Record envelope, standing records and threshold days for Renova (USC00246964), Montana, United States, with 35 years of record.
Key Facts for Renova
Renova (USC00246964) is a weather station in Montana, United States at 45.82 latitude and -112.15 longitude, 1,336 m (4,383 ft) above sea level.
The station reports from 1898 to 1932, 35 years of record.
1,464 records set at Renova still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Renova set a daily record low minimum temperature of -23.3 C (-9.9 F) on 15 December 1932.
About the Station
Location: Montana, United States, 45.82 latitude, -112.15 longitude.
Elevation: 1,336 m (4,383 ft).
Period of record: 1898 to 1932, 35 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Renova. 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 Renova, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
18.3 C (64.9 F)
-41.1 C (-42.0 F)
n/a
n/a
Feb
19.4 C (66.9 F)
-37.8 C (-36.0 F)
n/a
n/a
Mar
23.3 C (73.9 F)
-33.9 C (-29.0 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-15.0 C (5.0 F)
n/a
n/a
May
35.0 C (95.0 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
38.3 C (100.9 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
39.4 C (102.9 F)
-1.1 C (30.0 F)
n/a
n/a
Aug
36.7 C (98.1 F)
-6.7 C (19.9 F)
n/a
n/a
Sep
35.6 C (96.1 F)
-12.2 C (10.0 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
23.3 C (73.9 F)
-28.9 C (-20.0 F)
n/a
n/a
Dec
18.3 C (64.9 F)
-37.2 C (-35.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Renova still stand. 1919 holds the most, with 93.
Standing records at Renova by the year they were set
Year set
Standing records
1898
31
1899
61
1900
43
1901
30
1902
29
1903
37
1904
36
1905
32
1906
28
1907
29
1908
32
1909
47
1910
59
1911
39
1912
35
1913
45
1914
28
1915
35
1916
71
1917
56
1918
80
1919
93
1920
40
1921
48
1922
32
1923
21
1924
51
1925
31
1926
46
1927
33
1928
26
1929
36
1930
42
1931
31
1932
51
Wettest Day of Each Month
Jul: 49.0 mm (1.9 in)
The wettest day on record for each calendar month at Renova. The most was 49.0 mm (1.9 in) on 15 July 1907.
Record daily precipitation for each month at Renova
Month
Record daily precipitation (mm)
Date
Jan
17.8 mm (0.7 in)
31 January 1899
Feb
37.3 mm (1.5 in)
12 February 1904
Mar
16.5 mm (0.6 in)
29 March 1912
Apr
32.5 mm (1.3 in)
26 April 1917
May
33.3 mm (1.3 in)
25 May 1917
Jun
37.3 mm (1.5 in)
3 June 1908
Jul
49.0 mm (1.9 in)
15 July 1907
Aug
40.6 mm (1.6 in)
21 August 1915
Sep
41.9 mm (1.6 in)
29 September 1931
Oct
46.7 mm (1.8 in)
21 October 1899
Nov
20.3 mm (0.8 in)
19 November 1898
Dec
20.6 mm (0.8 in)
15 December 1921
Period of Record Coverage
1898 to 1932
Complete yearUnder 90 percent of days
35 years of record at Renova, 1898 to 1932. 5 years have data for under 90 percent of days and are left out of rankings: 1898, 1902, 1903, 1905, 1906.
Cooler than the station meanWarmer than the station mean
One stripe for each of 27 complete years at Renova, 1899 to 1932. Blue stripes are years cooler than the station's own mean of 6.6 C (43.9 F); red stripes are warmer. The coolest year was 1916, at 5.3 C (41.6 F), and the warmest was 1904, at 8.0 C (46.3 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Renova as warming stripes, 1899 to 1932
