Record envelope, standing records and threshold days for Lewiston (USC00304715), New York, United States, with 92 years of record.
Key Facts for Lewiston
Lewiston (USC00304715) is a weather station in New York, United States at 43.18 latitude and -79.04 longitude, 108 m (355 ft) above sea level.
The station reports from 1935 to 2026, 92 years of record.
1,464 records set at Lewiston still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Lewiston set an all-time record daily precipitation of 97.5 mm (3.8 in) on 28 July 2026.
About the Station
Location: New York, United States, 43.18 latitude, -79.04 longitude.
Elevation: 108 m (355 ft).
Period of record: 1935 to 2026, 92 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 Lewiston. 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 Lewiston, 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)
-22.8 C (-9.0 F)
n/a
n/a
Feb
18.3 C (64.9 F)
-23.9 C (-11.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-20.6 C (-5.1 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-11.7 C (10.9 F)
n/a
n/a
May
33.9 C (93.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jun
35.0 C (95.0 F)
0.6 C (33.1 F)
n/a
n/a
Jul
41.1 C (106.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
38.3 C (100.9 F)
5.0 C (41.0 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-0.6 C (30.9 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-6.7 C (19.9 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
18.3 C (64.9 F)
-22.2 C (-8.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Lewiston still stand. 1936 holds the most, with 73.
Standing records at Lewiston by the year they were set
Year set
Standing records
1935
34
1936
73
1937
43
1938
52
1939
31
1940
52
1941
49
1942
40
1943
45
1944
32
1945
65
1946
50
1947
45
1948
40
1949
44
1950
46
1951
42
1952
31
1953
34
1954
36
1955
45
1956
36
1957
37
1958
28
1959
46
1960
28
1961
29
1962
35
1963
35
1964
35
1965
36
1966
35
1967
30
1968
27
1969
26
1970
22
1971
21
1972
29
All-Time Record Progression
2 new records
2 all-time records were set at Lewiston between 21 July 1972 and 28 July 2026. Each dot is a new record.
When Lewiston set new all-time records
Date
Kind
Detail
1972-07-21
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
2026-07-28
Record daily precipitation
Record daily precipitation 97.5 mm (3.8 in)
Wettest Day of Each Month
Jul: 97.5 mm (3.8 in)
The wettest day on record for each calendar month at Lewiston. The most was 97.5 mm (3.8 in) on 28 July 2026.
Record daily precipitation for each month at Lewiston
Month
Record daily precipitation (mm)
Date
Jan
53.3 mm (2.1 in)
23 January 1966
Feb
49.5 mm (1.9 in)
16 February 1954
Mar
48.3 mm (1.9 in)
31 March 1945
Apr
54.6 mm (2.1 in)
3 April 2025
May
44.2 mm (1.7 in)
24 May 2026
Jun
79.2 mm (3.1 in)
19 June 2024
Jul
97.5 mm (3.8 in)
28 July 2026
Aug
71.1 mm (2.8 in)
10 August 1953
Sep
89.9 mm (3.5 in)
18 September 1945
Oct
50.8 mm (2.0 in)
1 October 1945
Nov
47.5 mm (1.9 in)
10 November 1962
Dec
43.7 mm (1.7 in)
28 December 1968
Period of Record Coverage
1935 to 1972
Complete yearUnder 90 percent of days
