Record envelope, standing records and threshold days for Willis 5 SSW (USC00209014), Michigan, United States, with 55 years of record.
Key Facts for Willis 5 SSW
Willis 5 SSW (USC00209014) is a weather station in Michigan, United States at 42.08 latitude and -83.58 longitude, 201 m (660 ft) above sea level.
The station reports from 1929 to 1983, 55 years of record.
1,464 records set at Willis 5 SSW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Willis 5 SSW set a daily record precipitation of 49.8 mm (2.0 in) on 13 October 1983.
About the Station
Location: Michigan, United States, 42.08 latitude, -83.58 longitude.
Elevation: 201 m (660 ft).
Period of record: 1929 to 1983, 55 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
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 Willis 5 SSW. 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 Willis 5 SSW, 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)
-30.6 C (-23.1 F)
n/a
n/a
Feb
19.4 C (66.9 F)
-28.3 C (-18.9 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-11.1 C (12.0 F)
n/a
n/a
May
33.3 C (91.9 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
39.4 C (102.9 F)
0.6 C (33.1 F)
n/a
n/a
Jul
40.6 C (105.1 F)
3.3 C (37.9 F)
n/a
n/a
Aug
38.3 C (100.9 F)
0.6 C (33.1 F)
n/a
n/a
Sep
38.3 C (100.9 F)
-3.9 C (25.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-10.6 C (12.9 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Dec
20.0 C (68.0 F)
-28.3 C (-18.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Willis 5 SSW still stand. 1934 holds the most, with 50.
Standing records at Willis 5 SSW by the year they were set
Year set
Standing records
1929
4
1930
46
1931
38
1932
35
1933
44
1934
50
1935
27
1936
42
1937
24
1938
28
1939
31
1940
29
1941
31
1942
27
1943
26
1944
23
1945
39
1946
25
1947
21
1948
17
1949
27
1950
34
1951
27
1952
26
1953
31
1954
24
1955
18
1956
20
1957
18
1958
27
1959
17
1960
23
1961
13
1962
27
1963
41
1964
34
1965
37
1966
25
1967
23
1968
20
1969
17
1970
19
1971
28
1972
23
1973
22
1974
21
1975
17
1976
36
1977
31
1978
22
1979
35
1980
10
1981
28
1982
24
1983
12
All-Time Record Progression
7 new records
7 all-time records were set at Willis 5 SSW between 15 January 1972 and 10 January 1982. Each dot is a new record.
When Willis 5 SSW set new all-time records
Date
Kind
Detail
1972-01-15
Record low maximum temperature
Record low maximum temperature -18.3 C (-0.9 F)
1972-06-20
Record daily precipitation
Record daily precipitation 96.8 mm (3.8 in)
1976-01-18
Record low minimum temperature
Record low minimum temperature -28.9 C (-20.0 F)
1978-02-01
Record snow depth
Record snow depth 81.3 cm (32.0 in)
1978-02-05
Record snow depth
Record snow depth 83.8 cm (33.0 in)
1981-01-04
Record low minimum temperature
Record low minimum temperature -30.6 C (-23.1 F)
1982-01-10
Record low maximum temperature
Record low maximum temperature -19.4 C (-2.9 F)
Wettest Day of Each Month
Jun: 96.8 mm (3.8 in)
The wettest day on record for each calendar month at Willis 5 SSW. The most was 96.8 mm (3.8 in) on 20 June 1972.
Record daily precipitation for each month at Willis 5 SSW
Month
Record daily precipitation (mm)
Date
Jan
38.6 mm (1.5 in)
12 January 1960
Feb
35.1 mm (1.4 in)
19 February 1939
Mar
46.7 mm (1.8 in)
25 March 1954
Apr
63.0 mm (2.5 in)
29 April 1956
May
74.2 mm (2.9 in)
21 May 1939
Jun
96.8 mm (3.8 in)
20 June 1972
Jul
69.6 mm (2.7 in)
22 July 1951
Aug
90.2 mm (3.6 in)
17 August 1949
Sep
67.8 mm (2.7 in)
3 September 1932
Oct
61.5 mm (2.4 in)
1 October 1945
Nov
48.3 mm (1.9 in)
2 November 1982
Dec
72.4 mm (2.9 in)
21 December 1967
Period of Record Coverage
1929 to 1983
Complete yearUnder 90 percent of days
55 years of record at Willis 5 SSW, 1929 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1929, 1982, 1983.