Year
Annual mean temperature
Difference from the station mean
1899
5.7 C
-0.91 C
1904
8.0 C
+1.36 C
1907
6.3 C
-0.29 C
1908
7.0 C
+0.37 C
1909
6.2 C
-0.44 C
1910
7.3 C
+0.66 C
1912
6.1 C
-0.49 C
1913
6.0 C
-0.59 C
1914
7.2 C
+0.63 C
1915
7.2 C
+0.55 C
1916
5.3 C
-1.27 C
1917
6.8 C
+0.17 C
1918
7.3 C
+0.73 C
1919
6.6 C
+0.01 C
1920
6.4 C
-0.17 C
1921
7.6 C
+0.97 C
1922
5.5 C
-1.08 C
1923
6.5 C
-0.15 C
1924
6.4 C
-0.25 C
1925
7.5 C
+0.92 C
1926
6.8 C
+0.20 C
1927
6.1 C
-0.51 C
1928
6.2 C
-0.42 C
1929
5.7 C
-0.91 C
1930
6.4 C
-0.21 C
1931
7.5 C
+0.90 C
1932
6.7 C
+0.12 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
1898 to 1932
Yearly extremes at Renova: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.4 C (102.9 F)
1901
35.0 C (95.0 F)
35
Coldest night (TNn)
-41.1 C (-42.0 F)
1909
-31.7 C (-25.1 F)
35
Wettest day (Rx1day)
49.0 mm (1.9 in)
1907
24.1 mm (0.9 in)
35
Wettest five days (Rx5day)
93.2 mm (3.7 in)
1908
35.8 mm (1.4 in)
35
Longest dry spell (CDD)
73 days
1904
39 days
35
Hottest day (TXx)
The hottest day of the year at Renova, 1898 to 1932. The record is 39.4 C (102.9 F) in 1901, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Renova by year
Year
Hottest day (TXx)
1898
35.0 C (95.0 F)
1899
35.0 C (95.0 F)
1900
38.9 C (102.0 F)
1901
39.4 C (102.9 F)
1902
33.3 C (91.9 F)
1903
34.4 C (93.9 F)
1904
35.6 C (96.1 F)
1905
34.4 C (93.9 F)
1906
35.6 C (96.1 F)
1907
31.1 C (88.0 F)
1908
36.1 C (97.0 F)
1909
34.4 C (93.9 F)
1910
36.1 C (97.0 F)
1911
33.3 C (91.9 F)
1912
32.2 C (90.0 F)
1913
33.3 C (91.9 F)
1914
34.4 C (93.9 F)
1915
34.4 C (93.9 F)
1916
35.6 C (96.1 F)
1917
37.2 C (99.0 F)
1918
37.8 C (100.0 F)
1919
38.3 C (100.9 F)
1920
34.4 C (93.9 F)
1921
36.7 C (98.1 F)
1922
34.4 C (93.9 F)
1923
34.4 C (93.9 F)
1924
36.1 C (97.0 F)
1925
33.9 C (93.0 F)
1926
36.7 C (98.1 F)
1927
32.2 C (90.0 F)
1928
35.6 C (96.1 F)
1929
34.4 C (93.9 F)
1930
35.6 C (96.1 F)
1931
37.2 C (99.0 F)
1932
33.9 C (93.0 F)
Coldest night (TNn)
The coldest night of the year at Renova, 1898 to 1932. The record is -41.1 C (-42.0 F) in 1909, marked on the chart; the median year is -31.7 C (-25.1 F).
Coldest night (TNn) at Renova by year
Year
Coldest night (TNn)
1898
-26.7 C (-16.1 F)
1899
-34.4 C (-29.9 F)
1900
-28.3 C (-18.9 F)
1901
-25.0 C (-13.0 F)
1902
-31.1 C (-24.0 F)
1903
-21.1 C (-6.0 F)
1904
-26.1 C (-15.0 F)
1905
-35.0 C (-31.0 F)
1906
-22.8 C (-9.0 F)
1907
-34.4 C (-29.9 F)
1908
-27.8 C (-18.0 F)
1909
-41.1 C (-42.0 F)
1910
-35.6 C (-32.1 F)
1911
-28.9 C (-20.0 F)
1912
-32.2 C (-26.0 F)
1913
-33.3 C (-27.9 F)
1914
-37.8 C (-36.0 F)
1915
-27.2 C (-17.0 F)
1916
-37.2 C (-35.0 F)
1917
-30.0 C (-22.0 F)
1918
-33.3 C (-27.9 F)
1919
-37.2 C (-35.0 F)
1920
-33.9 C (-29.0 F)
1921
-27.8 C (-18.0 F)
1922
-31.7 C (-25.1 F)
1923
-28.9 C (-20.0 F)
1924
-36.7 C (-34.1 F)
1925
-20.0 C (-4.0 F)
1926
-30.0 C (-22.0 F)
1927
-36.7 C (-34.1 F)
1928
-27.8 C (-18.0 F)
1929
-35.6 C (-32.1 F)
1930
-37.8 C (-36.0 F)
1931
-23.3 C (-9.9 F)
1932
-34.4 C (-29.9 F)
Wettest day (Rx1day)
The wettest day of the year at Renova, 1898 to 1932. The record is 49.0 mm (1.9 in) in 1907, marked on the chart; the median year is 24.1 mm (0.9 in).