38 years of record at Lewiston, 1935 to 1972. 1 years have data for under 90 percent of days and are left out of rankings: 1935.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Lewiston, 1936 to 1971. Blue stripes are years cooler than the station's own mean of 9.6 C (49.3 F); red stripes are warmer. The coolest year was 1940, at 8.3 C (46.9 F), and the warmest was 1953, at 10.9 C (51.7 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Lewiston as warming stripes, 1936 to 1971
Year
Annual mean temperature
Difference from the station mean
1936
9.0 C
-0.58 C
1937
9.5 C
-0.08 C
1938
9.9 C
+0.29 C
1939
9.5 C
-0.11 C
1940
8.3 C
-1.31 C
1941
10.2 C
+0.60 C
1942
9.5 C
-0.12 C
1943
8.5 C
-1.08 C
1944
9.5 C
-0.09 C
1945
9.3 C
-0.36 C
1946
10.3 C
+0.64 C
1947
9.7 C
+0.04 C
1948
9.7 C
+0.07 C
1949
10.8 C
+1.20 C
1950
9.1 C
-0.50 C
1951
9.5 C
-0.08 C
1952
10.4 C
+0.79 C
1953
10.9 C
+1.32 C
1954
9.8 C
+0.21 C
1955
10.6 C
+0.96 C
1956
9.3 C
-0.33 C
1957
10.0 C
+0.38 C
1958
9.1 C
-0.52 C
1959
10.0 C
+0.43 C
1960
8.9 C
-0.70 C
1961
9.7 C
+0.10 C
1962
9.5 C
-0.14 C
1963
9.2 C
-0.38 C
1964
10.0 C
+0.37 C
1965
9.1 C
-0.48 C
1966
9.6 C
-0.02 C
1967
9.4 C
-0.26 C
1968
9.5 C
-0.11 C
1969
9.5 C
-0.14 C
1970
9.6 C
+0.01 C
1971
9.5 C
-0.07 C
The fitted trend in annual mean temperature here over 1936 to 1971 is 0.02 C (-0.17 to 0.21) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.04 F (-0.30 to 0.37) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Lewiston
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.17 to 0.21) per decade
0.04 F (-0.30 to 0.37) per decade
1936 to 1971
36
Not clearly different from zero
Mean daily maximum
-0.19 C (-0.41 to 0.03) per decade
-0.35 F (-0.74 to 0.05) per decade
1936 to 1971
36
Not clearly different from zero
Mean daily minimum
0.2 C (0.1 to 0.4) per decade
0.4 F (0.1 to 0.7) per decade
1936 to 1971
36
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
1935 to 2026
Yearly extremes at Lewiston: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.1 C (106.0 F)
1936
34.7 C (94.5 F)
38
Coldest night (TNn)
-23.9 C (-11.0 F)
1943
-18.6 C (-1.5 F)
38
Wettest day (Rx1day)
97.5 mm (3.8 in)
2026
46.2 mm (1.8 in)
41
Wettest five days (Rx5day)
144.8 mm (5.7 in)
1945
65.9 mm (2.6 in)
41
Longest dry spell (CDD)
30 days
1969
16 days
41
Hottest day (TXx)
The hottest day of the year at Lewiston, 1935 to 2026. The record is 41.1 C (106.0 F) in 1936, marked on the chart; the median year is 34.7 C (94.5 F).
Hottest day (TXx) at Lewiston by year
Year
Hottest day (TXx)
1935
36.1 C (97.0 F)
1936
41.1 C (106.0 F)
1937
36.1 C (97.0 F)
1938
34.4 C (93.9 F)
1939
35.6 C (96.1 F)
1940
33.9 C (93.0 F)
1941
37.2 C (99.0 F)
1942
34.4 C (93.9 F)
1943
35.0 C (95.0 F)
1944
35.6 C (96.1 F)
1945
34.4 C (93.9 F)
1946
35.0 C (95.0 F)
1947
37.2 C (99.0 F)
1948
38.3 C (100.9 F)
1949
37.8 C (100.0 F)
1950
32.8 C (91.0 F)
1951
33.3 C (91.9 F)
1952
35.6 C (96.1 F)
1953
37.2 C (99.0 F)
1954
33.9 C (93.0 F)
1955
37.8 C (100.0 F)
1956
34.4 C (93.9 F)
1957
35.0 C (95.0 F)
1958
33.3 C (91.9 F)
1959
36.1 C (97.0 F)
1960
32.8 C (91.0 F)
1961
32.2 C (90.0 F)
1962
33.9 C (93.0 F)
1963
35.0 C (95.0 F)
1964
34.4 C (93.9 F)
1965
32.2 C (90.0 F)
1966
35.6 C (96.1 F)
1967
31.1 C (88.0 F)
1968
32.8 C (91.0 F)
1969
32.2 C (90.0 F)
1970
30.6 C (87.1 F)
1971
32.2 C (90.0 F)
1972
35.6 C (96.1 F)
2024
n/a
2025
n/a
2026
n/a
Coldest night (TNn)
The coldest night of the year at Lewiston, 1935 to 2026. The record is -23.9 C (-11.0 F) in 1943, marked on the chart; the median year is -18.6 C (-1.5 F).
