Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Caledonia. 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 Caledonia, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.7 C (62.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
16.1 C (61.0 F)
-36.7 C (-34.1 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-24.4 C (-11.9 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-13.3 C (8.1 F)
n/a
n/a
May
34.4 C (93.9 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
35.6 C (96.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
3.3 C (37.9 F)
n/a
n/a
Aug
37.2 C (99.0 F)
1.1 C (34.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-3.3 C (26.1 F)
n/a
n/a
Oct
30.6 C (87.1 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Dec
18.3 C (64.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Caledonia still stand. 1945 holds the most, with 77.
Standing records at Caledonia by the year they were set
Year set
Standing records
1931
43
1932
40
1933
51
1934
70
1935
34
1936
67
1937
27
1938
42
1939
30
1940
59
1941
38
1942
51
1943
38
1944
43
1945
77
1946
49
1947
36
1948
39
1949
52
1950
43
1951
28
1952
32
1953
38
1954
44
1955
40
1956
31
1957
37
1958
29
1959
45
1960
26
1961
20
1962
33
1963
30
1964
46
1965
36
1966
20
Wettest Day of Each Month
Oct: 104.1 mm (4.1 in)
The wettest day on record for each calendar month at Caledonia. The most was 104.1 mm (4.1 in) on 15 October 1954.
Record daily precipitation for each month at Caledonia
Month
Record daily precipitation (mm)
Date
Jan
39.6 mm (1.6 in)
1 January 1932
Feb
41.1 mm (1.6 in)
16 February 1954
Mar
41.1 mm (1.6 in)
26 March 1934
Apr
39.1 mm (1.5 in)
25 April 1937
May
65.0 mm (2.6 in)
15 May 1942
Jun
60.7 mm (2.4 in)
17 June 1945
Jul
54.6 mm (2.1 in)
23 July 1962
Aug
86.6 mm (3.4 in)
6 August 1937
Sep
70.4 mm (2.8 in)
20 September 1931
Oct
104.1 mm (4.1 in)
15 October 1954
Nov
49.8 mm (2.0 in)
9 November 1962
Dec
48.3 mm (1.9 in)
20 December 1949
Period of Record Coverage
1931 to 1966
Complete yearUnder 90 percent of days
36 years of record at Caledonia, 1931 to 1966. 12 years have data for under 90 percent of days and are left out of rankings: 1932, 1933, 1934, 1935, 1936, 1937, 1938, 1939 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Caledonia, 1933 to 1964. Blue stripes are years cooler than the station's own mean of 7.8 C (46.1 F); red stripes are warmer. The coolest year was 1940, at 6.1 C (42.9 F), and the warmest was 1953, at 9.2 C (48.5 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Caledonia as warming stripes, 1933 to 1964
Year
Annual mean temperature
Difference from the station mean
1933
8.0 C
+0.21 C
1934
6.8 C
-0.98 C
1936
7.1 C
-0.73 C
1937
7.6 C
-0.25 C
1938
8.1 C
+0.24 C
1939
7.5 C
-0.31 C
1940
6.1 C
-1.73 C
1941
8.2 C
+0.43 C
1942
7.3 C
-0.47 C
1943
6.5 C
-1.35 C
1944
7.4 C
-0.46 C
1945
6.5 C
-1.27 C
1946
8.5 C
+0.71 C
1947
8.0 C
+0.17 C
1948
8.0 C
+0.17 C
1949
9.2 C
+1.36 C
1950
7.2 C
-0.59 C
1951
7.9 C
+0.12 C
1952
8.7 C
+0.84 C
1953
9.2 C
+1.36 C
1954
7.9 C
+0.07 C
1955
8.7 C
+0.84 C
1956
7.7 C
-0.15 C
1957
8.1 C
+0.31 C
1958
7.5 C
-0.28 C
1959
8.6 C
+0.82 C
1960
7.7 C
-0.07 C
1961
8.3 C
+0.45 C
1962
7.9 C
+0.09 C
1964
8.4 C
+0.55 C
The annual mean temperature here has risen by 0.4 C (0.1 to 0.7) per decade over 1933 to 1964. In Fahrenheit: 0.7 F (0.1 to 1.2) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Caledonia
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.1 to 0.7) per decade
0.7 F (0.1 to 1.2) per decade
1933 to 1964
30
Rise
Mean daily maximum
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.4 to 0.8) per decade
1933 to 1964
30
Not clearly different from zero
Mean daily minimum
0.6 C (0.3 to 1.0) per decade
1.1 F (0.6 to 1.7) per decade
1933 to 1964
30
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
1931 to 1966
Yearly extremes at Caledonia: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
1936
34.2 C (93.5 F)
36
Coldest night (TNn)
-36.7 C (-34.1 F)
1934
-24.1 C (-11.5 F)
36
Wettest day (Rx1day)
104.1 mm (4.1 in)
1954
47.4 mm (1.9 in)
36
Wettest five days (Rx5day)
137.9 mm (5.4 in)
1954
64.7 mm (2.5 in)
36
Longest dry spell (CDD)
33 days
1958
17 days
36
Hottest day (TXx)
The hottest day of the year at Caledonia, 1931 to 1966. The record is 39.4 C (102.9 F) in 1936, marked on the chart; the median year is 34.2 C (93.5 F).
