Record envelope, standing records and threshold days for Jeffersonville (USC00304234), New York, United States, with 45 years of record.
Key Facts for Jeffersonville
Jeffersonville (USC00304234) is a weather station in New York, United States at 41.78 latitude and -74.93 longitude, 329 m (1,080 ft) above sea level.
The station reports from 1903 to 1947, 45 years of record.
1,464 records set at Jeffersonville still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Jeffersonville set a daily record precipitation of 43.2 mm (1.7 in) on 17 July 1947.
About the Station
Location: New York, United States, 41.78 latitude, -74.93 longitude.
Elevation: 329 m (1,080 ft).
Period of record: 1903 to 1947, 45 years.
Eligible elements: tmax, tmin, prcp.
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 Jeffersonville. 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 Jeffersonville, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
20.6 C (69.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Feb
18.9 C (66.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-14.4 C (6.1 F)
n/a
n/a
May
35.6 C (96.1 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
36.7 C (98.1 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
37.2 C (99.0 F)
1.7 C (35.1 F)
n/a
n/a
Aug
37.2 C (99.0 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
33.3 C (91.9 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
32.2 C (90.0 F)
-13.9 C (7.0 F)
n/a
n/a
Nov
25.6 C (78.1 F)
-21.7 C (-7.1 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Jeffersonville still stand. 1918 holds the most, with 58.
Standing records at Jeffersonville by the year they were set
Year set
Standing records
1903
25
1904
31
1905
42
1906
46
1907
36
1908
43
1909
34
1910
35
1911
39
1912
32
1913
47
1914
55
1915
23
1916
35
1917
38
1918
58
1919
40
1920
33
1921
43
1922
21
1923
26
1924
23
1925
32
1926
32
1927
30
1928
25
1929
44
1930
50
1931
27
1932
21
1933
32
1934
22
1935
35
1936
39
1937
21
1938
26
1939
22
1940
36
1941
20
1942
31
1943
33
1944
14
1945
35
1946
17
1947
15
Wettest Day of Each Month
Oct: 113.0 mm (4.4 in)
The wettest day on record for each calendar month at Jeffersonville. The most was 113.0 mm (4.4 in) on 9 October 1903.
Record daily precipitation for each month at Jeffersonville
Month
Record daily precipitation (mm)
Date
Jan
40.6 mm (1.6 in)
8 January 1913
Feb
49.3 mm (1.9 in)
22 February 1937
Mar
47.5 mm (1.9 in)
27 March 1913
Apr
51.6 mm (2.0 in)
5 April 1947
May
69.9 mm (2.8 in)
28 May 1929
Jun
52.3 mm (2.1 in)
15 June 1919
Jul
99.1 mm (3.9 in)
28 July 1904
Aug
81.3 mm (3.2 in)
26 August 1928
Sep
96.5 mm (3.8 in)
30 September 1924
Oct
113.0 mm (4.4 in)
9 October 1903
Nov
77.2 mm (3.0 in)
9 November 1913
Dec
52.1 mm (2.1 in)
18 December 1915
Period of Record Coverage
1903 to 1947
Complete yearUnder 90 percent of days
45 years of record at Jeffersonville, 1903 to 1947. 2 years have data for under 90 percent of days and are left out of rankings: 1903, 1947.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Jeffersonville, 1904 to 1946. Blue stripes are years cooler than the station's own mean of 7.6 C (45.7 F); red stripes are warmer. The coolest year was 1904, at 6.1 C (43.0 F), and the warmest was 1921, at 9.3 C (48.7 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Jeffersonville as warming stripes, 1904 to 1946
