Record envelope, standing records and threshold days for Harriman (USC00403907), Tennessee, United States, with 70 years of record.
Key Facts for Harriman
Harriman (USC00403907) is a weather station in Tennessee, United States at 35.93 latitude and -84.55 longitude, 235 m (771 ft) above sea level.
The station reports from 1893 to 1962, 70 years of record.
1,464 records set at Harriman still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Harriman set a daily record precipitation of 50.8 mm (2.0 in) on 21 March 1962.
About the Station
Location: Tennessee, United States, 35.93 latitude, -84.55 longitude.
Elevation: 235 m (771 ft).
Period of record: 1893 to 1962, 70 years.
Eligible elements: prcp.
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 Harriman. 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 Harriman, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.9 C (75.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Feb
24.4 C (75.9 F)
-24.4 C (-11.9 F)
n/a
n/a
Mar
30.0 C (86.0 F)
-16.1 C (3.0 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-3.9 C (25.0 F)
n/a
n/a
May
36.7 C (98.1 F)
-0.6 C (30.9 F)
n/a
n/a
Jun
38.9 C (102.0 F)
6.1 C (43.0 F)
n/a
n/a
Jul
38.9 C (102.0 F)
10.6 C (51.1 F)
n/a
n/a
Aug
40.0 C (104.0 F)
10.0 C (50.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
2.2 C (36.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-6.1 C (21.0 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-10.6 C (12.9 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-17.8 C (0.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Harriman still stand. 1911 holds the most, with 132.
Standing records at Harriman by the year they were set
Year set
Standing records
1893
77
1894
42
1895
62
1896
63
1897
100
1898
97
1899
106
1900
87
1901
101
1902
59
1903
69
1904
53
1905
64
1906
48
1907
72
1908
81
1909
76
1910
75
1911
132
Wettest Day of Each Month
Feb: 114.3 mm (4.5 in)
The wettest day on record for each calendar month at Harriman. The most was 114.3 mm (4.5 in) on 28 February 1903.
Record daily precipitation for each month at Harriman
Month
Record daily precipitation (mm)
Date
Jan
102.9 mm (4.1 in)
2 January 1911
Feb
114.3 mm (4.5 in)
28 February 1903
Mar
97.0 mm (3.8 in)
11 March 1952
Apr
108.2 mm (4.3 in)
4 April 1897
May
71.1 mm (2.8 in)
21 May 1901
Jun
69.9 mm (2.8 in)
17 June 1960
Jul
101.6 mm (4.0 in)
3 July 1908
Aug
101.6 mm (4.0 in)
15 August 1901
Sep
79.2 mm (3.1 in)
14 September 1900
Oct
101.1 mm (4.0 in)
10 October 1911
Nov
100.1 mm (3.9 in)
28 November 1948
Dec
95.0 mm (3.7 in)
29 December 1954
Period of Record Coverage
1893 to 1911
Complete yearUnder 90 percent of days
19 years of record at Harriman, 1893 to 1911. 9 years have data for under 90 percent of days and are left out of rankings: 1893, 1894, 1895, 1896, 1902, 1903, 1904, 1906 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 10 complete years at Harriman, 1897 to 1911. Blue stripes are years cooler than the station's own mean of 14.6 C (58.4 F); red stripes are warmer. The coolest year was 1901, at 13.1 C (55.6 F), and the warmest was 1911, at 16.5 C (61.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Harriman as warming stripes, 1897 to 1911
Year
Annual mean temperature
Difference from the station mean
1897
14.5 C
-0.16 C
1898
14.7 C
+0.06 C
1899
14.2 C
-0.42 C
1900
14.9 C
+0.24 C
1901
13.1 C
-1.52 C
1905
14.1 C
-0.53 C
1908
15.4 C
+0.76 C
1909
14.8 C
+0.13 C
1910
14.3 C
-0.38 C
1911
16.5 C
+1.81 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1893 to 1962
Yearly extremes at Harriman: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1894
36.7 C (98.1 F)
19
Coldest night (TNn)
-24.4 C (-11.9 F)
1895
-15.0 C (5.0 F)
19
Wettest day (Rx1day)
114.3 mm (4.5 in)
1903
71.5 mm (2.8 in)
34
Wettest five days (Rx5day)
230.8 mm (9.1 in)
1908
121.5 mm (4.8 in)
34
Longest dry spell (CDD)
38 days
1903
19 days
34
Hottest day (TXx)
The hottest day of the year at Harriman, 1893 to 1962. The record is 40.0 C (104.0 F) in 1894, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at Harriman by year
Year
Hottest day (TXx)
1893
38.9 C (102.0 F)
1894
40.0 C (104.0 F)
1895
31.7 C (89.1 F)
1896
33.9 C (93.0 F)
1897
35.6 C (96.1 F)
1898
36.7 C (98.1 F)
1899
37.8 C (100.0 F)
1900
36.7 C (98.1 F)
1901
37.2 C (99.0 F)
1902
36.7 C (98.1 F)
1903
34.4 C (93.9 F)
1904
34.4 C (93.9 F)
1905
33.3 C (91.9 F)
1906
34.4 C (93.9 F)
1907
36.7 C (98.1 F)
1908
36.7 C (98.1 F)
1909
36.1 C (97.0 F)
1910
34.4 C (93.9 F)
1911
38.9 C (102.0 F)
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
Coldest night (TNn)
The coldest night of the year at Harriman, 1893 to 1962. The record is -24.4 C (-11.9 F) in 1895, marked on the chart; the median year is -15.0 C (5.0 F).
