Record envelope, standing records and threshold days for Eagle Harbor (USC00202332), Michigan, United States, with 74 years of record.
Key Facts for Eagle Harbor
Eagle Harbor (USC00202332) is a weather station in Michigan, United States at 47.47 latitude and -88.17 longitude, 185 m (607 ft) above sea level.
The station reports from 1899 to 1972, 74 years of record.
1,464 records set at Eagle Harbor still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Eagle Harbor set a daily record low minimum temperature of -17.8 C (0.0 F) on 29 February 1972.
About the Station
Location: Michigan, United States, 47.47 latitude, -88.17 longitude.
Elevation: 185 m (607 ft).
Period of record: 1899 to 1972, 74 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 Eagle Harbor. 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 Eagle Harbor, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
10.6 C (51.1 F)
-32.2 C (-26.0 F)
n/a
n/a
Feb
17.2 C (63.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Mar
21.1 C (70.0 F)
-28.9 C (-20.0 F)
n/a
n/a
Apr
26.7 C (80.1 F)
-17.2 C (1.0 F)
n/a
n/a
May
32.8 C (91.0 F)
-10.6 C (12.9 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
37.8 C (100.0 F)
2.2 C (36.0 F)
n/a
n/a
Aug
36.7 C (98.1 F)
2.2 C (36.0 F)
n/a
n/a
Sep
32.8 C (91.0 F)
-1.1 C (30.0 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-16.7 C (1.9 F)
n/a
n/a
Dec
13.9 C (57.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Eagle Harbor still stand. 1926 holds the most, with 52.
Standing records at Eagle Harbor by the year they were set
Year set
Standing records
1899
21
1900
38
1901
25
1902
22
1903
25
1904
22
1905
39
1906
50
1907
32
1908
39
1909
21
1910
34
1911
25
1912
40
1913
31
1914
38
1915
44
1916
43
1917
42
1918
50
1919
20
1920
30
1921
36
1922
26
1923
42
1924
44
1925
40
1926
52
1927
15
1949
16
1950
9
1951
31
1952
24
1953
31
1954
25
1955
23
1956
17
1957
6
1958
30
1959
22
1960
13
1961
17
1962
20
1963
37
1964
29
1965
23
1966
31
1967
22
1968
21
1969
11
1970
14
1971
4
1972
2
All-Time Record Progression
3 new records
3 all-time records were set at Eagle Harbor between 1 September 1953 and 1 July 1966. Each dot is a new record.
When Eagle Harbor set new all-time records
Date
Kind
Detail
1953-09-01
Record high minimum temperature
Record high minimum temperature 25.0 C (77.0 F)
1965-02-12
Record daily snowfall
Record daily snowfall 50.8 cm (20.0 in)
1966-07-01
Record high minimum temperature
Record high minimum temperature 25.6 C (78.1 F)
Wettest Day of Each Month
Mar: 88.9 mm (3.5 in)
The wettest day on record for each calendar month at Eagle Harbor. The most was 88.9 mm (3.5 in) on 17 March 1917.