Cooler than the station meanWarmer than the station mean
One stripe for each of 51 complete years at Willis 5 SSW, 1930 to 1981. Blue stripes are years cooler than the station's own mean of 8.9 C (48.0 F); red stripes are warmer. The coolest year was 1978, at 7.5 C (45.5 F), and the warmest was 1931, at 10.8 C (51.4 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Willis 5 SSW as warming stripes, 1930 to 1981
Year
Annual mean temperature
Difference from the station mean
1930
9.3 C
+0.45 C
1931
10.8 C
+1.93 C
1932
9.4 C
+0.55 C
1933
9.9 C
+0.98 C
1934
9.2 C
+0.32 C
1935
8.7 C
-0.17 C
1936
8.6 C
-0.25 C
1937
9.2 C
+0.30 C
1938
10.3 C
+1.41 C
1939
10.0 C
+1.17 C
1940
8.5 C
-0.35 C
1941
10.3 C
+1.43 C
1942
9.3 C
+0.38 C
1943
8.5 C
-0.37 C
1944
9.2 C
+0.28 C
1945
8.5 C
-0.38 C
1946
9.9 C
+1.03 C
1947
8.8 C
-0.09 C
1948
9.1 C
+0.24 C
1949
10.3 C
+1.39 C
1950
8.2 C
-0.67 C
1951
8.6 C
-0.32 C
1952
9.6 C
+0.70 C
1953
10.1 C
+1.18 C
1954
9.3 C
+0.44 C
1955
9.6 C
+0.72 C
1956
8.7 C
-0.13 C
1957
8.6 C
-0.25 C
1958
8.1 C
-0.74 C
1959
9.0 C
+0.14 C
1960
8.2 C
-0.63 C
1961
8.9 C
-0.02 C
1962
8.2 C
-0.63 C
1963
7.7 C
-1.13 C
1964
8.9 C
+0.05 C
1965
8.4 C
-0.45 C
1966
8.1 C
-0.79 C
1967
8.2 C
-0.72 C
1968
8.7 C
-0.21 C
1969
8.3 C
-0.57 C
1970
8.4 C
-0.47 C
1971
8.9 C
+0.00 C
1972
7.9 C
-0.94 C
1973
9.5 C
+0.67 C
1974
8.2 C
-0.69 C
1975
9.0 C
+0.08 C
1976
7.7 C
-1.13 C
1978
7.5 C
-1.38 C
1979
7.8 C
-1.09 C
1980
8.0 C
-0.91 C
1981
8.3 C
-0.58 C
The annual mean temperature here has fallen by 0.3 C (0.2 to 0.4) per decade over 1930 to 1981. In Fahrenheit: 0.6 F (0.4 to 0.8) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Willis 5 SSW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.3 C (-0.4 to -0.2) per decade
-0.6 F (-0.8 to -0.4) per decade
1930 to 1981
51
Fall
Mean daily maximum
-0.3 C (-0.4 to -0.1) per decade
-0.5 F (-0.7 to -0.2) per decade
1930 to 1981
51
Fall
Mean daily minimum
-0.4 C (-0.5 to -0.3) per decade
-0.7 F (-0.9 to -0.5) per decade
1930 to 1981
51
Fall
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
1929 to 1983
Yearly extremes at Willis 5 SSW: 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)
1934
35.0 C (95.0 F)
55
Coldest night (TNn)
-30.6 C (-23.1 F)
1981
-23.9 C (-11.0 F)
55
Wettest day (Rx1day)
96.8 mm (3.8 in)
1972
45.7 mm (1.8 in)
55
Wettest five days (Rx5day)
121.6 mm (4.8 in)
1983
70.9 mm (2.8 in)
54
Longest dry spell (CDD)
44 days
1969
15 days
55
Hottest day (TXx)
The hottest day of the year at Willis 5 SSW, 1929 to 1983. The record is 40.6 C (105.1 F) in 1934, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Willis 5 SSW by year
Year
Hottest day (TXx)
1929
5.6 C (42.1 F)
1930
37.8 C (100.0 F)
1931
36.1 C (97.0 F)
1932
36.1 C (97.0 F)
1933
