Record envelope, standing records and threshold days for Grannis (USC00032908), Arkansas, United States, with 39 years of record.
Key Facts for Grannis
Grannis (USC00032908) is a weather station in Arkansas, United States at 34.25 latitude and -94.33 longitude, 281 m (922 ft) above sea level.
The station reports from 1919 to 1957, 39 years of record.
1,464 records set at Grannis still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Grannis set a daily record precipitation of 46.5 mm (1.8 in) on 27 April 1957.
About the Station
Location: Arkansas, United States, 34.25 latitude, -94.33 longitude.
Elevation: 281 m (922 ft).
Period of record: 1919 to 1957, 39 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 Grannis. 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 Grannis, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.2 C (81.0 F)
-25.6 C (-14.1 F)
n/a
n/a
Feb
30.0 C (86.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-15.6 C (3.9 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-6.1 C (21.0 F)
n/a
n/a
May
36.7 C (98.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
42.2 C (108.0 F)
5.6 C (42.1 F)
n/a
n/a
Jul
45.0 C (113.0 F)
10.6 C (51.1 F)
n/a
n/a
Aug
46.1 C (115.0 F)
10.0 C (50.0 F)
n/a
n/a
Sep
40.0 C (104.0 F)
1.7 C (35.1 F)
n/a
n/a
Oct
40.6 C (105.1 F)
-5.6 C (21.9 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-12.2 C (10.0 F)
n/a
n/a
Dec
27.2 C (81.0 F)
-15.6 C (3.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Grannis still stand. 1925 holds the most, with 78.
Standing records at Grannis by the year they were set
Year set
Standing records
1919
41
1920
52
1921
47
1922
27
1923
39
1924
48
1925
78
1926
17
1928
21
1929
48
1930
46
1931
47
1932
55
1933
46
1934
50
1935
32
1936
61
1937
47
1938
48
1939
41
1940
48
1941
20
1942
36
1943
45
1944
23
1945
26
1946
25
1947
40
1948
32
1949
21
1950
50
1951
39
1952
38
1953
23
1954
29
1955
50
1956
23
1957
5
All-Time Record Progression
3 new records
3 all-time records were set at Grannis between 30 January 1951 and 16 July 1956. Each dot is a new record.
When Grannis set new all-time records
Date
Kind
Detail
1951-01-30
Record low maximum temperature
Record low maximum temperature -6.7 C (19.9 F)
1951-02-01
Record low maximum temperature
Record low maximum temperature -8.3 C (17.1 F)
1956-07-16
Record high minimum temperature
Record high minimum temperature 27.2 C (81.0 F)
Wettest Day of Each Month
Aug: 254.8 mm (10.0 in)
The wettest day on record for each calendar month at Grannis. The most was 254.8 mm (10.0 in) on 28 August 1947.
Record daily precipitation for each month at Grannis
Month
Record daily precipitation (mm)
Date
Jan
104.6 mm (4.1 in)
23 January 1938
Feb
110.5 mm (4.4 in)
12 February 1950
Mar
80.3 mm (3.2 in)
24 March 1920
Apr
105.7 mm (4.2 in)
8 April 1942
May
184.9 mm (7.3 in)
12 May 1920
Jun
137.9 mm (5.4 in)
13 June 1925
Jul
141.5 mm (5.6 in)
1 July 1940
Aug
254.8 mm (10.0 in)
28 August 1947
Sep
188.2 mm (7.4 in)
21 September 1950
Oct
158.0 mm (6.2 in)
17 October 1947
Nov
147.8 mm (5.8 in)
25 November 1952
Dec
110.5 mm (4.4 in)
30 December 1932
Period of Record Coverage
1919 to 1957
Complete yearUnder 90 percent of days
38 years of record at Grannis, 1919 to 1957. 6 years have data for under 90 percent of days and are left out of rankings: 1919, 1926, 1928, 1930, 1938, 1957.
