Record envelope, standing records and threshold days for Nashua (USC00275702), New Hampshire, United States, with 57 years of record.
Key Facts for Nashua
Nashua (USC00275702) is a weather station in New Hampshire, United States at 42.77 latitude and -71.45 longitude, 27 m (87 ft) above sea level.
The station reports from 1938 to 1994, 57 years of record.
1,464 records set at Nashua still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Nashua tied a daily record high minimum temperature of -2.2 C (28.0 F) on 18 December 1994.
About the Station
Location: New Hampshire, United States, 42.77 latitude, -71.45 longitude.
Elevation: 27 m (87 ft).
Period of record: 1938 to 1994, 57 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Nashua. 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 Nashua, 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)
-33.9 C (-29.0 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-25.0 C (-13.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-13.3 C (8.1 F)
n/a
n/a
May
35.6 C (96.1 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
37.2 C (99.0 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
37.8 C (100.0 F)
2.8 C (37.0 F)
n/a
n/a
Aug
37.8 C (100.0 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
31.1 C (88.0 F)
-10.0 C (14.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-17.2 C (1.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Nashua still stand. 1956 holds the most, with 59.
Standing records at Nashua by the year they were set
Year set
Standing records
1950
51
1951
42
1952
27
1953
57
1954
38
1955
42
1956
59
1957
43
1958
31
1959
34
1960
28
1961
36
1962
32
1963
32
1964
42
1965
40
1966
33
1967
41
1968
33
1969
28
1970
31
1971
27
1972
32
1973
21
1974
24
1975
26
1976
47
1977
28
1978
18
1979
54
1980
19
1981
24
1982
31
1983
25
1984
26
1985
17
1986
23
1987
35
1988
30
1989
23
1990
25
1991
30
1992
24
1993
34
1994
21
All-Time Record Progression
1 new records
1 all-time records were set at Nashua between 11 August 1988 and 11 August 1988. Each dot is a new record.
When Nashua set new all-time records
Date
Kind
Detail
1988-08-11
Record high minimum temperature
Record high minimum temperature 24.4 C (75.9 F)
Wettest Day of Each Month
Sep: 137.9 mm (5.4 in)
The wettest day on record for each calendar month at Nashua. The most was 137.9 mm (5.4 in) on 12 September 1954.
Record daily precipitation for each month at Nashua
Month
Record daily precipitation (mm)
Date
Jan
55.6 mm (2.2 in)
8 January 1958
Feb
54.6 mm (2.1 in)
26 February 1981
Mar
66.5 mm (2.6 in)
17 March 1974
Apr
64.3 mm (2.5 in)
29 April 1988
May
53.8 mm (2.1 in)
16 May 1954
Jun
61.5 mm (2.4 in)
30 June 1973
Jul
82.6 mm (3.3 in)
13 July 1951
Aug
127.3 mm (5.0 in)
20 August 1991
Sep
137.9 mm (5.4 in)
12 September 1954
Oct
109.2 mm (4.3 in)
6 October 1962
Nov
94.0 mm (3.7 in)
26 November 1950
Dec
103.9 mm (4.1 in)
27 December 1969
Period of Record Coverage
1950 to 1994
Complete yearUnder 90 percent of days
45 years of record at Nashua, 1950 to 1994. 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 43 complete years at Nashua, 1950 to 1994. Blue stripes are years cooler than the station's own mean of 8.2 C (46.8 F); red stripes are warmer. The coolest year was 1962, at 7.1 C (44.8 F), and the warmest was 1990, at 9.8 C (49.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Nashua as warming stripes, 1950 to 1994