Year
Annual mean temperature
Difference from the station mean
1904
6.1 C
-1.49 C
1905
7.2 C
-0.40 C
1906
7.9 C
+0.26 C
1907
6.5 C
-1.07 C
1908
7.8 C
+0.24 C
1909
7.8 C
+0.17 C
1910
7.8 C
+0.18 C
1911
8.2 C
+0.62 C
1912
7.4 C
-0.23 C
1913
9.1 C
+1.46 C
1914
7.1 C
-0.48 C
1915
8.1 C
+0.52 C
1916
7.3 C
-0.29 C
1917
6.4 C
-1.17 C
1918
7.9 C
+0.26 C
1919
8.6 C
+1.02 C
1920
7.3 C
-0.34 C
1921
9.3 C
+1.69 C
1922
8.3 C
+0.68 C
1923
7.4 C
-0.15 C
1924
6.6 C
-0.95 C
1925
7.6 C
+0.03 C
1926
6.1 C
-1.47 C
1927
7.5 C
-0.07 C
1928
7.7 C
+0.13 C
1929
7.6 C
+0.05 C
1930
8.0 C
+0.36 C
1931
8.7 C
+1.11 C
1932
8.0 C
+0.45 C
1933
8.0 C
+0.45 C
1934
7.3 C
-0.28 C
1935
7.1 C
-0.50 C
1936
7.4 C
-0.18 C
1937
7.8 C
+0.18 C
1938
8.3 C
+0.68 C
1939
7.7 C
+0.15 C
1940
6.3 C
-1.33 C
1941
7.8 C
+0.20 C
1942
7.6 C
-0.02 C
1943
6.8 C
-0.78 C
1944
7.3 C
-0.34 C
1945
7.6 C
+0.04 C
1946
8.2 C
+0.58 C
The fitted trend in annual mean temperature here over 1904 to 1946 is 0.02 C (-0.16 to 0.20) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.03 F (-0.29 to 0.36) 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 Jeffersonville
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.02 C (-0.16 to 0.20) per decade
0.03 F (-0.29 to 0.36) per decade
1904 to 1946
43
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.6) per decade
1904 to 1946
43
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.5 to 0.1) per decade
1904 to 1946
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
1903 to 1947
Yearly extremes at Jeffersonville: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.2 C (99.0 F)
1911
33.3 C (91.9 F)
45
Coldest night (TNn)
-34.4 C (-29.9 F)
1904
-27.8 C (-18.0 F)
45
Wettest day (Rx1day)
113.0 mm (4.4 in)
1903
58.4 mm (2.3 in)
45
Wettest five days (Rx5day)
229.8 mm (9.0 in)
1903
93.7 mm (3.7 in)
45
Longest dry spell (CDD)
35 days
1924
18 days
45
Hottest day (TXx)
The hottest day of the year at Jeffersonville, 1903 to 1947. The record is 37.2 C (99.0 F) in 1911, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Jeffersonville by year
Year
Hottest day (TXx)
1903
33.3 C (91.9 F)
1904
32.8 C (91.0 F)
1905
33.3 C (91.9 F)
1906
33.3 C (91.9 F)
1907
35.0 C (95.0 F)
1908
34.4 C (93.9 F)
1909
35.0 C (95.0 F)
1910
32.8 C (91.0 F)
1911
37.2 C (99.0 F)
1912
35.0 C (95.0 F)
1913
36.1 C (97.0 F)
1914
33.3 C (91.9 F)
1915
32.8 C (91.0 F)
1916
33.9 C (93.0 F)
1917
34.4 C (93.9 F)
1918
37.2 C (99.0 F)
1919
36.7 C (98.1 F)
1920
31.7 C (89.1 F)
1921
35.0 C (95.0 F)
1922
33.3 C (91.9 F)
1923
33.3 C (91.9 F)
1924
32.8 C (91.0 F)
1925
33.9 C (93.0 F)
1926
34.4 C (93.9 F)
1927
32.2 C (90.0 F)
1928
32.2 C (90.0 F)
1929
32.8 C (91.0 F)
1930
35.6 C (96.1 F)
1931
33.9 C (93.0 F)
1932
33.3 C (91.9 F)
1933
35.0 C (95.0 F)
1934
32.8 C (91.0 F)
1935
32.2 C (90.0 F)
1936
37.2 C (99.0 F)
1937
32.8 C (91.0 F)
1938
32.2 C (90.0 F)
1939
34.4 C (93.9 F)
1940
31.7 C (89.1 F)
1941
32.2 C (90.0 F)
1942
31.7 C (89.1 F)
1943
32.8 C (91.0 F)
1944
33.9 C (93.0 F)
1945
32.8 C (91.0 F)
1946
32.8 C (91.0 F)
1947
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Jeffersonville, 1903 to 1947. The record is -34.4 C (-29.9 F) in 1904, marked on the chart; the median year is -27.8 C (-18.0 F).
