Record envelope, standing records and threshold days for Johnson Exp Farm (USC00124407), Indiana, United States, with 44 years of record.
Key Facts for Johnson Exp Farm
Johnson Exp Farm (USC00124407) is a weather station in Indiana, United States at 38.27 latitude and -87.75 longitude, 134 m (440 ft) above sea level.
The station reports from 1936 to 1979, 44 years of record.
1,464 records set at Johnson Exp Farm still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Johnson Exp Farm set a daily record high minimum temperature of 11.7 C (53.1 F) on 23 March 1979.
About the Station
Location: Indiana, United States, 38.27 latitude, -87.75 longitude.
Elevation: 134 m (440 ft).
Period of record: 1936 to 1979, 44 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 Johnson Exp Farm. 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 Johnson Exp Farm, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.2 C (72.0 F)
-29.4 C (-20.9 F)
n/a
n/a
Feb
25.0 C (77.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Apr
31.7 C (89.1 F)
-6.1 C (21.0 F)
n/a
n/a
May
37.2 C (99.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jun
41.1 C (106.0 F)
4.4 C (39.9 F)
n/a
n/a
Jul
43.3 C (109.9 F)
8.3 C (46.9 F)
n/a
n/a
Aug
41.1 C (106.0 F)
7.2 C (45.0 F)
n/a
n/a
Sep
40.0 C (104.0 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-6.1 C (21.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-21.7 C (-7.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Johnson Exp Farm still stand. 1936 holds the most, with 56.
Standing records at Johnson Exp Farm by the year they were set
Year set
Standing records
1936
56
1937
42
1938
51
1939
39
1940
50
1941
32
1942
43
1943
48
1944
42
1945
37
1946
28
1947
23
1948
28
1949
24
1950
41
1951
38
1952
37
1953
46
1954
42
1955
31
1956
24
1957
15
1958
24
1959
15
1960
39
1961
24
1962
31
1963
55
1964
29
1965
39
1966
23
1967
44
1968
30
1969
24
1970
26
1971
26
1972
30
1973
18
1974
33
1975
14
1976
43
1977
45
1978
21
1979
14
All-Time Record Progression
3 new records
3 all-time records were set at Johnson Exp Farm between 17 January 1977 and 17 January 1978. Each dot is a new record.
When Johnson Exp Farm set new all-time records
Date
Kind
Detail
1977-01-17
Record low maximum temperature
Record low maximum temperature -20.0 C (-4.0 F)
1977-01-17
Record low minimum temperature
Record low minimum temperature -29.4 C (-20.9 F)
1978-01-17
Record daily snowfall
Record daily snowfall 30.5 cm (12.0 in)
Wettest Day of Each Month
May: 149.6 mm (5.9 in)
The wettest day on record for each calendar month at Johnson Exp Farm. The most was 149.6 mm (5.9 in) on 8 May 1961.
Record daily precipitation for each month at Johnson Exp Farm
Month
Record daily precipitation (mm)
Date
Jan
108.2 mm (4.3 in)
14 January 1937
Feb
101.1 mm (4.0 in)
26 February 1945
Mar
131.3 mm (5.2 in)
9 March 1964
Apr
88.1 mm (3.5 in)
24 April 1975
May
149.6 mm (5.9 in)
8 May 1961
Jun
71.4 mm (2.8 in)
9 June 1939
Jul
105.2 mm (4.1 in)
14 July 1945
Aug
84.3 mm (3.3 in)
5 August 1959
Sep
72.4 mm (2.9 in)
11 September 1965
Oct
62.0 mm (2.4 in)
17 October 1967
Nov
77.2 mm (3.0 in)
18 November 1938
Dec
44.5 mm (1.8 in)
6 December 1953
Period of Record Coverage
1936 to 1979
Complete yearUnder 90 percent of days
44 years of record at Johnson Exp Farm, 1936 to 1979. 3 years have data for under 90 percent of days and are left out of rankings: 1936, 1978, 1979.
