Record envelope, standing records and threshold days for Greenville Muni AP (USC00173353), Maine, United States, with 107 years of record.
Key Facts for Greenville Muni AP
Greenville Muni AP (USC00173353) is a weather station in Maine, United States at 45.46 latitude and -69.56 longitude, 424 m (1,392 ft) above sea level.
The station reports from 1920 to 2026, 107 years of record.
1,464 records set at Greenville Muni AP still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Greenville Muni AP set a daily record high minimum temperature of 19.4 C (66.9 F) on 8 August 2026.
About the Station
Location: Maine, United States, 45.46 latitude, -69.56 longitude.
Elevation: 424 m (1,392 ft).
Period of record: 1920 to 2026, 107 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
4 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 Greenville Muni AP. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Greenville Muni AP, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.3 C (55.9 F)
-37.8 C (-36.0 F)
3.9 C (39.0 F)
-25.6 C (-14.1 F)
Feb
12.8 C (55.0 F)
-41.1 C (-42.0 F)
3.9 C (39.0 F)
-20.0 C (-4.0 F)
Mar
23.3 C (73.9 F)
-32.8 C (-27.0 F)
19.4 C (66.9 F)
-21.1 C (-6.0 F)
Apr
28.3 C (82.9 F)
-22.2 C (-8.0 F)
21.1 C (70.0 F)
-7.8 C (18.0 F)
May
32.2 C (90.0 F)
-7.8 C (18.0 F)
27.2 C (81.0 F)
-2.2 C (28.0 F)
Jun
35.0 C (95.0 F)
-4.4 C (24.1 F)
29.4 C (84.9 F)
1.7 C (35.1 F)
Jul
35.0 C (95.0 F)
-2.8 C (27.0 F)
31.7 C (89.1 F)
10.6 C (51.1 F)
Aug
35.6 C (96.1 F)
-1.1 C (30.0 F)
30.0 C (86.0 F)
8.9 C (48.0 F)
Sep
32.8 C (91.0 F)
-6.7 C (19.9 F)
22.2 C (72.0 F)
4.4 C (39.9 F)
Oct
28.9 C (84.0 F)
-12.2 C (10.0 F)
23.3 C (73.9 F)
2.2 C (36.0 F)
Nov
23.3 C (73.9 F)
-21.1 C (-6.0 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-35.6 C (-32.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Greenville Muni AP still stand. 1936 holds the most, with 42.
Standing records at Greenville Muni AP by the year they were set
Year set
Standing records
1920
27
1921
23
1922
14
1923
26
1924
10
1925
27
1926
19
1927
21
1928
22
1929
17
1930
24
1931
17
1932
19
1933
29
1934
33
1935
20
1936
42
1937
24
1938
26
1939
22
1940
30
1941
12
1942
31
1943
32
1944
24
1945
28
1946
32
1947
31
1948
25
1949
29
1950
19
1951
17
1952
13
1953
35
1954
23
1955
18
1956
33
1957
31
1958
19
1959
21
1960
7
1961
17
1962
23
1963
27
1964
24
1965
26
1966
19
1967
21
1968
23
1969
15
1970
23
1971
18
1972
18
1973
15
1974
26
1975
5
2017
2
2018
23
2019
14
2020
26
2021
28
2022
26
2023
26
2024
21
2025
15
2026
11
All-Time Record Progression
7 new records
7 all-time records were set at Greenville Muni AP between 14 January 1957 and 20 July 2019. Each dot is a new record.
When Greenville Muni AP set new all-time records
Date
Kind
Detail
1957-01-14
Record low minimum temperature
Record low minimum temperature -37.8 C (-36.0 F)
1961-11-21
Record daily snowfall
Record daily snowfall 63.5 cm (25.0 in)
1962-02-02
Record low minimum temperature
Record low minimum temperature -41.1 C (-42.0 F)
1969-01-07
Record snow depth
Record snow depth 147.3 cm (58.0 in)
1969-02-10
Record snow depth
Record snow depth 165.1 cm (65.0 in)
1969-02-27
Record snow depth
Record snow depth 172.7 cm (68.0 in)
2019-07-20
Record high minimum temperature
Record high minimum temperature 22.8 C (73.0 F)
Wettest Day of Each Month
Sep: 152.7 mm (6.0 in)
The wettest day on record for each calendar month at Greenville Muni AP. The most was 152.7 mm (6.0 in) on 30 September 1946.
