Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Hattula Lepaa-1. 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 Hattula Lepaa-1, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
8.0 C (46.4 F)
-39.4 C (-38.9 F)
n/a
n/a
Feb
9.4 C (48.9 F)
-40.4 C (-40.7 F)
n/a
n/a
Mar
15.5 C (59.9 F)
-30.9 C (-23.6 F)
n/a
n/a
Apr
23.4 C (74.1 F)
-22.4 C (-8.3 F)
n/a
n/a
May
29.1 C (84.4 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
31.0 C (87.8 F)
-2.0 C (28.4 F)
n/a
n/a
Jul
32.0 C (89.6 F)
1.7 C (35.1 F)
n/a
n/a
Aug
31.7 C (89.1 F)
-0.5 C (31.1 F)
n/a
n/a
Sep
26.5 C (79.7 F)
-7.5 C (18.5 F)
n/a
n/a
Oct
18.1 C (64.6 F)
-17.0 C (1.4 F)
n/a
n/a
Nov
11.5 C (52.7 F)
-24.3 C (-11.7 F)
n/a
n/a
Dec
9.6 C (49.3 F)
-33.7 C (-28.7 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hattula Lepaa-1 still stand. 2006 holds the most, with 53.
Standing records at Hattula Lepaa-1 by the year they were set
Year set
Standing records
1959
22
1960
16
1961
28
1962
31
1963
42
1964
17
1965
42
1966
36
1967
30
1968
43
1969
27
1970
13
1971
21
1972
33
1973
49
1974
20
1975
42
1976
31
1977
39
1978
47
1979
22
1980
21
1981
25
1982
27
1983
22
1984
26
1985
33
1986
18
1987
40
1988
27
1989
39
1990
28
1991
15
1992
36
1993
19
1994
25
1995
33
1996
20
1997
26
1998
32
1999
32
2000
45
2001
21
2002
37
2003
34
2004
13
2005
24
2006
53
2007
42
All-Time Record Progression
4 new records
4 all-time records were set at Hattula Lepaa-1 between 11 August 1992 and 13 May 2002. Each dot is a new record.
When Hattula Lepaa-1 set new all-time records
Date
Kind
Detail
1992-08-11
Record high maximum temperature
Record high maximum temperature 31.7 C (89.1 F)
1992-09-15
Record daily precipitation
Record daily precipitation 52.2 mm (2.1 in)
1994-07-29
Record high maximum temperature
Record high maximum temperature 32.0 C (89.6 F)
2002-05-13
Record daily precipitation
Record daily precipitation 85.2 mm (3.4 in)
Wettest Day of Each Month
May: 85.2 mm (3.4 in)
The wettest day on record for each calendar month at Hattula Lepaa-1. The most was 85.2 mm (3.4 in) on 13 May 2002.
Record daily precipitation for each month at Hattula Lepaa-1
Month
Record daily precipitation (mm)
Date
Jan
21.0 mm (0.8 in)
1 January 1962
Feb
20.5 mm (0.8 in)
25 February 1990
Mar
18.6 mm (0.7 in)
18 March 1961
Apr
22.5 mm (0.9 in)
17 April 1972
May
85.2 mm (3.4 in)
13 May 2002
Jun
47.6 mm (1.9 in)
14 June 2001
Jul
49.3 mm (1.9 in)
6 July 1996
Aug
38.5 mm (1.5 in)
3 August 1978
Sep
52.2 mm (2.1 in)
15 September 1992
Oct
29.2 mm (1.1 in)
31 October 2006
Nov
30.3 mm (1.2 in)
5 November 2000
Dec
22.1 mm (0.9 in)
21 December 2003
Period of Record Coverage
1959 to 2007
Complete yearUnder 90 percent of days
49 years of record at Hattula Lepaa-1, 1959 to 2007. 1 years have data for under 90 percent of days and are left out of rankings: 1959.