Coldest night (TNn) at Jeffersonville by year
Year
Coldest night (TNn)
1903
-25.0 C (-13.0 F)
1904
-34.4 C (-29.9 F)
1905
-27.8 C (-18.0 F)
1906
-30.6 C (-23.1 F)
1907
-30.6 C (-23.1 F)
1908
-30.0 C (-22.0 F)
1909
-23.9 C (-11.0 F)
1910
-27.8 C (-18.0 F)
1911
-26.7 C (-16.1 F)
1912
-32.8 C (-27.0 F)
1913
-23.9 C (-11.0 F)
1914
-31.7 C (-25.1 F)
1915
-20.6 C (-5.1 F)
1916
-31.7 C (-25.1 F)
1917
-32.8 C (-27.0 F)
1918
-33.9 C (-29.0 F)
1919
-26.1 C (-15.0 F)
1920
-31.1 C (-24.0 F)
1921
-25.0 C (-13.0 F)
1922
-27.8 C (-18.0 F)
1923
-28.3 C (-18.9 F)
1924
-26.1 C (-15.0 F)
1925
-28.9 C (-20.0 F)
1926
-27.2 C (-17.0 F)
1927
-29.4 C (-20.9 F)
1928
-27.2 C (-17.0 F)
1929
-24.4 C (-11.9 F)
1930
-27.8 C (-18.0 F)
1931
-30.0 C (-22.0 F)
1932
-26.7 C (-16.1 F)
1933
-26.7 C (-16.1 F)
1934
-33.9 C (-29.0 F)
1935
-31.7 C (-25.1 F)
1936
-30.6 C (-23.1 F)
1937
-21.1 C (-6.0 F)
1938
-31.1 C (-24.0 F)
1939
-25.6 C (-14.1 F)
1940
-26.1 C (-15.0 F)
1941
-22.2 C (-8.0 F)
1942
-32.2 C (-26.0 F)
1943
-33.3 C (-27.9 F)
1944
-26.7 C (-16.1 F)
1945
-26.7 C (-16.1 F)
1946
-23.9 C (-11.0 F)
1947
-25.0 C (-13.0 F)
Wettest day (Rx1day)
The wettest day of the year at Jeffersonville, 1903 to 1947. The record is 113.0 mm (4.4 in) in 1903, marked on the chart; the median year is 58.4 mm (2.3 in).
Wettest day (Rx1day) at Jeffersonville by year
Year
Wettest day (Rx1day)
1903
113.0 mm (4.4 in)
1904
99.1 mm (3.9 in)
1905
48.3 mm (1.9 in)
1906
46.7 mm (1.8 in)
1907
62.2 mm (2.4 in)
1908
57.4 mm (2.3 in)
1909
50.0 mm (2.0 in)
1910
42.4 mm (1.7 in)
1911
46.7 mm (1.8 in)
1912
48.5 mm (1.9 in)
1913
77.2 mm (3.0 in)
1914
56.4 mm (2.2 in)
1915
57.7 mm (2.3 in)
1916
94.0 mm (3.7 in)
1917
64.0 mm (2.5 in)
1918
43.9 mm (1.7 in)
1919
76.7 mm (3.0 in)
1920
73.9 mm (2.9 in)
1921
48.5 mm (1.9 in)
1922
52.6 mm (2.1 in)
1923
58.4 mm (2.3 in)
1924
96.5 mm (3.8 in)
1925
46.2 mm (1.8 in)
1926
69.6 mm (2.7 in)
1927
70.4 mm (2.8 in)
1928
81.3 mm (3.2 in)
1929
69.9 mm (2.8 in)
1930
47.2 mm (1.9 in)
1931
80.0 mm (3.1 in)
1932
96.5 mm (3.8 in)
1933
69.1 mm (2.7 in)
1934
82.8 mm (3.3 in)
1935
50.8 mm (2.0 in)
1936
45.0 mm (1.8 in)
1937
62.7 mm (2.5 in)
1938
71.4 mm (2.8 in)
1939
35.6 mm (1.4 in)
1940
51.3 mm (2.0 in)
1941
37.6 mm (1.5 in)
1942
87.1 mm (3.4 in)
1943
47.2 mm (1.9 in)
1944
43.7 mm (1.7 in)
1945
94.5 mm (3.7 in)
1946
68.6 mm (2.7 in)
1947
51.6 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Jeffersonville, 1903 to 1947. The record is 229.8 mm (9.0 in) in 1903, marked on the chart; the median year is 93.7 mm (3.7 in).