Record daily precipitation for each month at Greenville Muni AP
Month
Record daily precipitation (mm)
Date
Jan
67.1 mm (2.6 in)
24 January 1935
Feb
58.7 mm (2.3 in)
5 February 1947
Mar
102.6 mm (4.0 in)
12 March 1936
Apr
65.0 mm (2.6 in)
13 April 1940
May
44.5 mm (1.8 in)
27 May 1927
Jun
64.3 mm (2.5 in)
17 June 2023
Jul
84.1 mm (3.3 in)
9 July 1938
Aug
58.4 mm (2.3 in)
15 August 1927
Sep
152.7 mm (6.0 in)
30 September 1946
Oct
113.5 mm (4.5 in)
14 October 2022
Nov
117.3 mm (4.6 in)
26 November 1950
Dec
131.1 mm (5.2 in)
6 December 2020
Period of Record Coverage
1920 to 2026
Complete yearUnder 90 percent of days
66 years of record at Greenville Muni AP, 1920 to 2026. 4 years have data for under 90 percent of days and are left out of rankings: 1927, 1975, 2017, 2026.
Cooler than the station meanWarmer than the station mean
One stripe for each of 59 complete years at Greenville Muni AP, 1920 to 2025. Blue stripes are years cooler than the station's own mean of 4.4 C (39.9 F); red stripes are warmer. The coolest year was 1972, at 2.8 C (37.1 F), and the warmest was 2024, at 6.9 C (44.4 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Greenville Muni AP as warming stripes, 1920 to 2025
Year
Annual mean temperature
Difference from the station mean
1920
4.4 C
-0.04 C
1921
5.3 C
+0.85 C
1922
4.5 C
+0.05 C
1923
3.7 C
-0.71 C
1924
3.9 C
-0.52 C
1925
3.9 C
-0.52 C
1926
3.1 C
-1.32 C
1928
4.1 C
-0.35 C
1929
4.2 C
-0.21 C
1930
5.0 C
+0.56 C
1931
5.8 C
+1.36 C
1932
5.0 C
+0.61 C
1933
4.2 C
-0.25 C
1934
3.6 C
-0.81 C
1935
3.8 C
-0.59 C
1936
3.9 C
-0.51 C
1937
5.2 C
+0.79 C
1938
4.8 C
+0.43 C
1939
3.6 C
-0.81 C
1940
3.3 C
-1.08 C
1941
4.3 C
-0.10 C
1942
4.3 C
-0.06 C
1943
3.1 C
-1.30 C
1944
3.9 C
-0.48 C
1945
4.1 C
-0.26 C
1946
4.1 C
-0.35 C
1947
4.0 C
-0.38 C
1948
3.8 C
-0.57 C
1949
4.9 C
+0.51 C
1950
4.1 C
-0.35 C
1951
4.5 C
+0.14 C
1952
5.0 C
+0.58 C
1953
5.8 C
+1.44 C
1954
4.6 C
+0.15 C
1955
4.6 C
+0.20 C
1956
3.8 C
-0.58 C
1957
4.8 C
+0.44 C
1958
4.0 C
-0.36 C
1959
4.2 C
-0.19 C
1960
4.5 C
+0.07 C
1961
4.2 C
-0.22 C
1962
3.2 C
-1.18 C
1963
3.6 C
-0.82 C
1964
4.0 C
-0.45 C
1965
3.3 C
-1.10 C
1966
4.3 C
-0.14 C
1967
3.4 C
-0.99 C
1969
4.1 C
-0.30 C
1971
3.8 C
-0.64 C
1972
2.8 C
-1.57 C
1973
5.2 C
+0.84 C
1974
3.7 C
-0.67 C
2019
4.5 C
+0.10 C
2020
6.2 C
+1.82 C
2021
6.6 C
+2.20 C
2022
6.2 C
+1.82 C
2023
6.7 C
+2.31 C
2024
6.9 C
+2.49 C
2025
5.2 C
+0.77 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1920 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.4) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Greenville Muni AP
