3.1 in)
1996
79.2 mm (3.1 in)
1997
53.8 mm (2.1 in)
1998
114.6 mm (4.5 in)
1999
147.6 mm (5.8 in)
2000
72.9 mm (2.9 in)
2001
117.1 mm (4.6 in)
2002
61.5 mm (2.4 in)
2003
63.2 mm (2.5 in)
2004
90.4 mm (3.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at West Medway, 1957 to 2004. The record is 192.8 mm (7.6 in) in 1999, marked on the chart; the median year is 119.0 mm (4.7 in).
Wettest five days (Rx5day) at West Medway by year
Year
Wettest five days (Rx5day)
1957
78.6 mm (3.1 in)
1958
84.4 mm (3.3 in)
1959
89.2 mm (3.5 in)
1960
125.3 mm (4.9 in)
1961
165.3 mm (6.5 in)
1962
167.2 mm (6.6 in)
1963
105.9 mm (4.2 in)
1964
79.3 mm (3.1 in)
1965
57.1 mm (2.2 in)
1966
84.3 mm (3.3 in)
1967
84.6 mm (3.3 in)
1968
124.0 mm (4.9 in)
1969
131.7 mm (5.2 in)
1970
88.9 mm (3.5 in)
1971
84.1 mm (3.3 in)
1972
83.7 mm (3.3 in)
1973
90.9 mm (3.6 in)
1974
70.9 mm (2.8 in)
1975
119.4 mm (4.7 in)
1976
127.3 mm (5.0 in)
1977
93.0 mm (3.7 in)
1978
156.5 mm (6.2 in)
1979
168.2 mm (6.6 in)
1980
123.2 mm (4.9 in)
1981
97.8 mm (3.9 in)
1982
176.0 mm (6.9 in)
1983
106.6 mm (4.2 in)
1984
163.6 mm (6.4 in)
1985
128.5 mm (5.1 in)
1986
167.6 mm (6.6 in)
1987
146.4 mm (5.8 in)
1988
151.1 mm (5.9 in)
1989
164.3 mm (6.5 in)
1990
191.8 mm (7.6 in)
1991
148.3 mm (5.8 in)
1992
140.2 mm (5.5 in)
1993
78.2 mm (3.1 in)
1994
89.7 mm (3.5 in)
1995
84.3 mm (3.3 in)
1996
128.8 mm (5.1 in)
1997
73.1 mm (2.9 in)
1998
174.3 mm (6.9 in)
1999
192.8 mm (7.6 in)
2000
95.0 mm (3.7 in)
2001
118.6 mm (4.7 in)
2002
89.2 mm (3.5 in)
2003
97.1 mm (3.8 in)
2004
130.0 mm (5.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at West Medway, 1957 to 2004. The record is 31 days in 1962, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at West Medway by year
Year
Longest dry spell (CDD)
1957
22 days
1958
21 days
1959
16 days
1960
18 days
1961
21 days
1962
31 days
1963
28 days
1964
20 days
1965
20 days
1966
29 days
1967
21 days
1968
26 days
1969
16 days
1970
17 days
1971
14 days
1972
12 days
1973
23 days
1974
15 days
1975
21 days
1976
23 days
1977
21 days
1978
23 days
1979
14 days
1980
24 days
1981
19 days
1982
18 days
1983
15 days
1984
19 days
1985
14 days
1986
19 days
1987
18 days
1988
22 days
1989
15 days
1990
21 days
1991
15 days
1992
12 days
1993
13 days
1994
16 days
1995
16 days
1996
16 days
1997
18 days
1998
17 days
1999
20 days
2000
18 days
2001
26 days
2002
16 days
2003
25 days
2004
25 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
46 years with a frost
Across 46 years with a frost, the median last spring frost at West Medway falls on 14 May and the median first autumn frost on 25 September, which leaves a median of 138 days between them.
Fitted over all years, the growing season changes by +5.6 days per decade at this station.
Frost dates and growing season at West Medway
Measure
Median, all years
Earliest period
Recent period (1974 to 2004)
Recent against earliest
Fitted trend
Last spring frost
14 May
n/a
9 May
n/a
-2.8 days per decade
First autumn frost
25 September
n/a
25 September
n/a
+2.8 days per decade
Growing days
138 days
n/a
142 days
n/a
+5.6 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
48 years, 1957 to 2004
A day with at least 72.5 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 171.4 mm (6.7 in) of rain is expected about once in 100 years.
Rainfall return levels at West Medway: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
72.5 mm (2.9 in)
5 years
96.4 mm (3.8 in)
10 years
113.2 mm (4.5 in)
25 years
135.7 mm (5.3 in)
50 years
153.2 mm (6.0 in)
Longer than the 48 years of record
100 years
171.4 mm (6.7 in)
Longer than the 48 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, 48 years of values from 1957 to 2004.
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: 162.3 mm (6.4 in) in 1990; 147.6 mm (5.8 in) in 1999; 120.7 mm (4.8 in) in 1960.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for West Medway standing records by year: CSV or JSON. Field meanings are on the data page.
Data for West Medway 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.