Wettest day (Rx1day) at Renova by year
Year
Wettest day (Rx1day)
1898
36.3 mm (1.4 in)
1899
46.7 mm (1.8 in)
1900
30.7 mm (1.2 in)
1901
23.4 mm (0.9 in)
1902
24.1 mm (0.9 in)
1903
26.9 mm (1.1 in)
1904
37.3 mm (1.5 in)
1905
20.6 mm (0.8 in)
1906
17.0 mm (0.7 in)
1907
49.0 mm (1.9 in)
1908
37.3 mm (1.5 in)
1909
38.1 mm (1.5 in)
1910
23.4 mm (0.9 in)
1911
18.5 mm (0.7 in)
1912
34.8 mm (1.4 in)
1913
18.0 mm (0.7 in)
1914
25.7 mm (1.0 in)
1915
40.6 mm (1.6 in)
1916
27.9 mm (1.1 in)
1917
33.3 mm (1.3 in)
1918
27.9 mm (1.1 in)
1919
22.9 mm (0.9 in)
1920
16.0 mm (0.6 in)
1921
20.6 mm (0.8 in)
1922
23.4 mm (0.9 in)
1923
22.4 mm (0.9 in)
1924
14.0 mm (0.6 in)
1925
21.8 mm (0.9 in)
1926
33.0 mm (1.3 in)
1927
31.8 mm (1.3 in)
1928
15.7 mm (0.6 in)
1929
19.1 mm (0.8 in)
1930
17.5 mm (0.7 in)
1931
41.9 mm (1.6 in)
1932
20.8 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Renova, 1898 to 1932. The record is 93.2 mm (3.7 in) in 1908, marked on the chart; the median year is 35.8 mm (1.4 in).
Wettest five days (Rx5day) at Renova by year
Year
Wettest five days (Rx5day)
1898
44.5 mm (1.8 in)
1899
46.7 mm (1.8 in)
1900
39.6 mm (1.6 in)
1901
27.7 mm (1.1 in)
1902
39.4 mm (1.6 in)
1903
44.0 mm (1.7 in)
1904
37.3 mm (1.5 in)
1905
22.4 mm (0.9 in)
1906
33.3 mm (1.3 in)
1907
71.3 mm (2.8 in)
1908
93.2 mm (3.7 in)
1909
49.3 mm (1.9 in)
1910
29.8 mm (1.2 in)
1911
25.2 mm (1.0 in)
1912
56.1 mm (2.2 in)
1913
38.1 mm (1.5 in)
1914
34.1 mm (1.3 in)
1915
54.1 mm (2.1 in)
1916
33.4 mm (1.3 in)
1917
53.9 mm (2.1 in)
1918
29.5 mm (1.2 in)
1919
18.9 mm (0.7 in)
1920
35.8 mm (1.4 in)
1921
25.6 mm (1.0 in)
1922
29.5 mm (1.2 in)
1923
43.2 mm (1.7 in)
1924
17.8 mm (0.7 in)
1925
43.9 mm (1.7 in)
1926
42.4 mm (1.7 in)
1927
63.0 mm (2.5 in)
1928
23.3 mm (0.9 in)
1929
19.6 mm (0.8 in)
1930
24.6 mm (1.0 in)
1931
18.0 mm (0.7 in)
1932
28.7 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Renova, 1898 to 1932. The record is 73 days in 1904, marked on the chart; the median year is 39 days.
Longest dry spell (CDD) at Renova by year
Year
Longest dry spell (CDD)
1898
26 days
1899
30 days
1900
44 days
1901
30 days
1902
21 days
1903
29 days
1904
73 days
1905
50 days
1906
39 days
1907
43 days
1908
31 days
1909
33 days
1910
34 days
1911
31 days
1912
53 days
1913
40 days
1914
48 days
1915
39 days
1916
39 days
1917
31 days
1918
56 days
1919
41 days
1920
50 days
1921
33 days
1922
45 days
1923
32 days
1924
25 days
1925
30 days
1926
36 days
1927
34 days
1928
57 days
1929
29 days
1930
48 days
1931
40 days
1932
53 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
27 years with a frost
Across 27 years with a frost, the median last spring frost at Renova falls on 3 June and the median first autumn frost on 29 August, which leaves a median of 84 days between them.
Fitted over all years, the growing season changes by +8.1 days per decade at this station.
Frost dates and growing season at Renova
Measure
Median, all years
Earliest period
Recent period (1899 to 1932)
Recent against earliest
Fitted trend
Last spring frost
3 June
n/a
3 June
n/a
+1.6 days per decade
First autumn frost
29 August
n/a
29 August
n/a
+9.7 days per decade
Growing days
84 days
n/a
84 days
n/a
+8.1 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
31 years, 1899 to 1932
A day with at least 25.8 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 59.3 mm (2.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Renova: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
25.8 mm (1.0 in)
5 years
34.8 mm (1.4 in)
10 years
40.8 mm (1.6 in)
25 years
48.2 mm (1.9 in)
50 years
53.8 mm (2.1 in)
Longer than the 31 years of record
100 years
59.3 mm (2.3 in)
Longer than the 31 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, 31 years of values from 1899 to 1932.
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: 49.0 mm (1.9 in) in 1907; 46.7 mm (1.8 in) in 1899; 41.9 mm (1.6 in) in 1931.
Download the Data
Data for Renova standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Renova 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.