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1920 to 2025
59
Rise
Mean daily maximum
0.08 C (0.01 to 0.14) per decade
0.14 F (0.01 to 0.26) per decade
1920 to 2025
59
Rise
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.6) per decade
1920 to 2025
59
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
1920 to 2026
Yearly extremes at Greenville Muni AP: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.6 C (96.1 F)
1944
32.2 C (90.0 F)
66
Coldest night (TNn)
-41.1 C (-42.0 F)
1962
-30.0 C (-22.0 F)
66
Wettest day (Rx1day)
152.7 mm (6.0 in)
1946
52.2 mm (2.1 in)
66
Wettest five days (Rx5day)
201.6 mm (7.9 in)
1932
85.3 mm (3.4 in)
65
Longest dry spell (CDD)
26 days
1964
14 days
66
Hottest day (TXx)
The hottest day of the year at Greenville Muni AP, 1920 to 2026. The record is 35.6 C (96.1 F) in 1944, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Greenville Muni AP by year
Year
Hottest day (TXx)
1920
31.1 C (88.0 F)
1921
35.0 C (95.0 F)
1922
30.0 C (86.0 F)
1923
32.2 C (90.0 F)
1924
30.6 C (87.1 F)
1925
29.4 C (84.9 F)
1926
33.3 C (91.9 F)
1927
29.4 C (84.9 F)
1928
31.7 C (89.1 F)
1929
31.7 C (89.1 F)
1930
31.1 C (88.0 F)
1931
31.1 C (88.0 F)
1932
32.2 C (90.0 F)
1933
31.7 C (89.1 F)
1934
28.9 C (84.0 F)
1935
31.7 C (89.1 F)
1936
28.9 C (84.0 F)
1937
32.8 C (91.0 F)
1938
32.2 C (90.0 F)
1939
32.2 C (90.0 F)
1940
31.1 C (88.0 F)
1941
33.3 C (91.9 F)
1942
32.8 C (91.0 F)
1943
32.8 C (91.0 F)
1944
35.6 C (96.1 F)
1945
32.2 C (90.0 F)
1946
33.3 C (91.9 F)
1947
33.9 C (93.0 F)
1948
32.8 C (91.0 F)
1949
33.9 C (93.0 F)
1950
30.6 C (87.1 F)
1951
30.0 C (86.0 F)
1952
35.0 C (95.0 F)
1953
33.3 C (91.9 F)
1954
31.1 C (88.0 F)
1955
35.0 C (95.0 F)
1956
32.8 C (91.0 F)
1957
31.7 C (89.1 F)
1958
31.1 C (88.0 F)
1959
32.8 C (91.0 F)
1960
30.6 C (87.1 F)
1961
31.7 C (89.1 F)
1962
31.7 C (89.1 F)
1963
33.3 C (91.9 F)
1964
33.3 C (91.9 F)
1965
32.2 C (90.0 F)
1966
32.2 C (90.0 F)
1967
31.1 C (88.0 F)
1968
32.2 C (90.0 F)
1969
33.3 C (91.9 F)
1970
32.2 C (90.0 F)
1971
32.2 C (90.0 F)
1972
30.6 C (87.1 F)
1973
33.9 C (93.0 F)
1974
30.6 C (87.1 F)
1975
29.4 C (84.9 F)
2017
-17.8 C (0.0 F)
2018
32.2 C (90.0 F)
2019
32.2 C (90.0 F)
2020
32.8 C (91.0 F)
2021
32.8 C (91.0 F)
2022
31.7 C (89.1 F)
2023
32.8 C (91.0 F)
2024
33.9 C (93.0 F)
2025
33.3 C (91.9 F)
2026
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Greenville Muni AP, 1920 to 2026. The record is -41.1 C (-42.0 F) in 1962, marked on the chart; the median year is -30.0 C (-22.0 F).