Record daily precipitation for each month at Eagle Harbor
Month
Record daily precipitation (mm)
Date
Jan
25.4 mm (1.0 in)
3 January 1927
Feb
38.1 mm (1.5 in)
10 February 1900
Mar
88.9 mm (3.5 in)
17 March 1917
Apr
63.5 mm (2.5 in)
23 April 1913
May
50.8 mm (2.0 in)
22 May 1927
Jun
61.0 mm (2.4 in)
13 June 1899
Jul
71.4 mm (2.8 in)
21 July 1960
Aug
66.0 mm (2.6 in)
10 August 1912
Sep
73.7 mm (2.9 in)
3 September 1905
Oct
41.4 mm (1.6 in)
13 October 1920
Nov
52.8 mm (2.1 in)
9 November 1950
Dec
31.8 mm (1.3 in)
7 December 1916
Period of Record Coverage
1899 to 1972
Complete yearUnder 90 percent of days
53 years of record at Eagle Harbor, 1899 to 1972. 12 years have data for under 90 percent of days and are left out of rankings: 1899, 1901, 1903, 1904, 1913, 1921, 1926, 1927 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Eagle Harbor, 1900 to 1969. Blue stripes are years cooler than the station's own mean of 4.8 C (40.7 F); red stripes are warmer. The coolest year was 1917, at 1.8 C (35.2 F), and the warmest was 1953, at 6.3 C (43.4 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Eagle Harbor as warming stripes, 1900 to 1969
Year
Annual mean temperature
Difference from the station mean
1900
5.4 C
+0.58 C
1905
4.1 C
-0.75 C
1906
5.0 C
+0.19 C
1907
3.5 C
-1.39 C
1908
5.8 C
+0.97 C
1910
5.4 C
+0.59 C
1911
5.5 C
+0.64 C
1912
3.4 C
-1.46 C
1914
4.9 C
+0.05 C
1915
4.5 C
-0.38 C
1916
3.6 C
-1.22 C
1917
1.8 C
-3.10 C
1918
4.0 C
-0.89 C
1919
5.3 C
+0.43 C
1922
5.5 C
+0.61 C
1923
3.8 C
-1.05 C
1924
2.4 C
-2.48 C
1925
3.1 C
-1.79 C
1951
4.4 C
-0.48 C
1952
6.1 C
+1.26 C
1953
6.3 C
+1.46 C
1954
5.4 C
+0.53 C
1955
6.2 C
+1.34 C
1956
5.2 C
+0.34 C
1957
5.0 C
+0.16 C
1958
5.4 C
+0.50 C
1960
5.1 C
+0.27 C
1961
5.9 C
+1.07 C
1962
4.8 C
-0.02 C
1963
5.2 C
+0.36 C
1964
5.9 C
+1.07 C
1965
4.6 C
-0.28 C
1966
5.6 C
+0.76 C
1967
5.1 C
+0.25 C
1968
5.7 C
+0.85 C
1969
5.7 C
+0.87 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1900 to 1969. In Fahrenheit: 0.4 F (0.1 to 0.6) 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 Eagle Harbor
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.4 F (0.1 to 0.6) per decade
1900 to 1969
36
Rise
Mean daily maximum
0.18 C (0.02 to 0.33) per decade
0.32 F (0.04 to 0.60) per decade
1900 to 1969
36
Rise
Mean daily minimum
0.2 C (0.1 to 0.4) per decade
0.4 F (0.2 to 0.6) per decade
1900 to 1969
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
1899 to 1972
Yearly extremes at Eagle Harbor: 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)
1901
31.7 C (89.1 F)
53
Coldest night (TNn)
-32.2 C (-26.0 F)
1927
-23.3 C (-9.9 F)
53
Wettest day (Rx1day)
88.9 mm (3.5 in)
1917
43.2 mm (1.7 in)
55
Wettest five days (Rx5day)
110.0 mm (4.3 in)
1955
62.3 mm (2.5 in)
55
Longest dry spell (CDD)
42 days
1969
20 days
55
Hottest day (TXx)
