Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Killaloe. 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 Killaloe, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.1 C (61.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
12.2 C (54.0 F)
-41.1 C (-42.0 F)
n/a
n/a
Mar
26.1 C (79.0 F)
-39.4 C (-38.9 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-25.0 C (-13.0 F)
n/a
n/a
May
33.3 C (91.9 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
35.0 C (95.0 F)
-3.9 C (25.0 F)
n/a
n/a
Jul
35.0 C (95.0 F)
0.0 C (32.0 F)
n/a
n/a
Aug
36.7 C (98.1 F)
-1.7 C (28.9 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-14.4 C (6.1 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-28.3 C (-18.9 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-40.6 C (-41.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Killaloe still stand. 1940 holds the most, with 66.
Standing records at Killaloe by the year they were set
Year set
Standing records
1938
13
1939
48
1940
66
1941
42
1942
44
1943
51
1944
36
1945
55
1946
62
1947
57
1948
38
1949
63
1950
51
1951
40
1952
29
1953
56
1954
30
1955
47
1956
34
1957
55
1958
32
1959
43
1960
28
1961
25
1962
44
1963
36
1964
39
1965
56
1966
40
1967
31
1968
46
1969
24
1970
32
1971
34
1972
37
Wettest Day of Each Month
Aug: 62.0 mm (2.4 in)
The wettest day on record for each calendar month at Killaloe. The most was 62.0 mm (2.4 in) on 28 August 1967.
Record daily precipitation for each month at Killaloe
Month
Record daily precipitation (mm)
Date
Jan
31.8 mm (1.3 in)
27 January 1967
Feb
51.3 mm (2.0 in)
19 February 1960
Mar
29.7 mm (1.2 in)
24 March 1966
Apr
34.5 mm (1.4 in)
23 April 1969
May
44.7 mm (1.8 in)
13 May 1956
Jun
57.4 mm (2.3 in)
21 June 1972
Jul
58.4 mm (2.3 in)
20 July 1970
Aug
62.0 mm (2.4 in)
28 August 1967
Sep
61.7 mm (2.4 in)
28 September 1967
Oct
52.1 mm (2.1 in)
12 October 1946
Nov
42.2 mm (1.7 in)
10 November 1962
Dec
31.8 mm (1.3 in)
12 December 1944
Period of Record Coverage
1938 to 1972
Complete yearUnder 90 percent of days
35 years of record at Killaloe, 1938 to 1972. 1 years have data for under 90 percent of days and are left out of rankings: 1938.
Cooler than the station meanWarmer than the station mean
One stripe for each of 33 complete years at Killaloe, 1939 to 1971. Blue stripes are years cooler than the station's own mean of 4.5 C (40.1 F); red stripes are warmer. The coolest year was 1970, at 3.2 C (37.8 F), and the warmest was 1953, at 6.6 C (43.9 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Killaloe as warming stripes, 1939 to 1971
Year
Annual mean temperature
Difference from the station mean
1939
4.0 C
-0.48 C
1940
3.3 C
-1.25 C
1941
4.7 C
+0.15 C
1942
5.0 C
+0.45 C
1943
3.7 C
-0.85 C
1944
5.1 C
+0.61 C
1945
4.8 C
+0.28 C
1946
5.2 C
+0.71 C
1947
4.8 C
+0.27 C
1948
5.2 C
+0.65 C
1949
5.7 C
+1.14 C
1950
4.5 C
-0.01 C
1951
4.8 C
+0.30 C
1952
5.8 C
+1.27 C
1953
6.6 C
+2.10 C
1954
4.9 C
+0.41 C
1955
5.2 C
+0.71 C
1956
4.2 C
-0.33 C
1957
5.3 C
+0.81 C
1958
4.3 C
-0.19 C
1959
4.7 C
+0.16 C
1960
4.6 C
+0.11 C
1961
4.6 C
+0.07 C
1962
3.4 C
-1.10 C
1963
3.5 C
-1.04 C
1964
4.8 C
+0.27 C
1965
3.4 C
-1.15 C
1966
4.3 C
-0.27 C
1967
3.7 C
-0.78 C
1968
4.0 C
-0.53 C
1969
4.3 C
