Record envelope, standing records and threshold days for Nohly 4 NW (USC00246138), Montana, United States, with 31 years of record.
Key Facts for Nohly 4 NW
Nohly 4 NW (USC00246138) is a weather station in Montana, United States at 48.03 latitude and -104.13 longitude, 580 m (1,903 ft) above sea level.
The station reports from 1951 to 1981, 31 years of record.
1,464 records set at Nohly 4 NW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Nohly 4 NW set a daily record low minimum temperature of -13.3 C (8.1 F) on 23 October 1981.
About the Station
Location: Montana, United States, 48.03 latitude, -104.13 longitude.
Elevation: 580 m (1,903 ft).
Period of record: 1951 to 1981, 31 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 Nohly 4 NW. 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 Nohly 4 NW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.3 C (55.9 F)
-45.0 C (-49.0 F)
n/a
n/a
Feb
17.8 C (64.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Mar
26.1 C (79.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Apr
35.0 C (95.0 F)
-28.9 C (-20.0 F)
n/a
n/a
May
40.6 C (105.1 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
38.3 C (100.9 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
41.7 C (107.1 F)
1.1 C (34.0 F)
n/a
n/a
Aug
42.2 C (108.0 F)
-1.1 C (30.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
-10.6 C (12.9 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-17.8 C (0.0 F)
n/a
n/a
Nov
24.4 C (75.9 F)
-33.9 C (-29.0 F)
n/a
n/a
Dec
17.2 C (63.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Nohly 4 NW still stand. 1951 holds the most, with 75.
Standing records at Nohly 4 NW by the year they were set
Year set
Standing records
1951
75
1952
39
1953
47
1954
63
1955
39
1956
49
1957
48
1958
54
1959
58
1960
45
1961
44
1962
62
1963
53
1964
49
1965
62
1966
58
1967
40
1968
52
1969
53
1970
31
1971
29
1972
58
1973
44
1974
43
1975
34
1976
36
1977
43
1978
28
1979
47
1980
48
1981
33
Wettest Day of Each Month
Aug: 88.4 mm (3.5 in)
The wettest day on record for each calendar month at Nohly 4 NW. The most was 88.4 mm (3.5 in) on 23 August 1968.
Record daily precipitation for each month at Nohly 4 NW
Month
Record daily precipitation (mm)
Date
Jan
13.5 mm (0.5 in)
1 January 1954
Feb
15.5 mm (0.6 in)
26 February 1958
Mar
14.2 mm (0.6 in)
23 March 1975
Apr
45.0 mm (1.8 in)
20 April 1967
May
67.6 mm (2.7 in)
6 May 1965
Jun
48.5 mm (1.9 in)
26 June 1959
Jul
46.7 mm (1.8 in)
6 July 1962
Aug
88.4 mm (3.5 in)
23 August 1968
Sep
63.5 mm (2.5 in)
5 September 1971
Oct
44.2 mm (1.7 in)
2 October 1971
Nov
11.9 mm (0.5 in)
12 November 1980
Dec
10.9 mm (0.4 in)
31 December 1975
Period of Record Coverage
1951 to 1981
Complete yearUnder 90 percent of days
31 years of record at Nohly 4 NW, 1951 to 1981. 1 years have data for under 90 percent of days and are left out of rankings: 1981.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Nohly 4 NW, 1951 to 1980. Blue stripes are years cooler than the station's own mean of 5.1 C (41.1 F); red stripes are warmer. The coolest year was 1951, at 2.3 C (36.2 F), and the warmest was 1953, at 6.8 C (44.2 F). The strongest colour marks a difference of 2.8 C (5.0 F).
