Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Suffield A. 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 Suffield A, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.6 C (61.9 F)
-41.7 C (-43.1 F)
n/a
n/a
Feb
16.1 C (61.0 F)
-36.1 C (-33.0 F)
n/a
n/a
Mar
24.4 C (75.9 F)
-40.0 C (-40.0 F)
n/a
n/a
Apr
30.1 C (86.2 F)
-24.4 C (-11.9 F)
n/a
n/a
May
33.9 C (93.0 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
38.3 C (100.9 F)
1.7 C (35.1 F)
n/a
n/a
Aug
40.6 C (105.1 F)
-1.0 C (30.2 F)
n/a
n/a
Sep
36.1 C (97.0 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
32.1 C (89.8 F)
-18.3 C (-0.9 F)
n/a
n/a
Nov
23.6 C (74.5 F)
-31.7 C (-25.1 F)
n/a
n/a
Dec
16.7 C (62.1 F)
-45.6 C (-50.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Suffield A still stand. 1951 holds the most, with 90.
Standing records at Suffield A by the year they were set
Year set
Standing records
1950
35
1951
90
1952
32
1953
37
1954
63
1955
46
1956
40
1957
53
1958
37
1959
40
1960
38
1961
65
1962
54
1963
50
1964
37
1965
42
1966
30
1967
45
1968
59
1969
50
1970
25
1971
30
1972
44
1973
38
1974
20
1975
39
1976
31
1977
44
1978
28
1979
39
1980
40
1981
53
1982
34
1983
56
All-Time Record Progression
1 new records
1 all-time records were set at Suffield A between 18 October 1982 and 18 October 1982. Each dot is a new record.
When Suffield A set new all-time records
Date
Kind
Detail
1982-10-18
Record daily snowfall
Record daily snowfall 37.1 cm (14.6 in)
Wettest Day of Each Month
Jun: 80.5 mm (3.2 in)
The wettest day on record for each calendar month at Suffield A. The most was 80.5 mm (3.2 in) on 15 June 1973.
Record daily precipitation for each month at Suffield A
Month
Record daily precipitation (mm)
Date
Jan
21.6 mm (0.9 in)
5 January 1967
Feb
15.2 mm (0.6 in)
17 February 1952
Mar
17.8 mm (0.7 in)
11 March 1954
Apr
38.9 mm (1.5 in)
25 April 1976
May
38.6 mm (1.5 in)
25 May 1980
Jun
80.5 mm (3.2 in)
15 June 1973
Jul
54.6 mm (2.1 in)
29 July 1950
Aug
46.2 mm (1.8 in)
24 August 1954
Sep
50.5 mm (2.0 in)
11 September 1978
Oct
39.4 mm (1.6 in)
13 October 1966
Nov
16.3 mm (0.6 in)
14 November 1958
Dec
12.7 mm (0.5 in)
2 December 1956
Period of Record Coverage
1950 to 1983
Complete yearUnder 90 percent of days
34 years of record at Suffield A, 1950 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1950.
Cooler than the station meanWarmer than the station mean
One stripe for each of 33 complete years at Suffield A, 1951 to 1983. Blue stripes are years cooler than the station's own mean of 4.5 C (40.0 F); red stripes are warmer. The coolest year was 1951, at 1.1 C (34.1 F), and the warmest was 1981, at 7.0 C (44.7 F). The strongest colour marks a difference of 3.4 C (6.1 F).
Annual mean temperature at Suffield A as warming stripes, 1951 to 1983
Year
Annual mean temperature
Difference from the station mean
1951
1.1 C
-3.32 C
1952
4.2 C
-0.25 C
1953
5.4 C
+0.91 C
1954
4.0 C
-0.51 C
1955
2.5 C
-1.98 C
1956
3.9 C
-0.61 C
1957
4.6 C
+0.11 C
1958
5.4 C
+0.98 C
1959
4.2 C
-0.31 C
1960
4.7 C
+0.23 C
1961
6.2 C
+1.70 C
1962
5.7 C
+1.24 C
1963
6.5 C
+1.99 C
1964
5.1 C
+0.68 C
1965
3.8 C
-0.68 C
1966
4.0 C
-0.47 C
1967
4.9 C
+0.44 C
1968
5.5 C
+0.99 C
1969
3.8 C
-0.69 C
1970
3.9 C
-0.59 C
1971
3.6 C
-0.89 C
1972
3.0 C
-1.48 C
1973
4.9 C
+0.44 C
1974
5.1 C
+0.59 C
1975
3.0 C
-1.50 C