37.2 C (99.0 F)
1934
40.6 C (105.1 F)
1935
36.7 C (98.1 F)
1936
40.0 C (104.0 F)
1937
35.0 C (95.0 F)
1938
33.3 C (91.9 F)
1939
38.3 C (100.9 F)
1940
36.7 C (98.1 F)
1941
37.8 C (100.0 F)
1942
35.0 C (95.0 F)
1943
35.6 C (96.1 F)
1944
35.6 C (96.1 F)
1945
33.9 C (93.0 F)
1946
35.6 C (96.1 F)
1947
35.6 C (96.1 F)
1948
36.1 C (97.0 F)
1949
35.6 C (96.1 F)
1950
33.3 C (91.9 F)
1951
35.0 C (95.0 F)
1952
37.2 C (99.0 F)
1953
38.3 C (100.9 F)
1954
37.8 C (100.0 F)
1955
36.1 C (97.0 F)
1956
34.4 C (93.9 F)
1957
34.4 C (93.9 F)
1958
32.8 C (91.0 F)
1959
33.9 C (93.0 F)
1960
33.3 C (91.9 F)
1961
33.3 C (91.9 F)
1962
33.3 C (91.9 F)
1963
35.0 C (95.0 F)
1964
36.1 C (97.0 F)
1965
35.0 C (95.0 F)
1966
35.0 C (95.0 F)
1967
33.3 C (91.9 F)
1968
33.3 C (91.9 F)
1969
32.8 C (91.0 F)
1970
33.9 C (93.0 F)
1971
37.2 C (99.0 F)
1972
33.9 C (93.0 F)
1973
34.4 C (93.9 F)
1974
35.0 C (95.0 F)
1975
34.4 C (93.9 F)
1976
35.0 C (95.0 F)
1977
35.6 C (96.1 F)
1978
37.2 C (99.0 F)
1979
32.8 C (91.0 F)
1980
34.4 C (93.9 F)
1981
32.8 C (91.0 F)
1982
32.2 C (90.0 F)
1983
35.6 C (96.1 F)
Coldest night (TNn)
The coldest night of the year at Willis 5 SSW, 1929 to 1983. The record is -30.6 C (-23.1 F) in 1981, marked on the chart; the median year is -23.9 C (-11.0 F).
Coldest night (TNn) at Willis 5 SSW by year
Year
Coldest night (TNn)
1929
-16.7 C (1.9 F)
1930
-25.0 C (-13.0 F)
1931
-16.1 C (3.0 F)
1932
-22.8 C (-9.0 F)
1933
-25.6 C (-14.1 F)
1934
-27.8 C (-18.0 F)
1935
-22.8 C (-9.0 F)
1936
-26.7 C (-16.1 F)
1937
-22.8 C (-9.0 F)
1938
-26.1 C (-15.0 F)
1939
-18.3 C (-0.9 F)
1940
-24.4 C (-11.9 F)
1941
-15.0 C (5.0 F)
1942
-22.8 C (-9.0 F)
1943
-25.6 C (-14.1 F)
1944
-28.3 C (-18.9 F)
1945
-23.9 C (-11.0 F)
1946
-20.0 C (-4.0 F)
1947
-18.3 C (-0.9 F)
1948
-24.4 C (-11.9 F)
1949
-17.2 C (1.0 F)
1950
-28.3 C (-18.9 F)
1951
-25.0 C (-13.0 F)
1952
-16.1 C (3.0 F)
1953
-18.9 C (-2.0 F)
1954
-20.0 C (-4.0 F)
1955
-20.6 C (-5.1 F)
1956
-21.1 C (-6.0 F)
1957
-27.8 C (-18.0 F)
1958
-23.9 C (-11.0 F)
1959
-22.8 C (-9.0 F)
1960
-24.4 C (-11.9 F)
1961
-22.8 C (-9.0 F)
1962
-22.8 C (-9.0 F)
1963
-27.2 C (-17.0 F)
1964
-22.8 C (-9.0 F)
1965
-22.2 C (-8.0 F)
1966
-23.3 C (-9.9 F)
1967
-25.0 C (-13.0 F)
1968
-23.9 C (-11.0 F)
1969
-20.6 C (-5.1 F)
1970
-27.2 C (-17.0 F)
1971
-23.3 C (-9.9 F)
1972
-26.1 C (-15.0 F)
1973
-25.0 C (-13.0 F)
1974
-25.0 C (-13.0 F)
1975
-23.9 C (-11.0 F)
1976
-28.9 C (-20.0 F)
1977
-26.7 C (-16.1 F)
1978
-26.7 C (-16.1 F)
1979
-28.3 C (-18.9 F)
1980
-27.2 C (-17.0 F)
1981
-30.6 C (-23.1 F)
1982
-27.8 C (-18.0 F)
1983
-16.1 C (3.0 F)
Wettest day (Rx1day)
The wettest day of the year at Willis 5 SSW, 1929 to 1983. The record is 96.8 mm (3.8 in) in 1972, marked on the chart; the median year is 45.7 mm (1.8 in).