Coldest night (TNn) at Lewiston by year
Year
Coldest night (TNn)
1935
-17.8 C (0.0 F)
1936
-22.8 C (-9.0 F)
1937
-12.8 C (9.0 F)
1938
-20.6 C (-5.1 F)
1939
-18.9 C (-2.0 F)
1940
-16.7 C (1.9 F)
1941
-16.7 C (1.9 F)
1942
-21.1 C (-6.0 F)
1943
-23.9 C (-11.0 F)
1944
-18.9 C (-2.0 F)
1945
-22.2 C (-8.0 F)
1946
-17.8 C (0.0 F)
1947
-15.6 C (3.9 F)
1948
-19.4 C (-2.9 F)
1949
-14.4 C (6.1 F)
1950
-20.0 C (-4.0 F)
1951
-17.8 C (0.0 F)
1952
-16.7 C (1.9 F)
1953
-12.8 C (9.0 F)
1954
-17.8 C (0.0 F)
1955
-17.2 C (1.0 F)
1956
-15.0 C (5.0 F)
1957
-22.8 C (-9.0 F)
1958
-18.9 C (-2.0 F)
1959
-17.8 C (0.0 F)
1960
-20.0 C (-4.0 F)
1961
-20.0 C (-4.0 F)
1962
-20.6 C (-5.1 F)
1963
-22.2 C (-8.0 F)
1964
-16.1 C (3.0 F)
1965
-17.8 C (0.0 F)
1966
-19.4 C (-2.9 F)
1967
-17.2 C (1.0 F)
1968
-18.9 C (-2.0 F)
1969
-17.2 C (1.0 F)
1970
-18.3 C (-0.9 F)
1971
-19.4 C (-2.9 F)
1972
-18.9 C (-2.0 F)
2024
n/a
2025
n/a
2026
n/a
Wettest day (Rx1day)
The wettest day of the year at Lewiston, 1935 to 2026. The record is 97.5 mm (3.8 in) in 2026, marked on the chart; the median year is 46.2 mm (1.8 in).
Wettest day (Rx1day) at Lewiston by year
Year
Wettest day (Rx1day)
1935
24.1 mm (0.9 in)
1936
41.4 mm (1.6 in)
1937
43.9 mm (1.7 in)
1938
45.2 mm (1.8 in)
1939
29.2 mm (1.1 in)
1940
44.7 mm (1.8 in)
1941
30.5 mm (1.2 in)
1942
50.5 mm (2.0 in)
1943
46.2 mm (1.8 in)
1944
30.5 mm (1.2 in)
1945
89.9 mm (3.5 in)
1946
46.2 mm (1.8 in)
1947
54.9 mm (2.2 in)
1948
51.3 mm (2.0 in)
1949
33.5 mm (1.3 in)
1950
54.6 mm (2.1 in)
1951
44.7 mm (1.8 in)
1952
43.7 mm (1.7 in)
1953
71.1 mm (2.8 in)
1954
55.1 mm (2.2 in)
1955
38.9 mm (1.5 in)
1956
49.5 mm (1.9 in)
1957
43.4 mm (1.7 in)
1958
36.3 mm (1.4 in)
1959
33.5 mm (1.3 in)
1960
25.9 mm (1.0 in)
1961
49.0 mm (1.9 in)
1962
59.2 mm (2.3 in)
1963
46.5 mm (1.8 in)
1964
72.4 mm (2.9 in)
1965
46.2 mm (1.8 in)
1966
53.3 mm (2.1 in)
1967
46.2 mm (1.8 in)
1968
71.6 mm (2.8 in)
1969
29.2 mm (1.1 in)
1970
36.1 mm (1.4 in)
1971
39.6 mm (1.6 in)
1972
39.6 mm (1.6 in)
2024
79.2 mm (3.1 in)
2025
54.6 mm (2.1 in)
2026
97.5 mm (3.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lewiston, 1935 to 2026. The record is 144.8 mm (5.7 in) in 1945, marked on the chart; the median year is 65.9 mm (2.6 in).