1976
5.9 C
+1.44 C
1977
5.2 C
+0.73 C
1978
3.0 C
-1.45 C
1979
4.2 C
-0.29 C
1980
5.0 C
+0.54 C
1981
7.0 C
+2.58 C
1982
3.1 C
-1.34 C
1983
5.3 C
+0.88 C
The fitted trend in annual mean temperature here over 1951 to 1983 is 0.2 C (-0.2 to 0.7) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.4 F (-0.4 to 1.2) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Suffield A
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (-0.2 to 0.7) per decade
0.4 F (-0.4 to 1.2) per decade
1951 to 1983
33
Not clearly different from zero
Mean daily maximum
0.2 C (-0.3 to 0.7) per decade
0.4 F (-0.6 to 1.3) per decade
1951 to 1983
33
Not clearly different from zero
Mean daily minimum
0.3 C (-0.2 to 0.7) per decade
0.5 F (-0.3 to 1.2) per decade
1951 to 1983
33
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
1950 to 1983
Yearly extremes at Suffield A: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1961
35.6 C (96.1 F)
34
Coldest night (TNn)
-45.6 C (-50.1 F)
1968
-36.4 C (-33.5 F)
34
Wettest day (Rx1day)
80.5 mm (3.2 in)
1973
33.9 mm (1.3 in)
34
Wettest five days (Rx5day)
133.1 mm (5.2 in)
1970
46.5 mm (1.8 in)
34
Longest dry spell (CDD)
63 days
1963
35 days
34
Hottest day (TXx)
The hottest day of the year at Suffield A, 1950 to 1983. The record is 40.6 C (105.1 F) in 1961, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Suffield A by year
Year
Hottest day (TXx)
1950
35.6 C (96.1 F)
1951
37.2 C (99.0 F)
1952
35.6 C (96.1 F)
1953
37.8 C (100.0 F)
1954
36.7 C (98.1 F)
1955
35.6 C (96.1 F)
1956
35.0 C (95.0 F)
1957
35.6 C (96.1 F)
1958
35.0 C (95.0 F)
1959
35.6 C (96.1 F)
1960
38.3 C (100.9 F)
1961
40.6 C (105.1 F)
1962
33.9 C (93.0 F)
1963
35.6 C (96.1 F)
1964
36.7 C (98.1 F)
1965
34.4 C (93.9 F)
1966
33.9 C (93.0 F)
1967
36.1 C (97.0 F)
1968
35.6 C (96.1 F)
1969
36.7 C (98.1 F)
1970
36.1 C (97.0 F)
1971
37.8 C (100.0 F)
1972
34.4 C (93.9 F)
1973
37.2 C (99.0 F)
1974
36.1 C (97.0 F)
1975
36.1 C (97.0 F)
1976
35.0 C (95.0 F)
1977
33.6 C (92.5 F)
1978
34.4 C (93.9 F)
1979
35.7 C (96.3 F)
1980
33.9 C (93.0 F)
1981
35.0 C (95.0 F)
1982
33.1 C (91.6 F)
1983
37.7 C (99.9 F)
Coldest night (TNn)
The coldest night of the year at Suffield A, 1950 to 1983. The record is -45.6 C (-50.1 F) in 1968, marked on the chart; the median year is -36.4 C (-33.5 F).
Coldest night (TNn) at Suffield A by year
Year
Coldest night (TNn)
1950
-33.3 C (-27.9 F)
1951
-40.0 C (-40.0 F)
1952
-38.9 C (-38.0 F)
1953
-30.0 C (-22.0 F)
1954
-40.6 C (-41.1 F)
1955
-31.7 C (-25.1 F)
1956
-37.2 C (-35.0 F)
1957
-41.7 C (-43.1 F)
1958
-33.9 C (-29.0 F)
1959
-31.7 C (-25.1 F)
1960
-32.2 C (-26.0 F)
1961
-32.8 C (-27.0 F)
1962
-36.1 C (-33.0 F)
1963
-35.6 C (-32.1 F)
1964
-37.8 C (-36.0 F)
1965
-34.4 C (-29.9 F)
1966
-36.7 C (-34.1 F)
1967
-32.2 C (-26.0 F)
1968
-45.6 C (-50.1 F)
1969
-41.7 C (-43.1 F)
1970
-40.0 C (-40.0 F)
1971
-37.8 C (-36.0 F)
1972
-38.3 C (-36.9 F)
1973
-30.0 C (-22.0 F)
1974
-37.8 C (-36.0 F)
1975
-35.6 C (-32.1 F)
1976
-33.3 C (-27.9 F)
1977
-40.8 C (-41.4 F)
1978
-33.5 C (-28.3 F)
1979
-35.6 C (-32.1 F)
1980
-37.0 C (-34.6 F)
1981
-31.3 C (-24.3 F)
1982
-36.8 C (-34.2 F)
1983
-41.5 C (-42.7 F)
Wettest day (Rx1day)
The wettest day of the year at Suffield A, 1950 to 1983. The record is 80.5 mm (3.2 in) in 1973, marked on the chart; the median year is 33.9 mm (1.3 in).