-0.27 C
1970
3.2 C
-1.29 C
1971
3.7 C
-0.86 C
The annual mean temperature here has fallen by 0.30 C (0.02 to 0.58) per decade over 1939 to 1971. In Fahrenheit: 0.54 F (0.03 to 1.04) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Killaloe
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.30 C (-0.58 to -0.02) per decade
-0.54 F (-1.04 to -0.03) per decade
1939 to 1971
33
Fall
Mean daily maximum
-0.1 C (-0.4 to 0.2) per decade
-0.2 F (-0.6 to 0.3) per decade
1939 to 1971
33
Not clearly different from zero
Mean daily minimum
-0.5 C (-0.9 to -0.1) per decade
-0.9 F (-1.5 to -0.2) per decade
1939 to 1971
33
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
1938 to 1972
Yearly extremes at Killaloe: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.7 C (98.1 F)
1944
33.3 C (91.9 F)
35
Coldest night (TNn)
-41.1 C (-42.0 F)
1962
-37.8 C (-36.0 F)
35
Wettest day (Rx1day)
62.0 mm (2.4 in)
1967
38.4 mm (1.5 in)
35
Wettest five days (Rx5day)
100.7 mm (4.0 in)
1967
59.5 mm (2.3 in)
35
Longest dry spell (CDD)
41 days
1961
18 days
35
Hottest day (TXx)
The hottest day of the year at Killaloe, 1938 to 1972. The record is 36.7 C (98.1 F) in 1944, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Killaloe by year
Year
Hottest day (TXx)
1938
29.4 C (84.9 F)
1939
34.4 C (93.9 F)
1940
32.2 C (90.0 F)
1941
34.4 C (93.9 F)
1942
33.9 C (93.0 F)
1943
31.7 C (89.1 F)
1944
36.7 C (98.1 F)
1945
32.2 C (90.0 F)
1946
33.3 C (91.9 F)
1947
33.3 C (91.9 F)
1948
34.4 C (93.9 F)
1949
36.1 C (97.0 F)
1950
31.7 C (89.1 F)
1951
30.6 C (87.1 F)
1952
32.8 C (91.0 F)
1953
34.4 C (93.9 F)
1954
29.4 C (84.9 F)
1955
35.6 C (96.1 F)
1956
33.9 C (93.0 F)
1957
33.3 C (91.9 F)
1958
33.3 C (91.9 F)
1959
33.9 C (93.0 F)
1960
34.4 C (93.9 F)
1961
32.2 C (90.0 F)
1962
33.9 C (93.0 F)
1963
34.4 C (93.9 F)
1964
33.9 C (93.0 F)
1965
32.8 C (91.0 F)
1966
35.0 C (95.0 F)
1967
30.6 C (87.1 F)
1968
33.3 C (91.9 F)
1969
32.8 C (91.0 F)
1970
31.1 C (88.0 F)
1971
32.8 C (91.0 F)
1972
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Killaloe, 1938 to 1972. The record is -41.1 C (-42.0 F) in 1962, marked on the chart; the median year is -37.8 C (-36.0 F).
Coldest night (TNn) at Killaloe by year
Year
Coldest night (TNn)
1938
-25.6 C (-14.1 F)
1939
-36.1 C (-33.0 F)
1940
-35.0 C (-31.0 F)
1941
-35.6 C (-32.1 F)
1942
-40.6 C (-41.1 F)
1943
-38.3 C (-36.9 F)
1944
-35.6 C (-32.1 F)
1945
-40.0 C (-40.0 F)
1946
-37.8 C (-36.0 F)
1947
-40.0 C (-40.0 F)
1948
-37.2 C (-35.0 F)
1949
-31.1 C (-24.0 F)
1950
-39.4 C (-38.9 F)
1951
-40.6 C (-41.1 F)
1952
-38.3 C (-36.9 F)
1953
-26.7 C (-16.1 F)
1954
-37.8 C (-36.0 F)
1955
-36.7 C (-34.1 F)
1956
-27.8 C (-18.0 F)
1957
-38.9 C (-38.0 F)
1958
-37.8 C (-36.0 F)
1959
-36.7 C (-34.1 F)
1960
-32.2 C (-26.0 F)
1961
-36.7 C (-34.1 F)
1962
-41.1 C (-42.0 F)
1963
-37.2 C (-35.0 F)
1964
-29.4 C (-20.9 F)
1965
-37.8 C (-36.0 F)
1966
-37.8 C (-36.0 F)
1967
-38.3 C (-36.9 F)
1968
-38.9 C (-38.0 F)
1969
-34.4 C (-29.9 F)
1970
-40.0 C (-40.0 F)
1971
-40.0 C (-40.0 F)
1972
-37.2 C (-35.0 F)
Wettest day (Rx1day)
The wettest day of the year at Killaloe, 1938 to 1972. The record is 62.0 mm (2.4 in) in 1967, marked on the chart; the median year is 38.4 mm (1.5 in).