Cooler than the station meanWarmer than the station mean
One stripe for each of 48 complete years at Hattula Lepaa-1, 1960 to 2007. Blue stripes are years cooler than the station's own mean of 4.1 C (39.4 F); red stripes are warmer. The coolest year was 1985, at 1.8 C (35.3 F), and the warmest was 2000, at 6.0 C (42.7 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Hattula Lepaa-1 as warming stripes, 1960 to 2007
Year
Annual mean temperature
Difference from the station mean
1960
4.0 C
-0.15 C
1961
5.5 C
+1.40 C
1962
3.4 C
-0.74 C
1963
3.3 C
-0.84 C
1964
4.1 C
-0.07 C
1965
3.6 C
-0.58 C
1966
2.7 C
-1.45 C
1967
4.1 C
+0.01 C
1968
3.3 C
-0.80 C
1969
2.8 C
-1.29 C
1970
3.1 C
-1.01 C
1971
4.0 C
-0.12 C
1972
4.8 C
+0.71 C
1973
4.1 C
-0.01 C
1974
5.4 C
+1.22 C
1975
5.4 C
+1.29 C
1976
2.2 C
-1.89 C
1977
3.2 C
-0.90 C
1978
2.3 C
-1.80 C
1979
3.6 C
-0.49 C
1980
3.1 C
-1.05 C
1981
3.4 C
-0.70 C
1982
4.1 C
-0.04 C
1983
4.6 C
+0.51 C
1984
4.6 C
+0.47 C
1985
1.8 C
-2.31 C
1986
3.3 C
-0.81 C
1987
1.9 C
-2.26 C
1988
4.4 C
+0.22 C
1989
6.0 C
+1.82 C
1990
5.3 C
+1.18 C
1991
4.8 C
+0.62 C
1992
5.1 C
+0.94 C
1993
4.2 C
+0.03 C
1994
4.0 C
-0.10 C
1995
4.8 C
+0.64 C
1996
3.5 C
-0.59 C
1997
4.6 C
+0.48 C
1998
4.0 C
-0.09 C
1999
4.9 C
+0.72 C
2000
6.0 C
+1.83 C
2001
4.6 C
+0.48 C
2002
4.7 C
+0.60 C
2003
4.5 C
+0.37 C
2004
4.8 C
+0.62 C
2005
5.4 C
+1.22 C
2006
5.4 C
+1.23 C
2007
5.5 C
+1.39 C
The annual mean temperature here has risen by 0.3 C (0.1 to 0.5) per decade over 1960 to 2007. In Fahrenheit: 0.6 F (0.2 to 0.9) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Hattula Lepaa-1
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.1 to 0.5) per decade
0.6 F (0.2 to 0.9) per decade
1960 to 2007
48
Rise
Mean daily maximum
0.3 C (0.1 to 0.5) per decade
0.6 F (0.2 to 0.9) per decade
1960 to 2007
48
Rise
Mean daily minimum
0.3 C (0.1 to 0.5) per decade
0.5 F (0.1 to 0.9) per decade
1960 to 2007
48
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
1959 to 2007
Yearly extremes at Hattula Lepaa-1: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
32.0 C (89.6 F)
1994
28.7 C (83.7 F)
49
Coldest night (TNn)
-40.4 C (-40.7 F)
1966
-30.3 C (-22.5 F)
49
Wettest day (Rx1day)
85.2 mm (3.4 in)
2002
29.2 mm (1.1 in)
49
Wettest five days (Rx5day)
92.5 mm (3.6 in)
2002
51.5 mm (2.0 in)
49
Longest dry spell (CDD)
46 days
1969
24 days
49
Hottest day (TXx)
The hottest day of the year at Hattula Lepaa-1, 1959 to 2007. The record is 32.0 C (89.6 F) in 1994, marked on the chart; the median year is 28.7 C (83.7 F).