Hottest day (TXx) at Caledonia by year
Year
Hottest day (TXx)
1931
37.8 C (100.0 F)
1932
34.4 C (93.9 F)
1933
36.7 C (98.1 F)
1934
36.1 C (97.0 F)
1935
34.4 C (93.9 F)
1936
39.4 C (102.9 F)
1937
32.8 C (91.0 F)
1938
32.2 C (90.0 F)
1939
34.4 C (93.9 F)
1940
33.3 C (91.9 F)
1941
36.7 C (98.1 F)
1942
33.9 C (93.0 F)
1943
33.9 C (93.0 F)
1944
35.6 C (96.1 F)
1945
33.3 C (91.9 F)
1946
33.3 C (91.9 F)
1947
34.4 C (93.9 F)
1948
37.2 C (99.0 F)
1949
36.7 C (98.1 F)
1950
32.2 C (90.0 F)
1951
33.3 C (91.9 F)
1952
34.4 C (93.9 F)
1953
36.7 C (98.1 F)
1954
33.9 C (93.0 F)
1955
37.8 C (100.0 F)
1956
33.9 C (93.0 F)
1957
33.3 C (91.9 F)
1958
32.2 C (90.0 F)
1959
33.9 C (93.0 F)
1960
32.2 C (90.0 F)
1961
33.3 C (91.9 F)
1962
34.4 C (93.9 F)
1963
33.9 C (93.0 F)
1964
35.0 C (95.0 F)
1965
31.7 C (89.1 F)
1966
34.4 C (93.9 F)
Coldest night (TNn)
The coldest night of the year at Caledonia, 1931 to 1966. The record is -36.7 C (-34.1 F) in 1934, marked on the chart; the median year is -24.1 C (-11.5 F).
Coldest night (TNn) at Caledonia by year
Year
Coldest night (TNn)
1931
-22.8 C (-9.0 F)
1932
-17.8 C (0.0 F)
1933
-27.8 C (-18.0 F)
1934
-36.7 C (-34.1 F)
1935
-26.7 C (-16.1 F)
1936
-22.8 C (-9.0 F)
1937
-20.6 C (-5.1 F)
1938
-21.1 C (-6.0 F)
1939
-23.9 C (-11.0 F)
1940
-26.1 C (-15.0 F)
1941
-22.2 C (-8.0 F)
1942
-29.4 C (-20.9 F)
1943
-28.3 C (-18.9 F)
1944
-29.4 C (-20.9 F)
1945
-31.7 C (-25.1 F)
1946
-20.6 C (-5.1 F)
1947
-17.8 C (0.0 F)
1948
-26.1 C (-15.0 F)
1949
-18.9 C (-2.0 F)
1950
-24.4 C (-11.9 F)
1951
-21.7 C (-7.1 F)
1952
-19.4 C (-2.9 F)
1953
-20.0 C (-4.0 F)
1954
-22.8 C (-9.0 F)
1955
-27.8 C (-18.0 F)
1956
-19.4 C (-2.9 F)
1957
-23.9 C (-11.0 F)
1958
-22.2 C (-8.0 F)
1959
-24.4 C (-11.9 F)
1960
-26.1 C (-15.0 F)
1961
-25.0 C (-13.0 F)
1962
-26.1 C (-15.0 F)
1963
-24.4 C (-11.9 F)
1964
-22.2 C (-8.0 F)
1965
-26.7 C (-16.1 F)
1966
-24.4 C (-11.9 F)
Wettest day (Rx1day)
The wettest day of the year at Caledonia, 1931 to 1966. The record is 104.1 mm (4.1 in) in 1954, marked on the chart; the median year is 47.4 mm (1.9 in).