Wettest day (Rx1day) at Suffield A by year
Year
Wettest day (Rx1day)
1950
54.6 mm (2.1 in)
1951
58.9 mm (2.3 in)
1952
36.3 mm (1.4 in)
1953
57.7 mm (2.3 in)
1954
46.2 mm (1.8 in)
1955
32.3 mm (1.3 in)
1956
23.1 mm (0.9 in)
1957
18.3 mm (0.7 in)
1958
33.3 mm (1.3 in)
1959
29.7 mm (1.2 in)
1960
27.9 mm (1.1 in)
1961
14.0 mm (0.6 in)
1962
21.1 mm (0.8 in)
1963
69.1 mm (2.7 in)
1964
38.4 mm (1.5 in)
1965
34.8 mm (1.4 in)
1966
39.4 mm (1.6 in)
1967
36.6 mm (1.4 in)
1968
40.9 mm (1.6 in)
1969
20.6 mm (0.8 in)
1970
66.0 mm (2.6 in)
1971
27.7 mm (1.1 in)
1972
15.0 mm (0.6 in)
1973
80.5 mm (3.2 in)
1974
27.2 mm (1.1 in)
1975
34.5 mm (1.4 in)
1976
38.9 mm (1.5 in)
1977
29.8 mm (1.2 in)
1978
50.5 mm (2.0 in)
1979
25.0 mm (1.0 in)
1980
38.6 mm (1.5 in)
1981
28.2 mm (1.1 in)
1982
23.9 mm (0.9 in)
1983
23.6 mm (0.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Suffield A, 1950 to 1983. The record is 133.1 mm (5.2 in) in 1970, marked on the chart; the median year is 46.5 mm (1.8 in).
Wettest five days (Rx5day) at Suffield A by year
Year
Wettest five days (Rx5day)
1950
57.2 mm (2.3 in)
1951
68.5 mm (2.7 in)
1952
38.9 mm (1.5 in)
1953
99.8 mm (3.9 in)
1954
89.6 mm (3.5 in)
1955
47.5 mm (1.9 in)
1956
35.5 mm (1.4 in)
1957
23.9 mm (0.9 in)
1958
44.7 mm (1.8 in)
1959
46.7 mm (1.8 in)
1960
41.1 mm (1.6 in)
1961
17.3 mm (0.7 in)
1962
26.2 mm (1.0 in)
1963
90.4 mm (3.6 in)
1964
58.3 mm (2.3 in)
1965
52.3 mm (2.1 in)
1966
45.5 mm (1.8 in)
1967
61.8 mm (2.4 in)
1968
55.2 mm (2.2 in)
1969
20.6 mm (0.8 in)
1970
133.1 mm (5.2 in)
1971
29.7 mm (1.2 in)
1972
30.0 mm (1.2 in)
1973
101.6 mm (4.0 in)
1974
37.4 mm (1.5 in)
1975
57.9 mm (2.3 in)
1976
40.7 mm (1.6 in)
1977
46.3 mm (1.8 in)
1978
63.2 mm (2.5 in)
1979
27.1 mm (1.1 in)
1980
53.9 mm (2.1 in)
1981
45.2 mm (1.8 in)
1982
48.0 mm (1.9 in)
1983
29.8 mm (1.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Suffield A, 1950 to 1983. The record is 63 days in 1963, marked on the chart; the median year is 35 days.
Longest dry spell (CDD) at Suffield A by year
Year
Longest dry spell (CDD)
1950
25 days
1951
36 days
1952
55 days
1953
43 days
1954
41 days
1955
46 days
1956
24 days
1957
30 days
1958
46 days
1959
25 days
1960
42 days
1961
26 days
1962
35 days
1963
63 days
1964
35 days
1965
44 days
1966
32 days
1967
30 days
1968
32 days
1969
31 days
1970
30 days
1971
44 days
1972
28 days
1973
43 days
1974
47 days
1975
19 days
1976
50 days
1977
36 days
1978
19 days
1979
35 days
1980
25 days
1981
39 days
1982
24 days
1983
26 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
33 years with a frost
Across 33 years with a frost, the median last spring frost at Suffield A falls on 17 May and the median first autumn frost on 17 September, which leaves a median of 120 days between them.
Fitted over all years, the growing season changes by +2.2 days per decade at this station.
Frost dates and growing season at Suffield A
Measure
Median, all years
Earliest period
Recent period (1954 to 1983)
Recent against earliest
Fitted trend
Last spring frost
17 May
n/a
17 May
n/a
-3.5 days per decade
First autumn frost
17 September
n/a
15 September
n/a
-1.2 days per decade
Growing days
120 days
n/a
120 days
n/a
+2.2 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
33 years, 1951 to 1983
A day with at least 32.4 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 94.2 mm (3.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Suffield A: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
32.4 mm (1.3 in)
5 years
46.4 mm (1.8 in)
10 years
56.6 mm (2.2 in)
25 years
70.7 mm (2.8 in)
50 years
82.1 mm (3.2 in)
Longer than the 33 years of record
100 years
94.2 mm (3.7 in)
Longer than the 33 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, 33 years of values from 1951 to 1983.
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: 80.5 mm (3.2 in) in 1973; 69.1 mm (2.7 in) in 1963; 66.0 mm (2.6 in) in 1970.
Download the Data
Data for Suffield A standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Suffield A 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.