Wettest day (Rx1day) at Killaloe by year
Year
Wettest day (Rx1day)
1938
56.1 mm (2.2 in)
1939
50.8 mm (2.0 in)
1940
38.1 mm (1.5 in)
1941
32.5 mm (1.3 in)
1942
37.1 mm (1.5 in)
1943
27.4 mm (1.1 in)
1944
45.2 mm (1.8 in)
1945
50.0 mm (2.0 in)
1946
52.1 mm (2.1 in)
1947
41.9 mm (1.6 in)
1948
49.5 mm (1.9 in)
1949
25.4 mm (1.0 in)
1950
38.4 mm (1.5 in)
1951
25.9 mm (1.0 in)
1952
33.5 mm (1.3 in)
1953
41.4 mm (1.6 in)
1954
28.2 mm (1.1 in)
1955
36.3 mm (1.4 in)
1956
44.7 mm (1.8 in)
1957
43.4 mm (1.7 in)
1958
32.5 mm (1.3 in)
1959
49.3 mm (1.9 in)
1960
51.3 mm (2.0 in)
1961
31.5 mm (1.2 in)
1962
42.2 mm (1.7 in)
1963
37.8 mm (1.5 in)
1964
24.6 mm (1.0 in)
1965
23.4 mm (0.9 in)
1966
34.0 mm (1.3 in)
1967
62.0 mm (2.4 in)
1968
31.0 mm (1.2 in)
1969
39.9 mm (1.6 in)
1970
58.4 mm (2.3 in)
1971
34.8 mm (1.4 in)
1972
57.4 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Killaloe, 1938 to 1972. The record is 100.7 mm (4.0 in) in 1967, marked on the chart; the median year is 59.5 mm (2.3 in).
Wettest five days (Rx5day) at Killaloe by year
Year
Wettest five days (Rx5day)
1938
91.9 mm (3.6 in)
1939
82.9 mm (3.3 in)
1940
93.0 mm (3.7 in)
1941
69.7 mm (2.7 in)
1942
51.5 mm (2.0 in)
1943
54.4 mm (2.1 in)
1944
59.5 mm (2.3 in)
1945
55.7 mm (2.2 in)
1946
59.0 mm (2.3 in)
1947
63.2 mm (2.5 in)
1948
60.2 mm (2.4 in)
1949
34.5 mm (1.4 in)
1950
62.6 mm (2.5 in)
1951
36.1 mm (1.4 in)
1952
49.7 mm (2.0 in)
1953
59.9 mm (2.4 in)
1954
43.2 mm (1.7 in)
1955
95.5 mm (3.8 in)
1956
74.2 mm (2.9 in)
1957
66.0 mm (2.6 in)
1958
43.4 mm (1.7 in)
1959
84.9 mm (3.3 in)
1960
57.6 mm (2.3 in)
1961
50.6 mm (2.0 in)
1962
51.8 mm (2.0 in)
1963
66.8 mm (2.6 in)
1964
33.0 mm (1.3 in)
1965
36.4 mm (1.4 in)
1966
56.1 mm (2.2 in)
1967
100.7 mm (4.0 in)
1968
58.2 mm (2.3 in)
1969
60.7 mm (2.4 in)
1970
67.5 mm (2.7 in)
1971
42.4 mm (1.7 in)
1972
98.4 mm (3.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Killaloe, 1938 to 1972. The record is 41 days in 1961, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Killaloe by year
Year
Longest dry spell (CDD)
1938
14 days
1939
20 days
1940
14 days
1941
27 days
1942
16 days
1943
18 days
1944
19 days
1945
21 days
1946
11 days
1947
16 days
1948
16 days
1949
16 days
1950
22 days
1951
14 days
1952
20 days
1953
15 days
1954
18 days
1955
18 days
1956
16 days
1957
33 days
1958
20 days
1959
21 days
1960
18 days
1961
41 days
1962
19 days
1963
20 days
1964
20 days
1965
20 days
1966
15 days
1967
22 days
1968
18 days
1969
17 days
1970
17 days
1971
15 days
1972
13 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
33 years with a frost
Across 33 years with a frost, the median last spring frost at Killaloe falls on 29 May and the median first autumn frost on 9 September, which leaves a median of 104 days between them.
Fitted over all years, the growing season changes by -5.2 days per decade at this station.
Frost dates and growing season at Killaloe
Measure
Median, all years
Earliest period
Recent period (1942 to 1971)
Recent against earliest
Fitted trend
Last spring frost
29 May
n/a
30 May
n/a
+3.6 days per decade
First autumn frost
9 September
n/a
10 September
n/a
-1.6 days per decade
Growing days
104 days
n/a
104 days
n/a
-5.2 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
34 years, 1939 to 1972
A day with at least 38.9 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 67.7 mm (2.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Killaloe: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
38.9 mm (1.5 in)
5 years
48.4 mm (1.9 in)
10 years
53.9 mm (2.1 in)
25 years
60.1 mm (2.4 in)
50 years
64.1 mm (2.5 in)
Longer than the 34 years of record
100 years
67.7 mm (2.7 in)
Longer than the 34 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, 34 years of values from 1939 to 1972.
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: 62.0 mm (2.4 in) in 1967; 58.4 mm (2.3 in) in 1970; 57.4 mm (2.3 in) in 1972.
Download the Data
Data for Killaloe standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Killaloe 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.