Year
Annual mean temperature
Difference from the station mean
1950
7.8 C
-0.38 C
1952
8.1 C
-0.11 C
1953
9.4 C
+1.16 C
1954
8.3 C
+0.12 C
1955
8.5 C
+0.27 C
1956
7.6 C
-0.65 C
1957
8.6 C
+0.38 C
1958
7.5 C
-0.71 C
1959
8.5 C
+0.30 C
1960
8.0 C
-0.20 C
1961
8.0 C
-0.23 C
1962
7.1 C
-1.09 C
1963
7.7 C
-0.47 C
1964
7.9 C
-0.34 C
1965
7.7 C
-0.48 C
1966
8.1 C
-0.15 C
1967
7.5 C
-0.73 C
1968
7.4 C
-0.86 C
1969
8.0 C
-0.19 C
1970
8.0 C
-0.22 C
1971
7.9 C
-0.28 C
1972
7.4 C
-0.86 C
1973
8.9 C
+0.69 C
1974
8.1 C
-0.15 C
1975
8.5 C
+0.27 C
1976
7.6 C
-0.59 C
1977
8.0 C
-0.18 C
1979
8.8 C
+0.58 C
1980
7.7 C
-0.51 C
1981
8.4 C
+0.16 C
1982
7.7 C
-0.56 C
1983
8.9 C
+0.70 C
1984
9.0 C
+0.82 C
1985
8.5 C
+0.27 C
1986
8.5 C
+0.27 C
1987
8.7 C
+0.45 C
1988
8.6 C
+0.42 C
1989
8.2 C
-0.01 C
1990
9.8 C
+1.55 C
1991
9.6 C
+1.43 C
1992
8.1 C
-0.10 C
1993
8.3 C
+0.07 C
1994
8.3 C
+0.04 C
The annual mean temperature here has risen by 0.16 C (0.03 to 0.30) per decade over 1950 to 1994. In Fahrenheit: 0.29 F (0.05 to 0.53) 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 Nashua
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.16 C (0.03 to 0.30) per decade
0.29 F (0.05 to 0.53) per decade
1950 to 1994
43
Rise
Mean daily maximum
-0.1 C (-0.2 to 0.1) per decade
-0.2 F (-0.4 to 0.1) per decade
1950 to 1994
43
Not clearly different from zero
Mean daily minimum
0.4 C (0.3 to 0.6) per decade
0.7 F (0.5 to 1.0) per decade
1950 to 1994
43
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
1938 to 1994
Yearly extremes at Nashua: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1952
35.0 C (95.0 F)
45
Coldest night (TNn)
-33.9 C (-29.0 F)
1957
-25.0 C (-13.0 F)
45
Wettest day (Rx1day)
137.9 mm (5.4 in)
1954
55.9 mm (2.2 in)
46
Wettest five days (Rx5day)
212.0 mm (8.3 in)
1962
90.3 mm (3.6 in)
46
Longest dry spell (CDD)
27 days
1987
16 days
46
Hottest day (TXx)
The hottest day of the year at Nashua, 1938 to 1994. The record is 37.8 C (100.0 F) in 1952, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Nashua by year
Year
Hottest day (TXx)
1938
n/a
1950
33.3 C (91.9 F)
1951
32.2 C (90.0 F)
1952
37.8 C (100.0 F)
1953
37.2 C (99.0 F)
1954
34.4 C (93.9 F)
1955
37.8 C (100.0 F)
1956
35.0 C (95.0 F)
1957
35.0 C (95.0 F)
1958
33.9 C (93.0 F)
1959
35.0 C (95.0 F)
1960
34.4 C (93.9 F)
1961
32.8 C (91.0 F)
1962
35.6 C (96.1 F)
1963
37.2 C (99.0 F)
1964
36.7 C (98.1 F)
1965
36.1 C (97.0 F)
1966
37.2 C (99.0 F)
1967
35.0 C (95.0 F)
1968
37.2 C (99.0 F)
1969
35.0 C (95.0 F)
1970
35.6 C (96.1 F)
1971
33.9 C (93.0 F)
1972
32.2 C (90.0 F)
1973
35.0 C (95.0 F)
1974
33.3 C (91.9 F)
1975
37.8 C (100.0 F)
1976
34.4 C (93.9 F)
1977
36.7 C (98.1 F)
1978
34.4 C (93.9 F)
1979
34.4 C (93.9 F)
1980
33.9 C (93.0 F)
1981
35.0 C (95.0 F)
1982
32.2 C (90.0 F)
1983
35.0 C (95.0 F)
1984
34.4 C (93.9 F)
1985
33.3 C (91.9 F)
1986
33.9 C (93.0 F)
1987
35.0 C (95.0 F)
1988
35.6 C (96.1 F)
1989
33.9 C (93.0 F)
1990
33.3 C (91.9 F)
1991
35.6 C (96.1 F)
1992
33.9 C (93.0 F)
1993
36.1 C (97.0 F)
1994
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Nashua, 1938 to 1994. The record is -33.9 C (-29.0 F) in 1957, marked on the chart; the median year is -25.0 C (-13.0 F).