Wettest day (Rx1day) at Willis 5 SSW by year
Year
Wettest day (Rx1day)
1929
15.2 mm (0.6 in)
1930
43.4 mm (1.7 in)
1931
40.6 mm (1.6 in)
1932
67.8 mm (2.7 in)
1933
39.9 mm (1.6 in)
1934
38.6 mm (1.5 in)
1935
79.0 mm (3.1 in)
1936
53.1 mm (2.1 in)
1937
42.7 mm (1.7 in)
1938
33.0 mm (1.3 in)
1939
74.2 mm (2.9 in)
1940
27.9 mm (1.1 in)
1941
44.7 mm (1.8 in)
1942
45.7 mm (1.8 in)
1943
55.4 mm (2.2 in)
1944
44.5 mm (1.8 in)
1945
61.5 mm (2.4 in)
1946
59.4 mm (2.3 in)
1947
50.8 mm (2.0 in)
1948
43.2 mm (1.7 in)
1949
90.2 mm (3.6 in)
1950
44.5 mm (1.8 in)
1951
69.6 mm (2.7 in)
1952
28.7 mm (1.1 in)
1953
36.3 mm (1.4 in)
1954
46.7 mm (1.8 in)
1955
81.3 mm (3.2 in)
1956
66.3 mm (2.6 in)
1957
44.7 mm (1.8 in)
1958
46.2 mm (1.8 in)
1959
41.9 mm (1.6 in)
1960
38.6 mm (1.5 in)
1961
48.5 mm (1.9 in)
1962
49.3 mm (1.9 in)
1963
26.4 mm (1.0 in)
1964
67.8 mm (2.7 in)
1965
44.5 mm (1.8 in)
1966
45.7 mm (1.8 in)
1967
77.5 mm (3.1 in)
1968
59.9 mm (2.4 in)
1969
40.4 mm (1.6 in)
1970
46.2 mm (1.8 in)
1971
45.2 mm (1.8 in)
1972
96.8 mm (3.8 in)
1973
44.7 mm (1.8 in)
1974
53.6 mm (2.1 in)
1975
43.7 mm (1.7 in)
1976
39.4 mm (1.6 in)
1977
37.3 mm (1.5 in)
1978
36.6 mm (1.4 in)
1979
43.2 mm (1.7 in)
1980
51.3 mm (2.0 in)
1981
45.7 mm (1.8 in)
1982
48.3 mm (1.9 in)
1983
89.7 mm (3.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Willis 5 SSW, 1929 to 1983. The record is 121.6 mm (4.8 in) in 1983, marked on the chart; the median year is 70.9 mm (2.8 in).