Wettest five days (Rx5day) at Lewiston by year
Year
Wettest five days (Rx5day)
1935
37.9 mm (1.5 in)
1936
97.5 mm (3.8 in)
1937
51.4 mm (2.0 in)
1938
65.3 mm (2.6 in)
1939
41.4 mm (1.6 in)
1940
65.9 mm (2.6 in)
1941
50.1 mm (2.0 in)
1942
78.3 mm (3.1 in)
1943
78.3 mm (3.1 in)
1944
69.4 mm (2.7 in)
1945
144.8 mm (5.7 in)
1946
48.0 mm (1.9 in)
1947
75.5 mm (3.0 in)
1948
86.1 mm (3.4 in)
1949
51.1 mm (2.0 in)
1950
113.2 mm (4.5 in)
1951
65.6 mm (2.6 in)
1952
57.0 mm (2.2 in)
1953
75.2 mm (3.0 in)
1954
87.1 mm (3.4 in)
1955
71.4 mm (2.8 in)
1956
77.4 mm (3.0 in)
1957
53.4 mm (2.1 in)
1958
53.0 mm (2.1 in)
1959
56.1 mm (2.2 in)
1960
56.4 mm (2.2 in)
1961
76.9 mm (3.0 in)
1962
74.5 mm (2.9 in)
1963
64.0 mm (2.5 in)
1964
101.4 mm (4.0 in)
1965
49.2 mm (1.9 in)
1966
55.1 mm (2.2 in)
1967
75.6 mm (3.0 in)
1968
80.8 mm (3.2 in)
1969
63.7 mm (2.5 in)
1970
42.5 mm (1.7 in)
1971
66.3 mm (2.6 in)
1972
58.9 mm (2.3 in)
2024
89.1 mm (3.5 in)
2025
41.1 mm (1.6 in)
2026
97.5 mm (3.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Lewiston, 1935 to 2026. The record is 30 days in 1969, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Lewiston by year
Year
Longest dry spell (CDD)
1935
15 days
1936
24 days
1937
14 days
1938
14 days
1939
20 days
1940
14 days
1941
19 days
1942
15 days
1943
20 days
1944
14 days
1945
16 days
1946
14 days
1947
17 days
1948
20 days
1949
18 days
1950
14 days
1951
11 days
1952
18 days
1953
14 days
1954
13 days
1955
23 days
1956
15 days
1957
23 days
1958
19 days
1959
12 days
1960
16 days
1961
22 days
1962
18 days
1963
28 days
1964
16 days
1965
17 days
1966
13 days
1967
16 days
1968
25 days
1969
30 days
1970
14 days
1971
24 days
1972
12 days
2024
17 days
2025
13 days
2026
10 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Lewiston falls on 3 May and the median first autumn frost on 17 October, which leaves a median of 164 days between them.
Fitted over all years, the growing season changes by +9.7 days per decade at this station.
Frost dates and growing season at Lewiston
Measure
Median, all years
Earliest period
Recent period (1942 to 1971)
Recent against earliest
Fitted trend
Last spring frost
3 May
n/a
2 May
n/a
-3.4 days per decade
First autumn frost
17 October
n/a
18 October
n/a
+6.3 days per decade
Growing days
164 days
n/a
166 days
n/a
+9.7 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
38 years, 1936 to 2024
A day with at least 44.8 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 95.0 mm (3.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Lewiston: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
44.8 mm (1.8 in)
5 years
57.4 mm (2.3 in)
10 years
66.1 mm (2.6 in)
25 years
77.5 mm (3.1 in)
50 years
86.2 mm (3.4 in)
Longer than the 38 years of record
100 years
95.0 mm (3.7 in)
Longer than the 38 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, 38 years of values from 1936 to 2024.
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: 89.9 mm (3.5 in) in 1945; 79.2 mm (3.1 in) in 2024; 72.4 mm (2.9 in) in 1964.
Download the Data
Data for Lewiston standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lewiston 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.