Coldest night (TNn) at Nashua by year
Year
Coldest night (TNn)
1938
n/a
1950
-25.0 C (-13.0 F)
1951
-22.2 C (-8.0 F)
1952
-25.0 C (-13.0 F)
1953
-17.8 C (0.0 F)
1954
-30.0 C (-22.0 F)
1955
-26.1 C (-15.0 F)
1956
-23.3 C (-9.9 F)
1957
-33.9 C (-29.0 F)
1958
-31.7 C (-25.1 F)
1959
-22.8 C (-9.0 F)
1960
-23.9 C (-11.0 F)
1961
-33.3 C (-27.9 F)
1962
-30.6 C (-23.1 F)
1963
-30.0 C (-22.0 F)
1964
-28.3 C (-18.9 F)
1965
-24.4 C (-11.9 F)
1966
-23.9 C (-11.0 F)
1967
-28.3 C (-18.9 F)
1968
-25.6 C (-14.1 F)
1969
-26.1 C (-15.0 F)
1970
-28.3 C (-18.9 F)
1971
-31.1 C (-24.0 F)
1972
-27.8 C (-18.0 F)
1973
-24.4 C (-11.9 F)
1974
-26.1 C (-15.0 F)
1975
-26.7 C (-16.1 F)
1976
-28.9 C (-20.0 F)
1977
-23.3 C (-9.9 F)
1978
-23.9 C (-11.0 F)
1979
-22.8 C (-9.0 F)
1980
-26.1 C (-15.0 F)
1981
-27.8 C (-18.0 F)
1982
-25.0 C (-13.0 F)
1983
-22.8 C (-9.0 F)
1984
-31.1 C (-24.0 F)
1985
-22.8 C (-9.0 F)
1986
-20.0 C (-4.0 F)
1987
-22.2 C (-8.0 F)
1988
-26.1 C (-15.0 F)
1989
-24.4 C (-11.9 F)
1990
-20.0 C (-4.0 F)
1991
-20.6 C (-5.1 F)
1992
-18.9 C (-2.0 F)
1993
-24.4 C (-11.9 F)
1994
-28.9 C (-20.0 F)
Wettest day (Rx1day)
The wettest day of the year at Nashua, 1938 to 1994. The record is 137.9 mm (5.4 in) in 1954, marked on the chart; the median year is 55.9 mm (2.2 in).
Wettest day (Rx1day) at Nashua by year
Year
Wettest day (Rx1day)
1938
62.2 mm (2.4 in)
1950
94.0 mm (3.7 in)
1951
82.6 mm (3.3 in)
1952
76.2 mm (3.0 in)
1953
49.0 mm (1.9 in)
1954
137.9 mm (5.4 in)
1955
55.9 mm (2.2 in)
1956
45.0 mm (1.8 in)
1957
45.5 mm (1.8 in)
1958
55.6 mm (2.2 in)
1959
50.0 mm (2.0 in)
1960
91.9 mm (3.6 in)
1961
64.3 mm (2.5 in)
1962
109.2 mm (4.3 in)
1963
63.8 mm (2.5 in)
1964
41.7 mm (1.6 in)
1965
40.4 mm (1.6 in)
1966
55.6 mm (2.2 in)
1967
42.9 mm (1.7 in)
1968
48.3 mm (1.9 in)
1969
103.9 mm (4.1 in)
1970
53.6 mm (2.1 in)
1971
45.2 mm (1.8 in)
1972
61.5 mm (2.4 in)
1973
61.5 mm (2.4 in)
1974
66.5 mm (2.6 in)
1975
66.8 mm (2.6 in)
1976
69.3 mm (2.7 in)
1977
64.3 mm (2.5 in)
1978
54.1 mm (2.1 in)
1979
51.1 mm (2.0 in)
1980
53.8 mm (2.1 in)
1981
54.6 mm (2.1 in)
1982
46.2 mm (1.8 in)
1983
55.9 mm (2.2 in)
1984
46.0 mm (1.8 in)
1985
78.2 mm (3.1 in)
1986
62.2 mm (2.4 in)
1987
56.1 mm (2.2 in)
1988
69.9 mm (2.8 in)
1989
51.8 mm (2.0 in)
1990
92.7 mm (3.6 in)
1991
127.3 mm (5.0 in)
1992
38.1 mm (1.5 in)
1993
51.8 mm (2.0 in)
1994
42.2 mm (1.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Nashua, 1938 to 1994. The record is 212.0 mm (8.3 in) in 1962, marked on the chart; the median year is 90.3 mm (3.6 in).