Coldest night (TNn) at Greenville Muni AP by year
Year
Coldest night (TNn)
1920
-33.9 C (-29.0 F)
1921
-26.7 C (-16.1 F)
1922
-33.9 C (-29.0 F)
1923
-30.0 C (-22.0 F)
1924
-32.2 C (-26.0 F)
1925
-31.7 C (-25.1 F)
1926
-26.7 C (-16.1 F)
1927
-27.8 C (-18.0 F)
1928
-27.2 C (-17.0 F)
1929
-27.2 C (-17.0 F)
1930
-31.1 C (-24.0 F)
1931
-26.7 C (-16.1 F)
1932
-23.9 C (-11.0 F)
1933
-35.6 C (-32.1 F)
1934
-33.3 C (-27.9 F)
1935
-30.0 C (-22.0 F)
1936
-28.9 C (-20.0 F)
1937
-27.8 C (-18.0 F)
1938
-32.8 C (-27.0 F)
1939
-29.4 C (-20.9 F)
1940
-28.9 C (-20.0 F)
1941
-26.7 C (-16.1 F)
1942
-33.3 C (-27.9 F)
1943
-37.2 C (-35.0 F)
1944
-32.8 C (-27.0 F)
1945
-31.1 C (-24.0 F)
1946
-28.9 C (-20.0 F)
1947
-28.3 C (-18.9 F)
1948
-35.6 C (-32.1 F)
1949
-30.0 C (-22.0 F)
1950
-29.4 C (-20.9 F)
1951
-32.8 C (-27.0 F)
1952
-30.6 C (-23.1 F)
1953
-25.0 C (-13.0 F)
1954
-28.3 C (-18.9 F)
1955
-30.6 C (-23.1 F)
1956
-30.6 C (-23.1 F)
1957
-37.8 C (-36.0 F)
1958
-31.7 C (-25.1 F)
1959
-29.4 C (-20.9 F)
1960
-27.8 C (-18.0 F)
1961
-33.3 C (-27.9 F)
1962
-41.1 C (-42.0 F)
1963
-31.1 C (-24.0 F)
1964
-27.2 C (-17.0 F)
1965
-31.7 C (-25.1 F)
1966
-27.8 C (-18.0 F)
1967
-34.4 C (-29.9 F)
1968
-32.2 C (-26.0 F)
1969
-27.2 C (-17.0 F)
1970
-30.0 C (-22.0 F)
1971
-36.7 C (-34.1 F)
1972
-35.6 C (-32.1 F)
1973
-28.3 C (-18.9 F)
1974
-32.2 C (-26.0 F)
1975
-32.8 C (-27.0 F)
2017
-25.0 C (-13.0 F)
2018
-26.1 C (-15.0 F)
2019
-22.8 C (-9.0 F)
2020
-24.4 C (-11.9 F)
2021
-21.1 C (-6.0 F)
2022
-26.1 C (-15.0 F)
2023
-31.1 C (-24.0 F)
2024
-18.3 C (-0.9 F)
2025
-23.3 C (-9.9 F)
2026
-25.6 C (-14.1 F)
Wettest day (Rx1day)
The wettest day of the year at Greenville Muni AP, 1920 to 2026. The record is 152.7 mm (6.0 in) in 1946, marked on the chart; the median year is 52.2 mm (2.1 in).