Cooler than the station meanWarmer than the station mean
One stripe for each of 38 complete years at Johnson Exp Farm, 1937 to 1977. Blue stripes are years cooler than the station's own mean of 13.5 C (56.2 F); red stripes are warmer. The coolest year was 1976, at 12.0 C (53.7 F), and the warmest was 1938, at 15.4 C (59.7 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Johnson Exp Farm as warming stripes, 1937 to 1977
Year
Annual mean temperature
Difference from the station mean
1937
13.5 C
+0.04 C
1938
15.4 C
+1.93 C
1939
14.7 C
+1.24 C
1940
12.9 C
-0.59 C
1941
14.5 C
+1.00 C
1942
13.8 C
+0.37 C
1944
14.2 C
+0.75 C
1945
13.3 C
-0.18 C
1946
14.8 C
+1.29 C
1947
13.1 C
-0.35 C
1948
13.6 C
+0.15 C
1949
14.3 C
+0.87 C
1950
13.1 C
-0.36 C
1951
13.2 C
-0.28 C
1952
14.5 C
+1.06 C
1953
15.0 C
+1.52 C
1954
14.8 C
+1.36 C
1955
14.2 C
+0.68 C
1956
14.4 C
+0.94 C
1957
14.0 C
+0.53 C
1958
12.6 C
-0.91 C
1959
13.9 C
+0.47 C
1960
12.8 C
-0.72 C
1962
13.5 C
-0.01 C
1963
13.0 C
-0.44 C
1964
14.3 C
+0.81 C
1966
12.4 C
-1.09 C
1967
12.3 C
-1.20 C
1968
12.1 C
-1.37 C
1969
12.1 C
-1.35 C
1970
12.5 C
-0.98 C
1971
13.0 C
-0.52 C
1972
12.3 C
-1.19 C
1973
13.5 C
+0.05 C
1974
12.6 C
-0.83 C
1975
13.0 C
-0.49 C
1976
12.0 C
-1.43 C
1977
12.5 C
-0.95 C
The annual mean temperature here has fallen by 0.5 C (0.3 to 0.7) per decade over 1937 to 1977. In Fahrenheit: 0.9 F (0.5 to 1.2) per decade. The slope is a straight line fitted to 38 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Johnson Exp Farm
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.5 C (-0.7 to -0.3) per decade
-0.9 F (-1.2 to -0.5) per decade
1937 to 1977
38
Fall
Mean daily maximum
-0.6 C (-0.9 to -0.4) per decade
-1.1 F (-1.5 to -0.7) per decade
1937 to 1977
38
Fall
Mean daily minimum
-0.4 C (-0.6 to -0.2) per decade
-0.7 F (-1.0 to -0.4) per decade
1937 to 1977
38
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
1936 to 1979
Yearly extremes at Johnson Exp Farm: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1936
37.2 C (99.0 F)
44
Coldest night (TNn)
-29.4 C (-20.9 F)
1977
-19.4 C (-2.9 F)
44
Wettest day (Rx1day)
149.6 mm (5.9 in)
1961
65.7 mm (2.6 in)
44
Wettest five days (Rx5day)
275.6 mm (10.9 in)
1961
97.2 mm (3.8 in)
44
Longest dry spell (CDD)
35 days
1963
20 days
44
Hottest day (TXx)
The hottest day of the year at Johnson Exp Farm, 1936 to 1979. The record is 43.3 C (109.9 F) in 1936, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Johnson Exp Farm by year
Year
Hottest day (TXx)
1936
43.3 C (109.9 F)
1937
38.9 C (102.0 F)
1938
40.0 C (104.0 F)
1939
39.4 C (102.9 F)
1940
38.9 C (102.0 F)
1941
40.0 C (104.0 F)
1942
37.8 C (100.0 F)
1943
40.0 C (104.0 F)
1944
41.1 C (106.0 F)
1945
36.7 C (98.1 F)
1946
37.2 C (99.0 F)
1947
40.0 C (104.0 F)
1948
37.2 C (99.0 F)
1949
35.6 C (96.1 F)
1950
37.2 C (99.0 F)
1951
37.8 C (100.0 F)
1952
40.6 C (105.1 F)
1953
40.0 C (104.0 F)
1954
41.1 C (106.0 F)
1955
37.2 C (99.0 F)
1956
37.2 C (99.0 F)
1957
36.1 C (97.0 F)
1958
36.1 C (97.0 F)
1959
36.1 C (97.0 F)