Hottest day (TXx) at Hattula Lepaa-1 by year
Year
Hottest day (TXx)
1959
28.7 C (83.7 F)
1960
29.1 C (84.4 F)
1961
28.2 C (82.8 F)
1962
24.0 C (75.2 F)
1963
29.6 C (85.3 F)
1964
30.0 C (86.0 F)
1965
26.6 C (79.9 F)
1966
28.4 C (83.1 F)
1967
29.0 C (84.2 F)
1968
29.5 C (85.1 F)
1969
29.6 C (85.3 F)
1970
27.5 C (81.5 F)
1971
28.4 C (83.1 F)
1972
30.7 C (87.3 F)
1973
29.8 C (85.6 F)
1974
25.5 C (77.9 F)
1975
28.4 C (83.1 F)
1976
25.5 C (77.9 F)
1977
31.0 C (87.8 F)
1978
27.5 C (81.5 F)
1979
29.0 C (84.2 F)
1980
29.1 C (84.4 F)
1981
26.5 C (79.7 F)
1982
28.6 C (83.5 F)
1983
28.7 C (83.7 F)
1984
28.3 C (82.9 F)
1985
28.7 C (83.7 F)
1986
29.0 C (84.2 F)
1987
27.7 C (81.9 F)
1988
30.6 C (87.1 F)
1989
29.8 C (85.6 F)
1990
27.5 C (81.5 F)
1991
28.1 C (82.6 F)
1992
31.7 C (89.1 F)
1993
27.4 C (81.3 F)
1994
32.0 C (89.6 F)
1995
29.6 C (85.3 F)
1996
27.2 C (81.0 F)
1997
30.0 C (86.0 F)
1998
26.5 C (79.7 F)
1999
30.7 C (87.3 F)
2000
29.4 C (84.9 F)
2001
28.6 C (83.5 F)
2002
28.0 C (82.4 F)
2003
31.2 C (88.2 F)
2004
27.5 C (81.5 F)
2005
28.9 C (84.0 F)
2006
30.5 C (86.9 F)
2007
27.8 C (82.0 F)
Coldest night (TNn)
The coldest night of the year at Hattula Lepaa-1, 1959 to 2007. The record is -40.4 C (-40.7 F) in 1966, marked on the chart; the median year is -30.3 C (-22.5 F).
Coldest night (TNn) at Hattula Lepaa-1 by year
Year
Coldest night (TNn)
1959
-29.9 C (-21.8 F)
1960
-30.6 C (-23.1 F)
1961
-29.3 C (-20.7 F)
1962
-30.3 C (-22.5 F)
1963
-32.9 C (-27.2 F)
1964
-30.7 C (-23.3 F)
1965
-29.6 C (-21.3 F)
1966
-40.4 C (-40.7 F)
1967
-39.4 C (-38.9 F)
1968
-37.4 C (-35.3 F)
1969
-32.8 C (-27.0 F)
1970
-35.2 C (-31.4 F)
1971
-27.5 C (-17.5 F)
1972
-29.5 C (-21.1 F)
1973
-31.0 C (-23.8 F)
1974
-17.0 C (1.4 F)
1975
-24.5 C (-12.1 F)
1976
-30.9 C (-23.6 F)
1977
-33.3 C (-27.9 F)
1978
-33.7 C (-28.7 F)
1979
-38.0 C (-36.4 F)
1980
-33.0 C (-27.4 F)
1981
-30.6 C (-23.1 F)
1982
-35.0 C (-31.0 F)
1983
-27.0 C (-16.6 F)
1984
-28.2 C (-18.8 F)
1985
-36.5 C (-33.7 F)
1986
-30.3 C (-22.5 F)
1987
-37.5 C (-35.5 F)
1988
-26.0 C (-14.8 F)
1989
-28.7 C (-19.7 F)
1990
-24.3 C (-11.7 F)
1991
-26.6 C (-15.9 F)
1992
-25.5 C (-13.9 F)
1993
-23.0 C (-9.4 F)
1994
-31.7 C (-25.1 F)
1995
-33.6 C (-28.5 F)
1996
-32.9 C (-27.2 F)
1997
-25.4 C (-13.7 F)
1998
-28.3 C (-18.9 F)
1999
-32.0 C (-25.6 F)
2000
-25.0 C (-13.0 F)
2001
-27.7 C (-17.9 F)
2002
-29.0 C (-20.2 F)
2003
-33.4 C (-28.1 F)
2004
-25.7 C (-14.3 F)
2005
-22.9 C (-9.2 F)
2006
-28.7 C (-19.7 F)
2007
-35.7 C (-32.3 F)
Wettest day (Rx1day)
The wettest day of the year at Hattula Lepaa-1, 1959 to 2007. The record is 85.2 mm (3.4 in) in 2002, marked on the chart; the median year is 29.2 mm (1.1 in).