Cooler than the station meanWarmer than the station mean
One stripe for each of 31 complete years at Grannis, 1920 to 1956. Blue stripes are years cooler than the station's own mean of 16.3 C (61.3 F); red stripes are warmer. The coolest year was 1924, at 15.4 C (59.7 F), and the warmest was 1939, at 17.4 C (63.3 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Grannis as warming stripes, 1920 to 1956
Year
Annual mean temperature
Difference from the station mean
1920
15.4 C
-0.86 C
1921
17.1 C
+0.78 C
1922
16.9 C
+0.59 C
1923
16.2 C
-0.14 C
1924
15.4 C
-0.92 C
1925
16.6 C
+0.27 C
1929
15.5 C
-0.82 C
1931
16.1 C
-0.23 C
1932
15.9 C
-0.39 C
1934
17.2 C
+0.86 C
1935
16.1 C
-0.18 C
1936
16.3 C
0.00 C
1937
15.5 C
-0.82 C
1939
17.4 C
+1.08 C
1940
15.4 C
-0.91 C
1941
16.3 C
0.00 C
1942
15.9 C
-0.38 C
1943
16.8 C
+0.47 C
1944
16.9 C
+0.64 C
1945
16.1 C
-0.17 C
1946
16.9 C
+0.58 C
1947
15.4 C
-0.90 C
1948
15.4 C
-0.86 C
1949
16.3 C
-0.03 C
1950
15.8 C
-0.45 C
1951
16.1 C
-0.20 C
1952
16.9 C
+0.56 C
1953
16.8 C
+0.47 C
1954
17.3 C
+0.98 C
1955
16.4 C
+0.12 C
1956
17.2 C
+0.89 C
The fitted trend in annual mean temperature here over 1920 to 1956 is 0.1 C (-0.1 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.2 to 0.6) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Grannis
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.2 to 0.6) per decade
1920 to 1956
31
Not clearly different from zero
Mean daily maximum
0.04 C (-0.26 to 0.35) per decade
0.1 F (-0.5 to 0.6) per decade
1920 to 1956
31
Not clearly different from zero
Mean daily minimum
0.20 C (-0.03 to 0.43) per decade
0.4 F (-0.1 to 0.8) per decade
1920 to 1956
31
Not clearly different from zero
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
1919 to 1957
Yearly extremes at Grannis: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.1 C (115.0 F)
1936
38.9 C (102.0 F)
38
Coldest night (TNn)
-25.6 C (-14.1 F)
1930
-12.8 C (9.0 F)
38
Wettest day (Rx1day)
254.8 mm (10.0 in)
1947
99.6 mm (3.9 in)
38
Wettest five days (Rx5day)
279.8 mm (11.0 in)
1920
163.0 mm (6.4 in)
38
Longest dry spell (CDD)
54 days
1930
23 days
38
Hottest day (TXx)
The hottest day of the year at Grannis, 1919 to 1957. The record is 46.1 C (115.0 F) in 1936, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Grannis by year
Year
Hottest day (TXx)
1919
38.3 C (100.9 F)
1920
35.6 C (96.1 F)
1921
35.6 C (96.1 F)
1922
37.2 C (99.0 F)
1923
38.9 C (102.0 F)
1924
38.9 C (102.0 F)
1925
39.4 C (102.9 F)
1926
38.3 C (100.9 F)
1928
36.7 C (98.1 F)
1929
40.0 C (104.0 F)
1930
45.0 C (113.0 F)
1931
38.9 C (102.0 F)
1932
38.3 C (100.9 F)
1933
42.8 C (109.0 F)
1934
42.8 C (109.0 F)
1935
43.3 C (109.9 F)
1936
46.1 C (115.0 F)
1937
42.8 C (109.0 F)
1938
40.6 C (105.1 F)
1939
41.1 C (106.0 F)
1940
35.0 C (95.0 F)
1941
37.2 C (99.0 F)
1942
38.9 C (102.0 F)
1943
43.3 C (109.9 F)
1944
41.7 C (107.1 F)
1945
37.8 C (100.0 F)
1946
39.4 C (102.9 F)
1947
41.7 C (107.1 F)
1948
35.6 C (96.1 F)
1949
35.6 C (96.1 F)
1950
32.8 C (91.0 F)
1951
39.4 C (102.9 F)
1952
40.0 C (104.0 F)
1953
38.3 C (100.9 F)
1954
41.1 C (106.0 F)
1955
36.7 C (98.1 F)
1956
41.1 C (106.0 F)
1957
31.7 C (89.1 F)
Coldest night (TNn)
The coldest night of the year at Grannis, 1919 to 1957. The record is -25.6 C (-14.1 F) in 1930, marked on the chart; the median year is -12.8 C (9.0 F).