Wettest five days (Rx5day) at Nashua by year
Year
Wettest five days (Rx5day)
1938
139.4 mm (5.5 in)
1950
104.7 mm (4.1 in)
1951
107.5 mm (4.2 in)
1952
132.1 mm (5.2 in)
1953
96.0 mm (3.8 in)
1954
156.7 mm (6.2 in)
1955
122.1 mm (4.8 in)
1956
142.6 mm (5.6 in)
1957
77.0 mm (3.0 in)
1958
60.8 mm (2.4 in)
1959
70.4 mm (2.8 in)
1960
128.5 mm (5.1 in)
1961
88.9 mm (3.5 in)
1962
212.0 mm (8.3 in)
1963
115.8 mm (4.6 in)
1964
61.3 mm (2.4 in)
1965
45.7 mm (1.8 in)
1966
68.6 mm (2.7 in)
1967
55.6 mm (2.2 in)
1968
68.8 mm (2.7 in)
1969
134.8 mm (5.3 in)
1970
73.2 mm (2.9 in)
1971
67.7 mm (2.7 in)
1972
62.5 mm (2.5 in)
1973
98.0 mm (3.9 in)
1974
51.9 mm (2.0 in)
1975
112.0 mm (4.4 in)
1976
82.6 mm (3.3 in)
1977
91.0 mm (3.6 in)
1978
64.4 mm (2.5 in)
1979
109.7 mm (4.3 in)
1980
75.4 mm (3.0 in)
1981
123.1 mm (4.8 in)
1982
136.1 mm (5.4 in)
1983
85.3 mm (3.4 in)
1984
149.6 mm (5.9 in)
1985
89.5 mm (3.5 in)
1986
84.7 mm (3.3 in)
1987
130.8 mm (5.1 in)
1988
84.6 mm (3.3 in)
1989
88.1 mm (3.5 in)
1990
134.4 mm (5.3 in)
1991
160.9 mm (6.3 in)
1992
66.0 mm (2.6 in)
1993
69.8 mm (2.7 in)
1994
94.8 mm (3.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Nashua, 1938 to 1994. The record is 27 days in 1987, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Nashua by year
Year
Longest dry spell (CDD)
1938
7 days
1950
24 days
1951
15 days
1952
21 days
1953
14 days
1954
19 days
1955
26 days
1956
14 days
1957
19 days
1958
15 days
1959
13 days
1960
12 days
1961
17 days
1962
13 days
1963
23 days
1964
18 days
1965
15 days
1966
14 days
1967
14 days
1968
21 days
1969
16 days
1970
17 days
1971
16 days
1972
13 days
1973
15 days
1974
15 days
1975
25 days
1976
20 days
1977
16 days
1978
23 days
1979
13 days
1980
13 days
1981
12 days
1982
17 days
1983
19 days
1984
18 days
1985
18 days
1986
14 days
1987
27 days
1988
16 days
1989
13 days
1990
14 days
1991
16 days
1992
12 days
1993
15 days
1994
11 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 Nashua falls on 15 May and the median first autumn frost on 28 September, which leaves a median of 135 days between them.
Fitted over all years, the growing season changes by +10.7 days per decade at this station.
Frost dates and growing season at Nashua
Measure
Median, all years
Earliest period
Recent period (1964 to 1994)
Recent against earliest
Fitted trend
Last spring frost
15 May
n/a
10 May
n/a
-6.3 days per decade
First autumn frost
28 September
n/a
2 October
n/a
+4.4 days per decade
Growing days
135 days
n/a
144 days
n/a
+10.7 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
44 years, 1950 to 1994
A day with at least 56.7 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 162.9 mm (6.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Nashua: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
56.7 mm (2.2 in)
5 years
74.5 mm (2.9 in)
10 years
89.6 mm (3.5 in)
25 years
113.7 mm (4.5 in)
50 years
136.0 mm (5.4 in)
Longer than the 44 years of record
100 years
162.9 mm (6.4 in)
Longer than the 44 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, 44 years of values from 1950 to 1994.
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: 137.9 mm (5.4 in) in 1954; 127.3 mm (5.0 in) in 1991; 109.2 mm (4.3 in) in 1962.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Nashua standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Nashua 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.