Annual mean temperature at Nohly 4 NW as warming stripes, 1951 to 1980
Year
Annual mean temperature
Difference from the station mean
1951
2.3 C
-2.74 C
1952
5.4 C
+0.31 C
1953
6.8 C
+1.72 C
1954
5.6 C
+0.50 C
1955
4.3 C
-0.72 C
1956
5.3 C
+0.28 C
1957
5.5 C
+0.41 C
1958
5.8 C
+0.79 C
1959
4.8 C
-0.26 C
1960
5.2 C
+0.16 C
1961
6.1 C
+1.05 C
1962
5.5 C
+0.45 C
1963
6.6 C
+1.53 C
1964
5.0 C
-0.01 C
1965
3.6 C
-1.45 C
1966
4.3 C
-0.74 C
1967
4.9 C
-0.12 C
1968
4.8 C
-0.21 C
1969
4.7 C
-0.33 C
1970
4.4 C
-0.69 C
1971
5.0 C
-0.10 C
1972
3.8 C
-1.25 C
1973
6.2 C
+1.15 C
1974
5.3 C
+0.24 C
1975
4.7 C
-0.33 C
1976
5.9 C
+0.87 C
1977
5.9 C
+0.81 C
1978
4.0 C
-1.04 C
1979
3.8 C
-1.27 C
1980
6.1 C
+1.08 C
The fitted trend in annual mean temperature here over 1951 to 1980 is -0.03 C (-0.46 to 0.40) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.8 to 0.7) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Nohly 4 NW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.03 C (-0.46 to 0.40) per decade
-0.1 F (-0.8 to 0.7) per decade
1951 to 1980
30
Not clearly different from zero
Mean daily maximum
0.05 C (-0.43 to 0.53) per decade
0.1 F (-0.8 to 1.0) per decade
1951 to 1980
30
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.5 to 0.3) per decade
-0.2 F (-1.0 to 0.6) per decade
1951 to 1980
30
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
1951 to 1981
Yearly extremes at Nohly 4 NW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.2 C (108.0 F)
1958
38.9 C (102.0 F)
31
Coldest night (TNn)
-45.0 C (-49.0 F)
1954
-37.2 C (-35.0 F)
31
Wettest day (Rx1day)
88.4 mm (3.5 in)
1968
37.1 mm (1.5 in)
31
Wettest five days (Rx5day)
114.6 mm (4.5 in)
1965
54.1 mm (2.1 in)
31
Longest dry spell (CDD)
80 days
1952
41 days
31
Hottest day (TXx)
The hottest day of the year at Nohly 4 NW, 1951 to 1981. The record is 42.2 C (108.0 F) in 1958, marked on the chart; the median year is 38.9 C (102.0 F).
Hottest day (TXx) at Nohly 4 NW by year
Year
Hottest day (TXx)
1951
40.0 C (104.0 F)
1952
39.4 C (102.9 F)
1953
37.2 C (99.0 F)
1954
36.7 C (98.1 F)
1955
38.9 C (102.0 F)
1956
38.3 C (100.9 F)
1957
38.3 C (100.9 F)
1958
42.2 C (108.0 F)
1959
39.4 C (102.9 F)
1960
41.7 C (107.1 F)
1961
38.3 C (100.9 F)
1962
36.7 C (98.1 F)
1963
40.6 C (105.1 F)
1964
40.6 C (105.1 F)
1965
38.3 C (100.9 F)
1966
39.4 C (102.9 F)
1967
37.2 C (99.0 F)
1968
36.7 C (98.1 F)
1969
38.3 C (100.9 F)
1970
37.2 C (99.0 F)
1971
39.4 C (102.9 F)
1972
36.7 C (98.1 F)
1973
38.9 C (102.0 F)
1974
38.9 C (102.0 F)
1975
39.4 C (102.9 F)
1976
41.7 C (107.1 F)
1977
36.1 C (97.0 F)
1978
40.6 C (105.1 F)
1979
38.3 C (100.9 F)
1980
41.7 C (107.1 F)
1981
40.6 C (105.1 F)
Coldest night (TNn)
The coldest night of the year at Nohly 4 NW, 1951 to 1981. The record is -45.0 C (-49.0 F) in 1954, marked on the chart; the median year is -37.2 C (-35.0 F).