The hottest day of the year at Eagle Harbor, 1899 to 1972. The record is 37.8 C (100.0 F) in 1901, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Eagle Harbor by year
Year
Hottest day (TXx)
1899
29.4 C (84.9 F)
1900
35.0 C (95.0 F)
1901
37.8 C (100.0 F)
1902
29.4 C (84.9 F)
1903
34.4 C (93.9 F)
1904
32.2 C (90.0 F)
1905
31.7 C (89.1 F)
1906
31.1 C (88.0 F)
1907
30.6 C (87.1 F)
1908
32.2 C (90.0 F)
1909
31.7 C (89.1 F)
1910
34.4 C (93.9 F)
1911
35.6 C (96.1 F)
1912
29.4 C (84.9 F)
1913
33.3 C (91.9 F)
1914
33.3 C (91.9 F)
1915
26.7 C (80.1 F)
1916
36.7 C (98.1 F)
1917
32.8 C (91.0 F)
1918
30.6 C (87.1 F)
1919
32.2 C (90.0 F)
1920
31.1 C (88.0 F)
1921
33.3 C (91.9 F)
1922
34.4 C (93.9 F)
1923
32.8 C (91.0 F)
1924
31.1 C (88.0 F)
1925
33.3 C (91.9 F)
1926
26.7 C (80.1 F)
1927
33.3 C (91.9 F)
1947
n/a
1948
n/a
1949
30.6 C (87.1 F)
1950
28.3 C (82.9 F)
1951
29.4 C (84.9 F)
1952
32.2 C (90.0 F)
1953
33.3 C (91.9 F)
1954
30.0 C (86.0 F)
1955
31.1 C (88.0 F)
1956
30.6 C (87.1 F)
1957
31.7 C (89.1 F)
1958
30.6 C (87.1 F)
1959
31.1 C (88.0 F)
1960
32.2 C (90.0 F)
1961
32.2 C (90.0 F)
1962
32.2 C (90.0 F)
1963
31.1 C (88.0 F)
1964
32.2 C (90.0 F)
1965
30.0 C (86.0 F)
1966
32.2 C (90.0 F)
1967
28.3 C (82.9 F)
1968
32.2 C (90.0 F)
1969
32.2 C (90.0 F)
1970
31.1 C (88.0 F)
1971
28.3 C (82.9 F)
1972
-3.3 C (26.1 F)
Coldest night (TNn)
The coldest night of the year at Eagle Harbor, 1899 to 1972. The record is -32.2 C (-26.0 F) in 1927, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at Eagle Harbor by year
Year
Coldest night (TNn)
1899
-18.3 C (-0.9 F)
1900
-25.0 C (-13.0 F)
1901
-23.3 C (-9.9 F)
1902
-22.2 C (-8.0 F)
1903
-26.1 C (-15.0 F)
1904
-13.3 C (8.1 F)
1905
-26.1 C (-15.0 F)
1906
-21.1 C (-6.0 F)
1907
-23.9 C (-11.0 F)
1908
-22.8 C (-9.0 F)
1909
-18.9 C (-2.0 F)
1910
-21.1 C (-6.0 F)
1911
-20.6 C (-5.1 F)
1912
-28.3 C (-18.9 F)
1913
-10.6 C (12.9 F)
1914
-27.2 C (-17.0 F)
1915
-25.0 C (-13.0 F)
1916
-27.8 C (-18.0 F)
1917
-27.8 C (-18.0 F)
1918
-30.6 C (-23.1 F)
1919
-21.1 C (-6.0 F)
1920
-23.3 C (-9.9 F)
1921
-15.0 C (5.0 F)
1922
-22.2 C (-8.0 F)
1923
-26.7 C (-16.1 F)
1924
-26.1 C (-15.0 F)
1925
-25.6 C (-14.1 F)
1926
-26.7 C (-16.1 F)
1927
-32.2 C (-26.0 F)
1947
n/a
1948
n/a
1949
-15.6 C (3.9 F)
1950
-26.1 C (-15.0 F)
1951
-26.1 C (-15.0 F)
1952
-19.4 C (-2.9 F)
1953
-23.9 C (-11.0 F)
1954
-20.0 C (-4.0 F)
1955
-17.2 C (1.0 F)
1956
-17.2 C (1.0 F)
1957
-20.6 C (-5.1 F)
1958
-22.8 C (-9.0 F)
1959
-22.8 C (-9.0 F)
1960
-21.7 C (-7.1 F)
1961
-19.4 C (-2.9 F)
1962
-23.9 C (-11.0 F)
1963
-24.4 C (-11.9 F)
1964
-17.2 C (1.0 F)
1965
-24.4 C (-11.9 F)
1966
-26.1 C (-15.0 F)
1967
-30.0 C (-22.0 F)
1968
-26.1 C (-15.0 F)
1969
-17.8 C (0.0 F)
1970
-16.7 C (1.9 F)
1971
-23.3 C (-9.9 F)
1972
-23.3 C (-9.9 F)
Wettest day (Rx1day)
The wettest day of the year at Eagle Harbor, 1899 to 1972. The record is 88.9 mm (3.5 in) in 1917, marked on the chart; the median year is 43.2 mm (1.7 in).