Wettest day (Rx1day) at Greenville Muni AP by year
Year
Wettest day (Rx1day)
1920
47.2 mm (1.9 in)
1921
71.6 mm (2.8 in)
1922
44.7 mm (1.8 in)
1923
48.5 mm (1.9 in)
1924
85.3 mm (3.4 in)
1925
43.2 mm (1.7 in)
1926
43.9 mm (1.7 in)
1927
78.2 mm (3.1 in)
1928
41.7 mm (1.6 in)
1929
39.4 mm (1.6 in)
1930
43.4 mm (1.7 in)
1931
56.9 mm (2.2 in)
1932
143.0 mm (5.6 in)
1933
43.2 mm (1.7 in)
1934
39.1 mm (1.5 in)
1935
67.1 mm (2.6 in)
1936
102.6 mm (4.0 in)
1937
48.5 mm (1.9 in)
1938
84.1 mm (3.3 in)
1939
32.8 mm (1.3 in)
1940
65.0 mm (2.6 in)
1941
49.0 mm (1.9 in)
1942
58.2 mm (2.3 in)
1943
89.2 mm (3.5 in)
1944
58.4 mm (2.3 in)
1945
59.2 mm (2.3 in)
1946
152.7 mm (6.0 in)
1947
58.7 mm (2.3 in)
1948
45.0 mm (1.8 in)
1949
37.3 mm (1.5 in)
1950
117.3 mm (4.6 in)
1951
60.7 mm (2.4 in)
1952
43.2 mm (1.7 in)
1953
47.2 mm (1.9 in)
1954
73.9 mm (2.9 in)
1955
53.3 mm (2.1 in)
1956
42.9 mm (1.7 in)
1957
63.2 mm (2.5 in)
1958
50.8 mm (2.0 in)
1959
66.8 mm (2.6 in)
1960
77.2 mm (3.0 in)
1961
73.4 mm (2.9 in)
1962
57.9 mm (2.3 in)
1963
50.5 mm (2.0 in)
1964
51.1 mm (2.0 in)
1965
45.0 mm (1.8 in)
1966
92.5 mm (3.6 in)
1967
37.1 mm (1.5 in)
1968
55.9 mm (2.2 in)
1969
81.0 mm (3.2 in)
1970
65.3 mm (2.6 in)
1971
38.6 mm (1.5 in)
1972
50.8 mm (2.0 in)
1973
83.3 mm (3.3 in)
1974
52.1 mm (2.1 in)
1975
30.5 mm (1.2 in)
2017
0.0 mm (0.00 in)
2018
35.8 mm (1.4 in)
2019
47.5 mm (1.9 in)
2020
131.1 mm (5.2 in)
2021
52.3 mm (2.1 in)
2022
113.5 mm (4.5 in)
2023
113.3 mm (4.5 in)
2024
48.0 mm (1.9 in)
2025
49.3 mm (1.9 in)
2026
40.6 mm (1.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Greenville Muni AP, 1920 to 2026. The record is 201.6 mm (7.9 in) in 1932, marked on the chart; the median year is 85.3 mm (3.4 in).
Wettest five days (Rx5day) at Greenville Muni AP by year
Year
Wettest five days (Rx5day)
1920
84.6 mm (3.3 in)
1921
76.5 mm (3.0 in)
1922
88.6 mm (3.5 in)
1923
104.2 mm (4.1 in)
1924
111.4 mm (4.4 in)
1925
83.4 mm (3.3 in)
1926
74.1 mm (2.9 in)
1927
127.5 mm (5.0 in)
1928
67.7 mm (2.7 in)
1929
66.1 mm (2.6 in)
1930
68.1 mm (2.7 in)
1931
82.7 mm (3.3 in)
1932
201.6 mm (7.9 in)
1933
67.9 mm (2.7 in)
1934
80.5 mm (3.2 in)
1935
83.8 mm (3.3 in)
1936
142.2 mm (5.6 in)
1937
141.2 mm (5.6 in)
1938
89.9 mm (3.5 in)
1939
70.6 mm (2.8 in)
1940
92.2 mm (3.6 in)
1941
97.5 mm (3.8 in)
1942
70.4 mm (2.8 in)
1943
148.2 mm (5.8 in)
1944
59.7 mm (2.4 in)
1945
88.8 mm (3.5 in)
1946
158.0 mm (6.2 in)
1947
107.5 mm (4.2 in)
1948
97.0 mm (3.8 in)
1949
55.2 mm (2.2 in)
1950
183.7 mm (7.2 in)
1951
92.3 mm (3.6 in)
1952
86.4 mm (3.4 in)
1953
89.6 mm (3.5 in)
1954
117.8 mm (4.6 in)
1955
86.8 mm (3.4 in)
1956
65.1 mm (2.6 in)
1957
97.9 mm (3.9 in)
1958
71.3 mm (2.8 in)
1959
122.0 mm (4.8 in)
1960
85.3 mm (3.4 in)
1961
82.0 mm (3.2 in)
1962
88.2 mm (3.5 in)
1963
84.5 mm (3.3 in)
1964
64.9 mm (2.6 in)
1965
66.8 mm (2.6 in)
1966
125.3 mm (4.9 in)
1967
66.9 mm (2.6 in)
1968
73.4 mm (2.9 in)
1969
117.4 mm (4.6 in)
1970
87.7 mm (3.5 in)
1971
58.1 mm (2.3 in)