Wettest day (Rx1day) at Caledonia by year
Year
Wettest day (Rx1day)
1931
70.4 mm (2.8 in)
1932
39.6 mm (1.6 in)
1933
41.1 mm (1.6 in)
1934
54.4 mm (2.1 in)
1935
47.5 mm (1.9 in)
1936
36.3 mm (1.4 in)
1937
86.6 mm (3.4 in)
1938
32.0 mm (1.3 in)
1939
34.0 mm (1.3 in)
1940
41.9 mm (1.6 in)
1941
55.4 mm (2.2 in)
1942
65.0 mm (2.6 in)
1943
39.1 mm (1.5 in)
1944
31.8 mm (1.3 in)
1945
60.7 mm (2.4 in)
1946
27.7 mm (1.1 in)
1947
63.0 mm (2.5 in)
1948
53.3 mm (2.1 in)
1949
48.3 mm (1.9 in)
1950
34.3 mm (1.4 in)
1951
48.0 mm (1.9 in)
1952
37.3 mm (1.5 in)
1953
52.3 mm (2.1 in)
1954
104.1 mm (4.1 in)
1955
55.4 mm (2.2 in)
1956
48.0 mm (1.9 in)
1957
47.2 mm (1.9 in)
1958
34.0 mm (1.3 in)
1959
34.3 mm (1.4 in)
1960
40.1 mm (1.6 in)
1961
36.6 mm (1.4 in)
1962
54.6 mm (2.1 in)
1963
50.8 mm (2.0 in)
1964
53.8 mm (2.1 in)
1965
41.7 mm (1.6 in)
1966
26.7 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Caledonia, 1931 to 1966. The record is 137.9 mm (5.4 in) in 1954, marked on the chart; the median year is 64.7 mm (2.5 in).
Wettest five days (Rx5day) at Caledonia by year
Year
Wettest five days (Rx5day)
1931
70.4 mm (2.8 in)
1932
39.9 mm (1.6 in)
1933
63.2 mm (2.5 in)
1934
99.4 mm (3.9 in)
1935
52.6 mm (2.1 in)
1936
47.8 mm (1.9 in)
1937
135.3 mm (5.3 in)
1938
45.7 mm (1.8 in)
1939
50.3 mm (2.0 in)
1940
55.4 mm (2.2 in)
1941
55.7 mm (2.2 in)
1942
85.1 mm (3.4 in)
1943
56.4 mm (2.2 in)
1944
52.4 mm (2.1 in)
1945
89.6 mm (3.5 in)
1946
43.2 mm (1.7 in)
1947
89.2 mm (3.5 in)
1948
68.2 mm (2.7 in)
1949
54.7 mm (2.2 in)
1950
63.0 mm (2.5 in)
1951
66.1 mm (2.6 in)
1952
54.8 mm (2.2 in)
1953
77.2 mm (3.0 in)
1954
137.9 mm (5.4 in)
1955
71.5 mm (2.8 in)
1956
81.2 mm (3.2 in)
1957
84.3 mm (3.3 in)
1958
49.8 mm (2.0 in)
1959
79.0 mm (3.1 in)
1960
77.4 mm (3.0 in)
1961
64.5 mm (2.5 in)
1962
73.9 mm (2.9 in)
1963
64.8 mm (2.6 in)
1964
77.9 mm (3.1 in)
1965
54.9 mm (2.2 in)
1966
41.9 mm (1.6 in)
Longest dry spell (CDD)
The longest dry spell of the year at Caledonia, 1931 to 1966. The record is 33 days in 1958, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Caledonia by year
Year
Longest dry spell (CDD)
1931
15 days
1932
16 days
1933
17 days
1934
26 days
1935
17 days
1936
18 days
1937
16 days
1938
13 days
1939
20 days
1940
11 days
1941
19 days
1942
22 days
1943
27 days
1944
19 days
1945
13 days
1946
17 days
1947
18 days
1948
15 days
1949
22 days
1950
17 days
1951
12 days
1952
17 days
1953
14 days
1954
16 days
1955
14 days
1956
26 days
1957
22 days
1958
33 days
1959
15 days
1960
14 days
1961
22 days
1962
15 days
1963
31 days
1964
26 days
1965
17 days
1966
25 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Caledonia falls on 13 May and the median first autumn frost on 2 October, which leaves a median of 144 days between them.
Fitted over all years, the growing season changes by +1.8 days per decade at this station.
Frost dates and growing season at Caledonia
Measure
Median, all years
Earliest period
Recent period (1933 to 1964)
Recent against earliest
Fitted trend
Last spring frost
13 May
n/a
13 May
n/a
-0.6 days per decade
First autumn frost
2 October
n/a
2 October
n/a
+1.2 days per decade
Growing days
144 days
n/a
144 days
n/a
+1.8 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
33 years, 1931 to 1965
A day with at least 44.9 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 108.8 mm (4.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Caledonia: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
44.9 mm (1.8 in)
5 years
58.6 mm (2.3 in)
10 years
68.9 mm (2.7 in)
25 years
83.5 mm (3.3 in)
50 years
95.6 mm (3.8 in)
Longer than the 33 years of record
100 years
108.8 mm (4.3 in)
Longer than the 33 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, 33 years of values from 1931 to 1965.
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: 104.1 mm (4.1 in) in 1954; 86.6 mm (3.4 in) in 1937; 70.4 mm (2.8 in) in 1931.
Download the Data
Data for Caledonia standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Caledonia 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.