Wettest day (Rx1day) at Hattula Lepaa-1 by year
Year
Wettest day (Rx1day)
1959
27.9 mm (1.1 in)
1960
22.5 mm (0.9 in)
1961
25.8 mm (1.0 in)
1962
30.3 mm (1.2 in)
1963
19.8 mm (0.8 in)
1964
15.4 mm (0.6 in)
1965
38.1 mm (1.5 in)
1966
29.3 mm (1.2 in)
1967
17.0 mm (0.7 in)
1968
29.2 mm (1.1 in)
1969
37.2 mm (1.5 in)
1970
30.8 mm (1.2 in)
1971
15.7 mm (0.6 in)
1972
30.0 mm (1.2 in)
1973
16.5 mm (0.6 in)
1974
26.7 mm (1.1 in)
1975
26.5 mm (1.0 in)
1976
46.7 mm (1.8 in)
1977
19.5 mm (0.8 in)
1978
38.5 mm (1.5 in)
1979
36.2 mm (1.4 in)
1980
27.3 mm (1.1 in)
1981
33.5 mm (1.3 in)
1982
18.7 mm (0.7 in)
1983
23.5 mm (0.9 in)
1984
27.0 mm (1.1 in)
1985
35.6 mm (1.4 in)
1986
20.0 mm (0.8 in)
1987
27.8 mm (1.1 in)
1988
29.0 mm (1.1 in)
1989
41.0 mm (1.6 in)
1990
20.5 mm (0.8 in)
1991
16.2 mm (0.6 in)
1992
52.2 mm (2.1 in)
1993
32.7 mm (1.3 in)
1994
29.5 mm (1.2 in)
1995
28.4 mm (1.1 in)
1996
49.3 mm (1.9 in)
1997
34.5 mm (1.4 in)
1998
18.1 mm (0.7 in)
1999
30.9 mm (1.2 in)
2000
30.3 mm (1.2 in)
2001
47.6 mm (1.9 in)
2002
85.2 mm (3.4 in)
2003
27.2 mm (1.1 in)
2004
41.1 mm (1.6 in)
2005
28.8 mm (1.1 in)
2006
29.2 mm (1.1 in)
2007
32.0 mm (1.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hattula Lepaa-1, 1959 to 2007. The record is 92.5 mm (3.6 in) in 2002, marked on the chart; the median year is 51.5 mm (2.0 in).