Wettest day (Rx1day) at Eagle Harbor by year
Year
Wettest day (Rx1day)
1899
61.0 mm (2.4 in)
1900
58.4 mm (2.3 in)
1901
38.1 mm (1.5 in)
1902
51.6 mm (2.0 in)
1903
40.6 mm (1.6 in)
1904
31.8 mm (1.3 in)
1905
73.7 mm (2.9 in)
1906
58.9 mm (2.3 in)
1907
35.6 mm (1.4 in)
1908
48.3 mm (1.9 in)
1909
36.8 mm (1.4 in)
1910
43.2 mm (1.7 in)
1911
55.9 mm (2.2 in)
1912
66.0 mm (2.6 in)
1913
63.5 mm (2.5 in)
1914
45.7 mm (1.8 in)
1915
48.3 mm (1.9 in)
1916
50.8 mm (2.0 in)
1917
88.9 mm (3.5 in)
1918
42.2 mm (1.7 in)
1919
50.8 mm (2.0 in)
1920
41.4 mm (1.6 in)
1921
48.3 mm (1.9 in)
1922
51.6 mm (2.0 in)
1923
43.2 mm (1.7 in)
1924
38.1 mm (1.5 in)
1925
25.4 mm (1.0 in)
1926
48.3 mm (1.9 in)
1927
50.8 mm (2.0 in)
1947
26.2 mm (1.0 in)
1948
39.6 mm (1.6 in)
1949
33.0 mm (1.3 in)
1950
52.8 mm (2.1 in)
1951
28.7 mm (1.1 in)
1952
26.9 mm (1.1 in)
1953
35.6 mm (1.4 in)
1954
27.9 mm (1.1 in)
1955
80.0 mm (3.1 in)
1956
43.2 mm (1.7 in)
1957
25.9 mm (1.0 in)
1958
47.0 mm (1.9 in)
1959
63.0 mm (2.5 in)
1960
71.4 mm (2.8 in)
1961
29.2 mm (1.1 in)
1962
22.9 mm (0.9 in)
1963
58.4 mm (2.3 in)
1964
45.5 mm (1.8 in)
1965
51.8 mm (2.0 in)
1966
27.2 mm (1.1 in)
1967
24.1 mm (0.9 in)
1968
50.8 mm (2.0 in)
1969
30.5 mm (1.2 in)
1970
30.5 mm (1.2 in)
1971
14.2 mm (0.6 in)
1972
8.9 mm (0.35 in)
Wettest five days (Rx5day)
The wettest five days of the year at Eagle Harbor, 1899 to 1972. The record is 110.0 mm (4.3 in) in 1955, marked on the chart; the median year is 62.3 mm (2.5 in).