1960
37.2 C (99.0 F)
1961
34.4 C (93.9 F)
1962
38.3 C (100.9 F)
1963
37.2 C (99.0 F)
1964
39.4 C (102.9 F)
1965
38.3 C (100.9 F)
1966
40.0 C (104.0 F)
1967
35.6 C (96.1 F)
1968
35.6 C (96.1 F)
1969
35.6 C (96.1 F)
1970
36.7 C (98.1 F)
1971
36.7 C (98.1 F)
1972
35.6 C (96.1 F)
1973
35.0 C (95.0 F)
1974
36.1 C (97.0 F)
1975
35.0 C (95.0 F)
1976
37.2 C (99.0 F)
1977
36.7 C (98.1 F)
1978
38.9 C (102.0 F)
1979
23.9 C (75.0 F)
Coldest night (TNn)
The coldest night of the year at Johnson Exp Farm, 1936 to 1979. The record is -29.4 C (-20.9 F) in 1977, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Johnson Exp Farm by year
Year
Coldest night (TNn)
1936
-10.6 C (12.9 F)
1937
-14.4 C (6.1 F)
1938
-17.8 C (0.0 F)
1939
-18.3 C (-0.9 F)
1940
-25.6 C (-14.1 F)
1941
-12.2 C (10.0 F)
1942
-22.8 C (-9.0 F)
1943
-20.0 C (-4.0 F)
1944
-15.6 C (3.9 F)
1945
-20.6 C (-5.1 F)
1946
-18.9 C (-2.0 F)
1947
-15.6 C (3.9 F)
1948
-22.2 C (-8.0 F)
1949
-15.0 C (5.0 F)
1950
-18.3 C (-0.9 F)
1951
-27.8 C (-18.0 F)
1952
-14.4 C (6.1 F)
1953
-15.0 C (5.0 F)
1954
-15.0 C (5.0 F)
1955
-17.8 C (0.0 F)
1956
-15.0 C (5.0 F)
1957
-17.2 C (1.0 F)
1958
-20.0 C (-4.0 F)
1959
-20.0 C (-4.0 F)
1960
-22.2 C (-8.0 F)
1961
-22.2 C (-8.0 F)
1962
-24.4 C (-11.9 F)
1963
-27.2 C (-17.0 F)
1964
-19.4 C (-2.9 F)
1965
-22.2 C (-8.0 F)
1966
-22.2 C (-8.0 F)
1967
-18.3 C (-0.9 F)
1968
-21.1 C (-6.0 F)
1969
-16.1 C (3.0 F)
1970
-21.7 C (-7.1 F)
1971
-18.9 C (-2.0 F)
1972
-22.8 C (-9.0 F)
1973
-19.4 C (-2.9 F)
1974
-16.1 C (3.0 F)
1975
-13.3 C (8.1 F)
1976
-20.6 C (-5.1 F)
1977
-29.4 C (-20.9 F)
1978
-22.2 C (-8.0 F)
1979
-22.8 C (-9.0 F)
Wettest day (Rx1day)
The wettest day of the year at Johnson Exp Farm, 1936 to 1979. The record is 149.6 mm (5.9 in) in 1961, marked on the chart; the median year is 65.7 mm (2.6 in).
Wettest day (Rx1day) at Johnson Exp Farm by year
Year
Wettest day (Rx1day)
1936
68.1 mm (2.7 in)
1937
108.2 mm (4.3 in)
1938
77.2 mm (3.0 in)
1939
71.4 mm (2.8 in)
1940
70.6 mm (2.8 in)
1941
54.4 mm (2.1 in)
1942
36.3 mm (1.4 in)
1943
77.0 mm (3.0 in)
1944
40.9 mm (1.6 in)
1945
105.2 mm (4.1 in)
1946
54.6 mm (2.1 in)
1947
52.3 mm (2.1 in)
1948
75.4 mm (3.0 in)
1949
77.0 mm (3.0 in)
1950
83.1 mm (3.3 in)
1951
48.5 mm (1.9 in)
1952
55.1 mm (2.2 in)
1953
44.5 mm (1.8 in)
1954
54.9 mm (2.2 in)
1955
73.4 mm (2.9 in)
1956
65.0 mm (2.6 in)
1957
62.0 mm (2.4 in)
1958
77.0 mm (3.0 in)
1959
84.3 mm (3.3 in)
1960
44.7 mm (1.8 in)
1961
149.6 mm (5.9 in)
1962
54.1 mm (2.1 in)
1963
69.9 mm (2.8 in)
1964
131.3 mm (5.2 in)
1965
78.0 mm (3.1 in)
1966
73.7 mm (2.9 in)
1967
94.0 mm (3.7 in)
1968
58.7 mm (2.3 in)
1969
58.9 mm (2.3 in)
1970
62.0 mm (2.4 in)
1971
61.7 mm (2.4 in)
1972
66.3 mm (2.6 in)
1973
43.2 mm (1.7 in)
1974
58.4 mm (2.3 in)
1975
88.1 mm (3.5 in)
1976
63.5 mm (2.5 in)
1977
97.3 mm (3.8 in)
1978
46.7 mm (1.8 in)
1979
35.8 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Johnson Exp Farm, 1936 to 1979. The record is 275.6 mm (10.9 in) in 1961, marked on the chart; the median year is 97.2 mm (3.8 in).