Wettest five days (Rx5day) at Hattula Lepaa-1 by year
Year
Wettest five days (Rx5day)
1959
31.7 mm (1.2 in)
1960
43.5 mm (1.7 in)
1961
65.8 mm (2.6 in)
1962
61.6 mm (2.4 in)
1963
43.3 mm (1.7 in)
1964
27.5 mm (1.1 in)
1965
66.0 mm (2.6 in)
1966
45.1 mm (1.8 in)
1967
37.2 mm (1.5 in)
1968
58.2 mm (2.3 in)
1969
42.9 mm (1.7 in)
1970
53.4 mm (2.1 in)
1971
36.5 mm (1.4 in)
1972
68.0 mm (2.7 in)
1973
31.3 mm (1.2 in)
1974
53.0 mm (2.1 in)
1975
46.1 mm (1.8 in)
1976
56.3 mm (2.2 in)
1977
33.5 mm (1.3 in)
1978
51.5 mm (2.0 in)
1979
80.4 mm (3.2 in)
1980
46.3 mm (1.8 in)
1981
55.3 mm (2.2 in)
1982
33.2 mm (1.3 in)
1983
46.7 mm (1.8 in)
1984
63.6 mm (2.5 in)
1985
44.1 mm (1.7 in)
1986
52.6 mm (2.1 in)
1987
53.9 mm (2.1 in)
1988
44.2 mm (1.7 in)
1989
63.7 mm (2.5 in)
1990
36.9 mm (1.5 in)
1991
41.7 mm (1.6 in)
1992
65.6 mm (2.6 in)
1993
48.9 mm (1.9 in)
1994
46.9 mm (1.8 in)
1995
51.6 mm (2.0 in)
1996
82.4 mm (3.2 in)
1997
77.9 mm (3.1 in)
1998
36.7 mm (1.4 in)
1999
43.8 mm (1.7 in)
2000
46.7 mm (1.8 in)
2001
74.6 mm (2.9 in)
2002
92.5 mm (3.6 in)
2003
74.0 mm (2.9 in)
2004
90.3 mm (3.6 in)
2005
40.3 mm (1.6 in)
2006
68.8 mm (2.7 in)
2007
59.8 mm (2.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hattula Lepaa-1, 1959 to 2007. The record is 46 days in 1969, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Hattula Lepaa-1 by year
Year
Longest dry spell (CDD)
1959
32 days
1960
35 days
1961
25 days
1962
19 days
1963
31 days
1964
38 days
1965
28 days
1966
27 days
1967
15 days
1968
20 days
1969
46 days
1970
23 days
1971
34 days
1972
37 days
1973
17 days
1974
26 days
1975
15 days
1976
20 days
1977
18 days
1978
23 days
1979
25 days
1980
44 days
1981
27 days
1982
20 days
1983
34 days
1984
20 days
1985
12 days
1986
19 days
1987
33 days
1988
16 days
1989
23 days
1990
24 days
1991
15 days
1992
31 days
1993
30 days
1994
37 days
1995
15 days
1996
27 days
1997
27 days
1998
16 days
1999
22 days
2000
18 days
2001
17 days
2002
35 days
2003
24 days
2004
22 days
2005
24 days
2006
24 days
2007
26 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
48 years with a frost
Across 48 years with a frost, the median last spring frost at Hattula Lepaa-1 falls on 20 May and the median first autumn frost on 18 September, which leaves a median of 123 days between them.
Fitted over all years, the growing season changes by -0.5 days per decade at this station.
Frost dates and growing season at Hattula Lepaa-1
Measure
Median, all years
Earliest period
Recent period (1978 to 2007)
Recent against earliest
Fitted trend
Last spring frost
20 May
n/a
20 May
n/a
+0.1 days per decade
First autumn frost
18 September
n/a
18 September
n/a
-0.4 days per decade
Growing days
123 days
n/a
123 days
n/a
-0.5 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
49 years, 1959 to 2007
A day with at least 28.3 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 69.2 mm (2.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Hattula Lepaa-1: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
28.3 mm (1.1 in)
5 years
38.0 mm (1.5 in)
10 years
44.9 mm (1.8 in)
25 years
54.2 mm (2.1 in)
50 years
61.5 mm (2.4 in)
Longer than the 49 years of record
100 years
69.2 mm (2.7 in)
Longer than the 49 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, 49 years of values from 1959 to 2007.
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: 85.2 mm (3.4 in) in 2002; 52.2 mm (2.1 in) in 1992; 49.3 mm (1.9 in) in 1996.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Hattula Lepaa-1, at 1974. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1974 ran 0.2 C (0.3 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Hattula Lepaa-1, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1974
-0.2
-0.3
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Hattula Lepaa-1 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hattula Lepaa-1 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.