Coldest night (TNn) at Harriman by year
Year
Coldest night (TNn)
1893
-10.6 C (12.9 F)
1894
-17.8 C (0.0 F)
1895
-24.4 C (-11.9 F)
1896
-17.8 C (0.0 F)
1897
-20.0 C (-4.0 F)
1898
-13.3 C (8.1 F)
1899
-24.4 C (-11.9 F)
1900
-15.0 C (5.0 F)
1901
-17.8 C (0.0 F)
1902
-12.8 C (9.0 F)
1903
-15.0 C (5.0 F)
1904
-13.3 C (8.1 F)
1905
-19.4 C (-2.9 F)
1906
-11.1 C (12.0 F)
1907
-10.0 C (14.0 F)
1908
-12.2 C (10.0 F)
1909
-15.0 C (5.0 F)
1910
-11.7 C (10.9 F)
1911
-13.3 C (8.1 F)
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
n/a
1955
n/a
1956
n/a
1957
n/a
1958
n/a
1959
n/a
1960
n/a
1961
n/a
1962
n/a
Wettest day (Rx1day)
The wettest day of the year at Harriman, 1893 to 1962. The record is 114.3 mm (4.5 in) in 1903, marked on the chart; the median year is 71.5 mm (2.8 in).
Wettest day (Rx1day) at Harriman by year
Year
Wettest day (Rx1day)
1893
55.6 mm (2.2 in)
1894
49.3 mm (1.9 in)
1895
45.7 mm (1.8 in)
1896
84.8 mm (3.3 in)
1897
108.2 mm (4.3 in)
1898
64.3 mm (2.5 in)
1899
68.6 mm (2.7 in)
1900
79.2 mm (3.1 in)
1901
101.6 mm (4.0 in)
1902
95.3 mm (3.8 in)
1903
114.3 mm (4.5 in)
1904
63.5 mm (2.5 in)
1905
71.1 mm (2.8 in)
1906
66.0 mm (2.6 in)
1907
66.0 mm (2.6 in)
1908
101.6 mm (4.0 in)
1909
73.2 mm (2.9 in)
1910
73.4 mm (2.9 in)
1911
102.9 mm (4.1 in)
1948
100.1 mm (3.9 in)
1949
64.5 mm (2.5 in)
1950
70.1 mm (2.8 in)
1951
87.1 mm (3.4 in)
1952
97.0 mm (3.8 in)
1953
78.7 mm (3.1 in)
1954
95.0 mm (3.7 in)
1955
71.9 mm (2.8 in)
1956
67.3 mm (2.6 in)
1957
68.6 mm (2.7 in)
1958
58.9 mm (2.3 in)
1959
92.2 mm (3.6 in)
1960
69.9 mm (2.8 in)
1961
64.5 mm (2.5 in)
1962
57.2 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Harriman, 1893 to 1962. The record is 230.8 mm (9.1 in) in 1908, marked on the chart; the median year is 121.5 mm (4.8 in).
Wettest five days (Rx5day) at Harriman by year
Year
Wettest five days (Rx5day)
1893
75.4 mm (3.0 in)
1894
95.8 mm (3.8 in)
1895
99.1 mm (3.9 in)
1896
96.5 mm (3.8 in)
1897
168.4 mm (6.6 in)
1898
122.0 mm (4.8 in)
1899
108.0 mm (4.3 in)
1900
94.4 mm (3.7 in)
1901
226.5 mm (8.9 in)
1902
130.9 mm (5.2 in)
1903
149.8 mm (5.9 in)
1904
102.9 mm (4.1 in)
1905
107.1 mm (4.2 in)
1906
106.5 mm (4.2 in)
1907
82.5 mm (3.2 in)
1908
230.8 mm (9.1 in)
1909
108.5 mm (4.3 in)
1910
95.5 mm (3.8 in)
1911
185.0 mm (7.3 in)
1948
130.0 mm (5.1 in)
1949
124.9 mm (4.9 in)
1950
157.5 mm (6.2 in)
1951
159.3 mm (6.3 in)
1952
97.0 mm (3.8 in)
1953
113.7 mm (4.5 in)
1954
137.2 mm (5.4 in)
1955
142.5 mm (5.6 in)
1956
160.1 mm (6.3 in)
1957
188.8 mm (7.4 in)
1958
78.3 mm (3.1 in)
1959
135.9 mm (5.4 in)
1960
99.4 mm (3.9 in)
1961
153.4 mm (6.0 in)
1962
120.9 mm (4.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Harriman, 1893 to 1962. The record is 38 days in 1903, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Harriman by year
Year
Longest dry spell (CDD)
1893
25 days
1894
17 days
1895
16 days
1896
16 days
1897
22 days
1898
15 days
1899
19 days
1900
15 days
1901
22 days
1902
22 days
1903
38 days
1904
22 days
1905
18 days
1906
22 days
1907
21 days
1908
32 days
1909
18 days
1910
22 days
1911
24 days
1948
11 days
1949
11 days
1950
16 days
1951
12 days
1952
30 days
1953
30 days
1954
24 days
1955
17 days
1956
19 days
1957
16 days
1958
13 days
1959
25 days
1960
12 days
1961
18 days
1962
8 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.
Download the Data
Data for Harriman standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Harriman 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.