Coldest night (TNn) at Grannis by year
Year
Coldest night (TNn)
1919
-11.7 C (10.9 F)
1920
-11.1 C (12.0 F)
1921
-10.6 C (12.9 F)
1922
-7.8 C (18.0 F)
1923
-12.2 C (10.0 F)
1924
-15.0 C (5.0 F)
1925
-15.0 C (5.0 F)
1926
-13.3 C (8.1 F)
1928
-8.3 C (17.1 F)
1929
-14.4 C (6.1 F)
1930
-25.6 C (-14.1 F)
1931
-12.2 C (10.0 F)
1932
-11.7 C (10.9 F)
1933
-18.9 C (-2.0 F)
1934
-11.1 C (12.0 F)
1935
-14.4 C (6.1 F)
1936
-15.0 C (5.0 F)
1937
-12.8 C (9.0 F)
1938
-12.8 C (9.0 F)
1939
-11.1 C (12.0 F)
1940
-20.6 C (-5.1 F)
1941
-9.4 C (15.1 F)
1942
-18.9 C (-2.0 F)
1943
-17.8 C (0.0 F)
1944
-14.4 C (6.1 F)
1945
-13.3 C (8.1 F)
1946
-11.1 C (12.0 F)
1947
-14.4 C (6.1 F)
1948
-12.8 C (9.0 F)
1949
-11.1 C (12.0 F)
1950
-15.6 C (3.9 F)
1951
-21.1 C (-6.0 F)
1952
-7.2 C (19.0 F)
1953
-11.1 C (12.0 F)
1954
-11.7 C (10.9 F)
1955
-14.4 C (6.1 F)
1956
-7.8 C (18.0 F)
1957
-13.3 C (8.1 F)
Wettest day (Rx1day)
The wettest day of the year at Grannis, 1919 to 1957. The record is 254.8 mm (10.0 in) in 1947, marked on the chart; the median year is 99.6 mm (3.9 in).
Wettest day (Rx1day) at Grannis by year
Year
Wettest day (Rx1day)
1919
76.7 mm (3.0 in)
1920
184.9 mm (7.3 in)
1921
102.6 mm (4.0 in)
1922
51.8 mm (2.0 in)
1923
112.5 mm (4.4 in)
1924
88.9 mm (3.5 in)
1925
137.9 mm (5.4 in)
1926
67.8 mm (2.7 in)
1928
105.2 mm (4.1 in)
1929
55.9 mm (2.2 in)
1930
97.0 mm (3.8 in)
1931
140.0 mm (5.5 in)
1932
110.5 mm (4.4 in)
1933
99.1 mm (3.9 in)
1934
100.1 mm (3.9 in)
1935
84.6 mm (3.3 in)
1936
108.0 mm (4.3 in)
1937
89.7 mm (3.5 in)
1938
104.6 mm (4.1 in)
1939
97.5 mm (3.8 in)
1940
141.5 mm (5.6 in)
1941
78.7 mm (3.1 in)
1942
105.7 mm (4.2 in)
1943
70.1 mm (2.8 in)
1944
72.4 mm (2.9 in)
1945
70.1 mm (2.8 in)
1946
111.3 mm (4.4 in)
1947
254.8 mm (10.0 in)
1948
104.1 mm (4.1 in)
1949
59.2 mm (2.3 in)
1950
188.2 mm (7.4 in)
1951
74.9 mm (2.9 in)
1952
147.8 mm (5.8 in)
1953
93.5 mm (3.7 in)
1954
118.4 mm (4.7 in)
1955
119.9 mm (4.7 in)
1956
52.1 mm (2.1 in)
1957
54.6 mm (2.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Grannis, 1919 to 1957. The record is 279.8 mm (11.0 in) in 1920, marked on the chart; the median year is 163.0 mm (6.4 in).