1972
68.0 mm (2.7 in)
1973
158.7 mm (6.2 in)
1974
83.2 mm (3.3 in)
1975
47.8 mm (1.9 in)
2017
n/a
2018
69.4 mm (2.7 in)
2019
73.0 mm (2.9 in)
2020
149.4 mm (5.9 in)
2021
58.0 mm (2.3 in)
2022
168.9 mm (6.6 in)
2023
117.6 mm (4.6 in)
2024
86.9 mm (3.4 in)
2025
70.5 mm (2.8 in)
2026
61.7 mm (2.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Greenville Muni AP, 1920 to 2026. The record is 26 days in 1964, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Greenville Muni AP by year
Year
Longest dry spell (CDD)
1920
14 days
1921
13 days
1922
14 days
1923
12 days
1924
23 days
1925
18 days
1926
11 days
1927
21 days
1928
16 days
1929
13 days
1930
17 days
1931
13 days
1932
12 days
1933
12 days
1934
15 days
1935
15 days
1936
14 days
1937
13 days
1938
15 days
1939
25 days
1940
14 days
1941
19 days
1942
15 days
1943
11 days
1944
24 days
1945
16 days
1946
23 days
1947
9 days
1948
16 days
1949
11 days
1950
15 days
1951
15 days
1952
16 days
1953
16 days
1954
14 days
1955
10 days
1956
18 days
1957
16 days
1958
11 days
1959
19 days
1960
11 days
1961
24 days
1962
13 days
1963
17 days
1964
26 days
1965
14 days
1966
13 days
1967
11 days
1968
11 days
1969
11 days
1970
25 days
1971
14 days
1972
13 days
1973
13 days
1974
12 days
1975
11 days
2017
3 days
2018
10 days
2019
8 days
2020
14 days
2021
24 days
2022
13 days
2023
16 days
2024
17 days
2025
17 days
2026
14 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
59 years with a frost
Across 59 years with a frost, the median last spring frost at Greenville Muni AP falls on 27 May and the median first autumn frost on 19 September, which leaves a median of 113 days between them.
Fitted over all years, the growing season changes by +4.6 days per decade at this station.
Frost dates and growing season at Greenville Muni AP
Measure
Median, all years
Earliest period
Recent period (1950 to 2025)
Recent against earliest
Fitted trend
Last spring frost
27 May
n/a
27 May
n/a
-1.6 days per decade
First autumn frost
19 September
n/a
16 September
n/a
+3.0 days per decade
Growing days
113 days
n/a
113 days
n/a
+4.6 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
61 years, 1920 to 2025
A day with at least 56.0 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 181.1 mm (7.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Greenville Muni AP: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
56.0 mm (2.2 in)
5 years
77.5 mm (3.1 in)
10 years
95.5 mm (3.8 in)
25 years
124.0 mm (4.9 in)
50 years
150.1 mm (5.9 in)
100 years
181.1 mm (7.1 in)
Longer than the 61 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, 61 years of values from 1920 to 2025.
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: 152.7 mm (6.0 in) in 1946; 143.0 mm (5.6 in) in 1932; 131.1 mm (5.2 in) in 2020.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Greenville Muni AP standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Greenville Muni AP 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.