Wettest five days (Rx5day) at Willis 5 SSW by year
Year
Wettest five days (Rx5day)
1929
n/a
1930
76.5 mm (3.0 in)
1931
39.8 mm (1.6 in)
1932
55.5 mm (2.2 in)
1933
22.1 mm (0.9 in)
1934
46.7 mm (1.8 in)
1935
27.5 mm (1.1 in)
1936
1.3 mm (0.05 in)
1937
44.7 mm (1.8 in)
1938
41.2 mm (1.6 in)
1939
45.4 mm (1.8 in)
1940
69.4 mm (2.7 in)
1941
67.8 mm (2.7 in)
1942
56.4 mm (2.2 in)
1943
79.7 mm (3.1 in)
1944
65.0 mm (2.6 in)
1945
112.5 mm (4.4 in)
1946
85.8 mm (3.4 in)
1947
92.2 mm (3.6 in)
1948
66.1 mm (2.6 in)
1949
90.5 mm (3.6 in)
1950
90.0 mm (3.5 in)
1951
69.9 mm (2.8 in)
1952
44.1 mm (1.7 in)
1953
53.6 mm (2.1 in)
1954
69.6 mm (2.7 in)
1955
82.6 mm (3.3 in)
1956
115.1 mm (4.5 in)
1957
78.0 mm (3.1 in)
1958
80.6 mm (3.2 in)
1959
74.2 mm (2.9 in)
1960
104.2 mm (4.1 in)
1961
74.0 mm (2.9 in)
1962
57.2 mm (2.3 in)
1963
61.0 mm (2.4 in)
1964
71.4 mm (2.8 in)
1965
73.9 mm (2.9 in)
1966
88.8 mm (3.5 in)
1967
99.5 mm (3.9 in)
1968
103.2 mm (4.1 in)
1969
66.2 mm (2.6 in)
1970
56.1 mm (2.2 in)
1971
55.9 mm (2.2 in)
1972
100.9 mm (4.0 in)
1973
56.4 mm (2.2 in)
1974
57.5 mm (2.3 in)
1975
77.8 mm (3.1 in)
1976
72.9 mm (2.9 in)
1977
86.8 mm (3.4 in)
1978
56.1 mm (2.2 in)
1979
70.3 mm (2.8 in)
1980
77.0 mm (3.0 in)
1981
116.7 mm (4.6 in)
1982
97.0 mm (3.8 in)
1983
121.6 mm (4.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Willis 5 SSW, 1929 to 1983. The record is 44 days in 1969, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Willis 5 SSW by year
Year
Longest dry spell (CDD)
1929
2 days
1930
16 days
1931
3 days
1932
14 days
1933
14 days
1934
7 days
1935
3 days
1936
7 days
1937
3 days
1938
3 days
1939
4 days
1940
3 days
1941
3 days
1942
4 days
1943
5 days
1944
25 days
1945
14 days
1946
17 days
1947
15 days
1948
18 days
1949
17 days
1950
12 days
1951
15 days
1952
17 days
1953
25 days
1954
15 days
1955
27 days
1956
28 days
1957
23 days
1958
23 days
1959
19 days
1960
18 days
1961
24 days
1962
13 days
1963
32 days
1964
16 days
1965
15 days
1966
19 days
1967
21 days
1968
9 days
1969
44 days
1970
15 days
1971
14 days
1972
14 days
1973
16 days
1974
22 days
1975
14 days
1976
25 days
1977
15 days
1978
19 days
1979
19 days
1980
22 days
1981
21 days
1982
16 days
1983
15 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
51 years with a frost
Across 51 years with a frost, the median last spring frost at Willis 5 SSW falls on 10 May and the median first autumn frost on 29 September, which leaves a median of 142 days between them.
Fitted over all years, the growing season changes by -5.0 days per decade at this station.
Frost dates and growing season at Willis 5 SSW
Measure
Median, all years
Earliest period
Recent period (1951 to 1981)
Recent against earliest
Fitted trend
Last spring frost
10 May
n/a
10 May
n/a
+1.5 days per decade
First autumn frost
29 September
n/a
24 September
n/a
-3.6 days per decade
Growing days
142 days
n/a
138 days
n/a
-5.0 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
37 years, 1945 to 1981
A day with at least 47.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 113.8 mm (4.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Willis 5 SSW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
47.1 mm (1.9 in)
5 years
60.5 mm (2.4 in)
10 years
70.9 mm (2.8 in)
25 years
86.2 mm (3.4 in)
50 years
99.2 mm (3.9 in)
Longer than the 37 years of record
100 years
113.8 mm (4.5 in)
Longer than the 37 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, 37 years of values from 1945 to 1981.
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: 96.8 mm (3.8 in) in 1972; 90.2 mm (3.6 in) in 1949; 81.3 mm (3.2 in) in 1955.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Willis 5 SSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Willis 5 SSW 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.