Wettest five days (Rx5day) at Grannis by year
Year
Wettest five days (Rx5day)
1919
191.3 mm (7.5 in)
1920
279.8 mm (11.0 in)
1921
187.5 mm (7.4 in)
1922
99.1 mm (3.9 in)
1923
161.3 mm (6.4 in)
1924
123.7 mm (4.9 in)
1925
163.8 mm (6.4 in)
1926
109.4 mm (4.3 in)
1928
190.7 mm (7.5 in)
1929
109.7 mm (4.3 in)
1930
179.1 mm (7.1 in)
1931
150.4 mm (5.9 in)
1932
118.6 mm (4.7 in)
1933
112.8 mm (4.4 in)
1934
125.5 mm (4.9 in)
1935
174.8 mm (6.9 in)
1936
173.1 mm (6.8 in)
1937
122.9 mm (4.8 in)
1938
269.5 mm (10.6 in)
1939
114.5 mm (4.5 in)
1940
202.5 mm (8.0 in)
1941
118.3 mm (4.7 in)
1942
172.5 mm (6.8 in)
1943
88.6 mm (3.5 in)
1944
165.6 mm (6.5 in)
1945
162.1 mm (6.4 in)
1946
183.6 mm (7.2 in)
1947
254.8 mm (10.0 in)
1948
118.1 mm (4.6 in)
1949
167.9 mm (6.6 in)
1950
198.6 mm (7.8 in)
1951
148.3 mm (5.8 in)
1952
167.8 mm (6.6 in)
1953
164.3 mm (6.5 in)
1954
194.4 mm (7.7 in)
1955
126.3 mm (5.0 in)
1956
93.0 mm (3.7 in)
1957
114.3 mm (4.5 in)
Longest dry spell (CDD)
The longest dry spell of the year at Grannis, 1919 to 1957. The record is 54 days in 1930, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Grannis by year
Year
Longest dry spell (CDD)
1919
23 days
1920
17 days
1921
25 days
1922
20 days
1923
19 days
1924
33 days
1925
33 days
1926
25 days
1928
22 days
1929
27 days
1930
54 days
1931
24 days
1932
14 days
1933
15 days
1934
26 days
1935
16 days
1936
17 days
1937
16 days
1938
33 days
1939
31 days
1940
17 days
1941
16 days
1942
15 days
1943
19 days
1944
26 days
1945
14 days
1946
23 days
1947
25 days
1948
26 days
1949
18 days
1950
21 days
1951
19 days
1952
34 days
1953
34 days
1954
21 days
1955
28 days
1956
49 days
1957
15 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
31 years with a frost
Across 31 years with a frost, the median last spring frost at Grannis falls on 5 April and the median first autumn frost on 3 November, which leaves a median of 208 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 Grannis
Measure
Median, all years
Earliest period
Recent period (1921 to 1956)
Recent against earliest
Fitted trend
Last spring frost
5 April
n/a
4 April
n/a
+1.1 days per decade
First autumn frost
3 November
n/a
4 November
n/a
+1.5 days per decade
Growing days
208 days
n/a
209 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
33 years, 1920 to 1956
A day with at least 98.1 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 254.7 mm (10.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Grannis: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
98.1 mm (3.9 in)
5 years
134.4 mm (5.3 in)
10 years
160.5 mm (6.3 in)
25 years
196.2 mm (7.7 in)
50 years
224.6 mm (8.8 in)
Longer than the 33 years of record
100 years
254.7 mm (10.0 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 1920 to 1956.
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: 254.8 mm (10.0 in) in 1947; 188.2 mm (7.4 in) in 1950; 184.9 mm (7.3 in) in 1920.
Download the Data
Data for Grannis standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grannis 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.