Wettest five days (Rx5day) at Johnson Exp Farm by year
Year
Wettest five days (Rx5day)
1936
97.6 mm (3.8 in)
1937
171.2 mm (6.7 in)
1938
99.0 mm (3.9 in)
1939
115.9 mm (4.6 in)
1940
113.7 mm (4.5 in)
1941
76.5 mm (3.0 in)
1942
75.3 mm (3.0 in)
1943
104.9 mm (4.1 in)
1944
81.0 mm (3.2 in)
1945
154.9 mm (6.1 in)
1946
147.1 mm (5.8 in)
1947
64.5 mm (2.5 in)
1948
94.8 mm (3.7 in)
1949
122.7 mm (4.8 in)
1950
129.1 mm (5.1 in)
1951
70.9 mm (2.8 in)
1952
90.2 mm (3.6 in)
1953
52.4 mm (2.1 in)
1954
85.9 mm (3.4 in)
1955
118.3 mm (4.7 in)
1956
70.0 mm (2.8 in)
1957
134.1 mm (5.3 in)
1958
128.8 mm (5.1 in)
1959
127.5 mm (5.0 in)
1960
70.4 mm (2.8 in)
1961
275.6 mm (10.9 in)
1962
94.5 mm (3.7 in)
1963
115.9 mm (4.6 in)
1964
179.0 mm (7.0 in)
1965
96.8 mm (3.8 in)
1966
92.0 mm (3.6 in)
1967
162.3 mm (6.4 in)
1968
68.4 mm (2.7 in)
1969
93.2 mm (3.7 in)
1970
81.8 mm (3.2 in)
1971
85.8 mm (3.4 in)
1972
150.3 mm (5.9 in)
1973
104.6 mm (4.1 in)
1974
90.6 mm (3.6 in)
1975
135.6 mm (5.3 in)
1976
87.4 mm (3.4 in)
1977
99.6 mm (3.9 in)
1978
89.5 mm (3.5 in)
1979
77.5 mm (3.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Johnson Exp Farm, 1936 to 1979. The record is 35 days in 1963, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Johnson Exp Farm by year
Year
Longest dry spell (CDD)
1936
28 days
1937
13 days
1938
30 days
1939
24 days
1940
16 days
1941
17 days
1942
16 days
1943
29 days
1944
29 days
1945
19 days
1946
19 days
1947
29 days
1948
20 days
1949
21 days
1950
19 days
1951
15 days
1952
33 days
1953
29 days
1954
19 days
1955
25 days
1956
27 days
1957
22 days
1958
20 days
1959
25 days
1960
22 days
1961
17 days
1962
31 days
1963
35 days
1964
27 days
1965
16 days
1966
17 days
1967
19 days
1968
18 days
1969
17 days
1970
21 days
1971
16 days
1972
18 days
1973
15 days
1974
21 days
1975
16 days
1976
25 days
1977
18 days
1978
24 days
1979
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
38 years with a frost
Across 38 years with a frost, the median last spring frost at Johnson Exp Farm falls on 13 April and the median first autumn frost on 25 October, which leaves a median of 196 days between them.
Fitted over all years, the growing season changes by +0.4 days per decade at this station.
Frost dates and growing season at Johnson Exp Farm
Measure
Median, all years
Earliest period
Recent period (1946 to 1977)
Recent against earliest
Fitted trend
Last spring frost
13 April
n/a
12 April
n/a
-1.2 days per decade
First autumn frost
25 October
n/a
25 October
n/a
-0.8 days per decade
Growing days
196 days
n/a
196 days
n/a
+0.4 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
40 years, 1937 to 1977
A day with at least 65.6 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 154.2 mm (6.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Johnson Exp Farm: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
65.6 mm (2.6 in)
5 years
85.9 mm (3.4 in)
10 years
100.7 mm (4.0 in)
25 years
120.9 mm (4.8 in)
50 years
137.0 mm (5.4 in)
Longer than the 40 years of record
100 years
154.2 mm (6.1 in)
Longer than the 40 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, 40 years of values from 1937 to 1977.
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: 149.6 mm (5.9 in) in 1961; 131.3 mm (5.2 in) in 1964; 108.2 mm (4.3 in) in 1937.
Download the Data
Data for Johnson Exp Farm standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Johnson Exp Farm 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.