Wettest five days (Rx5day) at Jeffersonville by year
Year
Wettest five days (Rx5day)
1903
229.8 mm (9.0 in)
1904
124.2 mm (4.9 in)
1905
78.7 mm (3.1 in)
1906
49.2 mm (1.9 in)
1907
87.3 mm (3.4 in)
1908
78.7 mm (3.1 in)
1909
71.8 mm (2.8 in)
1910
61.2 mm (2.4 in)
1911
127.4 mm (5.0 in)
1912
70.4 mm (2.8 in)
1913
80.7 mm (3.2 in)
1914
57.9 mm (2.3 in)
1915
83.0 mm (3.3 in)
1916
94.0 mm (3.7 in)
1917
64.0 mm (2.5 in)
1918
50.8 mm (2.0 in)
1919
79.3 mm (3.1 in)
1920
134.4 mm (5.3 in)
1921
84.1 mm (3.3 in)
1922
66.8 mm (2.6 in)
1923
85.1 mm (3.4 in)
1924
111.7 mm (4.4 in)
1925
93.7 mm (3.7 in)
1926
80.8 mm (3.2 in)
1927
99.1 mm (3.9 in)
1928
101.6 mm (4.0 in)
1929
90.7 mm (3.6 in)
1930
65.3 mm (2.6 in)
1931
100.4 mm (4.0 in)
1932
111.5 mm (4.4 in)
1933
113.1 mm (4.5 in)
1934
159.0 mm (6.3 in)
1935
105.9 mm (4.2 in)
1936
114.6 mm (4.5 in)
1937
94.3 mm (3.7 in)
1938
130.8 mm (5.1 in)
1939
56.7 mm (2.2 in)
1940
126.2 mm (5.0 in)
1941
71.0 mm (2.8 in)
1942
102.3 mm (4.0 in)
1943
100.5 mm (4.0 in)
1944
95.5 mm (3.8 in)
1945
164.1 mm (6.5 in)
1946
113.1 mm (4.5 in)
1947
81.0 mm (3.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Jeffersonville, 1903 to 1947. The record is 35 days in 1924, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Jeffersonville by year
Year
Longest dry spell (CDD)
1903
14 days
1904
21 days
1905
12 days
1906
16 days
1907
13 days
1908
21 days
1909
22 days
1910
14 days
1911
18 days
1912
21 days
1913
12 days
1914
20 days
1915
27 days
1916
14 days
1917
21 days
1918
19 days
1919
15 days
1920
13 days
1921
12 days
1922
18 days
1923
21 days
1924
35 days
1925
12 days
1926
18 days
1927
16 days
1928
13 days
1929
14 days
1930
18 days
1931
14 days
1932
24 days
1933
19 days
1934
14 days
1935
18 days
1936
21 days
1937
10 days
1938
23 days
1939
16 days
1940
13 days
1941
18 days
1942
19 days
1943
24 days
1944
19 days
1945
14 days
1946
21 days
1947
31 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 Jeffersonville falls on 24 May and the median first autumn frost on 24 September, which leaves a median of 120 days between them.
Fitted over all years, the growing season changes by -1.7 days per decade at this station.
Frost dates and growing season at Jeffersonville
Measure
Median, all years
Earliest period
Recent period (1917 to 1946)
Recent against earliest
Fitted trend
Last spring frost
24 May
n/a
25 May
n/a
+0.9 days per decade
First autumn frost
24 September
n/a
24 September
n/a
-0.7 days per decade
Growing days
120 days
n/a
121 days
n/a
-1.7 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
43 years, 1904 to 1946
A day with at least 60.2 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 119.9 mm (4.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Jeffersonville: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
60.2 mm (2.4 in)
5 years
76.9 mm (3.0 in)
10 years
87.6 mm (3.4 in)
25 years
100.9 mm (4.0 in)
50 years
110.5 mm (4.4 in)
Longer than the 43 years of record
100 years
119.9 mm (4.7 in)
Longer than the 43 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, 43 years of values from 1904 to 1946.
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: 99.1 mm (3.9 in) in 1904; 96.5 mm (3.8 in) in 1924; 96.5 mm (3.8 in) in 1932.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Jeffersonville, at 1923. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1923 ran 0.2 C (0.3 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Jeffersonville, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1923
-0.2
-0.3
likely
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 Jeffersonville standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Jeffersonville 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.