Wettest five days (Rx5day) at Eagle Harbor by year
Year
Wettest five days (Rx5day)
1899
87.6 mm (3.4 in)
1900
88.9 mm (3.5 in)
1901
52.1 mm (2.1 in)
1902
59.7 mm (2.4 in)
1903
60.5 mm (2.4 in)
1904
52.1 mm (2.1 in)
1905
75.2 mm (3.0 in)
1906
73.7 mm (2.9 in)
1907
68.6 mm (2.7 in)
1908
86.4 mm (3.4 in)
1909
58.5 mm (2.3 in)
1910
54.9 mm (2.2 in)
1911
60.2 mm (2.4 in)
1912
74.7 mm (2.9 in)
1913
83.8 mm (3.3 in)
1914
61.8 mm (2.4 in)
1915
88.9 mm (3.5 in)
1916
64.2 mm (2.5 in)
1917
96.0 mm (3.8 in)
1918
55.4 mm (2.2 in)
1919
45.2 mm (1.8 in)
1920
49.0 mm (1.9 in)
1921
80.0 mm (3.1 in)
1922
67.3 mm (2.6 in)
1923
55.9 mm (2.2 in)
1924
63.5 mm (2.5 in)
1925
45.7 mm (1.8 in)
1926
85.1 mm (3.4 in)
1927
76.2 mm (3.0 in)
1947
68.8 mm (2.7 in)
1948
74.4 mm (2.9 in)
1949
73.6 mm (2.9 in)
1950
70.4 mm (2.8 in)
1951
53.3 mm (2.1 in)
1952
59.5 mm (2.3 in)
1953
64.3 mm (2.5 in)
1954
52.3 mm (2.1 in)
1955
110.0 mm (4.3 in)
1956
50.0 mm (2.0 in)
1957
39.1 mm (1.5 in)
1958
75.7 mm (3.0 in)
1959
101.9 mm (4.0 in)
1960
102.9 mm (4.1 in)
1961
60.7 mm (2.4 in)
1962
44.5 mm (1.8 in)
1963
89.4 mm (3.5 in)
1964
57.2 mm (2.3 in)
1965
55.6 mm (2.2 in)
1966
53.3 mm (2.1 in)
1967
38.1 mm (1.5 in)
1968
104.2 mm (4.1 in)
1969
58.4 mm (2.3 in)
1970
62.3 mm (2.5 in)
1971
31.8 mm (1.3 in)
1972
22.9 mm (0.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Eagle Harbor, 1899 to 1972. The record is 42 days in 1969, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Eagle Harbor by year
Year
Longest dry spell (CDD)
1899
14 days
1900
16 days
1901
23 days
1902
19 days
1903
22 days
1904
14 days
1905
12 days
1906
14 days
1907
16 days
1908
14 days
1909
20 days
1910
37 days
1911
24 days
1912
28 days
1913
32 days
1914
15 days
1915
22 days
1916
18 days
1917
25 days
1918
32 days
1919
19 days
1920
20 days
1921
15 days
1922
14 days
1923
24 days
1924
20 days
1925
22 days
1926
18 days
1927
21 days
1947
25 days
1948
23 days
1949
32 days
1950
13 days
1951
16 days
1952
15 days
1953
35 days
1954
18 days
1955
17 days
1956
24 days
1957
19 days
1958
31 days
1959
18 days
1960
32 days
1961
18 days
1962
15 days
1963
21 days
1964
11 days
1965
21 days
1966
21 days
1967
31 days
1968
18 days
1969
42 days
1970
22 days
1971
13 days
1972
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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Eagle Harbor falls on 21 May and the median first autumn frost on 9 October, which leaves a median of 142 days between them.
Fitted over all years, the growing season changes by +0.8 days per decade at this station.
Frost dates and growing season at Eagle Harbor
Measure
Median, all years
Earliest period
Recent period (1911 to 1969)
Recent against earliest
Fitted trend
Last spring frost
21 May
n/a
21 May
n/a
+0.3 days per decade
First autumn frost
9 October
n/a
12 October
n/a
+1.1 days per decade
Growing days
142 days
n/a
147 days
n/a
+0.8 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
35 years, 1900 to 1969
A day with at least 45.2 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 94.6 mm (3.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Eagle Harbor: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
45.2 mm (1.8 in)
5 years
60.7 mm (2.4 in)
10 years
69.9 mm (2.8 in)
25 years
80.7 mm (3.2 in)
50 years
87.9 mm (3.5 in)
Longer than the 35 years of record
100 years
94.6 mm (3.7 in)
Longer than the 35 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, 35 years of values from 1900 to 1969.
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: 88.9 mm (3.5 in) in 1917; 80.0 mm (3.1 in) in 1955; 73.7 mm (2.9 in) in 1905.
Download the Data
Data for Eagle Harbor standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Eagle Harbor 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.