Coldest night (TNn) at Nohly 4 NW by year
Year
Coldest night (TNn)
1951
-43.3 C (-45.9 F)
1952
-34.4 C (-29.9 F)
1953
-32.2 C (-26.0 F)
1954
-45.0 C (-49.0 F)
1955
-35.6 C (-32.1 F)
1956
-36.1 C (-33.0 F)
1957
-38.3 C (-36.9 F)
1958
-35.6 C (-32.1 F)
1959
-43.3 C (-45.9 F)
1960
-32.2 C (-26.0 F)
1961
-34.4 C (-29.9 F)
1962
-44.4 C (-47.9 F)
1963
-34.4 C (-29.9 F)
1964
-33.9 C (-29.0 F)
1965
-38.9 C (-38.0 F)
1966
-35.6 C (-32.1 F)
1967
-37.8 C (-36.0 F)
1968
-40.0 C (-40.0 F)
1969
-41.1 C (-42.0 F)
1970
-38.3 C (-36.9 F)
1971
-34.4 C (-29.9 F)
1972
-38.3 C (-36.9 F)
1973
-36.7 C (-34.1 F)
1974
-41.7 C (-43.1 F)
1975
-33.9 C (-29.0 F)
1976
-39.4 C (-38.9 F)
1977
-37.8 C (-36.0 F)
1978
-36.7 C (-34.1 F)
1979
-37.2 C (-35.0 F)
1980
-40.0 C (-40.0 F)
1981
-31.7 C (-25.1 F)
Wettest day (Rx1day)
The wettest day of the year at Nohly 4 NW, 1951 to 1981. The record is 88.4 mm (3.5 in) in 1968, marked on the chart; the median year is 37.1 mm (1.5 in).
Wettest day (Rx1day) at Nohly 4 NW by year
Year
Wettest day (Rx1day)
1951
12.2 mm (0.5 in)
1952
50.8 mm (2.0 in)
1953
49.3 mm (1.9 in)
1954
38.1 mm (1.5 in)
1955
34.3 mm (1.4 in)
1956
37.1 mm (1.5 in)
1957
28.2 mm (1.1 in)
1958
27.9 mm (1.1 in)
1959
48.5 mm (1.9 in)
1960
52.3 mm (2.1 in)
1961
35.8 mm (1.4 in)
1962
46.7 mm (1.8 in)
1963
31.2 mm (1.2 in)
1964
29.7 mm (1.2 in)
1965
67.6 mm (2.7 in)
1966
21.6 mm (0.9 in)
1967
45.0 mm (1.8 in)
1968
88.4 mm (3.5 in)
1969
38.4 mm (1.5 in)
1970
30.2 mm (1.2 in)
1971
63.5 mm (2.5 in)
1972
38.6 mm (1.5 in)
1973
36.3 mm (1.4 in)
1974
45.2 mm (1.8 in)
1975
27.4 mm (1.1 in)
1976
27.7 mm (1.1 in)
1977
28.7 mm (1.1 in)
1978
54.4 mm (2.1 in)
1979
16.3 mm (0.6 in)
1980
37.1 mm (1.5 in)
1981
29.2 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Nohly 4 NW, 1951 to 1981. The record is 114.6 mm (4.5 in) in 1965, marked on the chart; the median year is 54.1 mm (2.1 in).
Wettest five days (Rx5day) at Nohly 4 NW by year
Year
Wettest five days (Rx5day)
1951
21.3 mm (0.8 in)
1952
50.8 mm (2.0 in)
1953
70.9 mm (2.8 in)
1954
43.7 mm (1.7 in)
1955
67.3 mm (2.6 in)
1956
44.5 mm (1.8 in)
1957
35.3 mm (1.4 in)
1958
29.7 mm (1.2 in)
1959
61.2 mm (2.4 in)
1960
57.6 mm (2.3 in)
1961
62.6 mm (2.5 in)
1962
58.7 mm (2.3 in)
1963
55.4 mm (2.2 in)
1964
44.7 mm (1.8 in)
1965
114.6 mm (4.5 in)
1966
44.2 mm (1.7 in)
1967
64.5 mm (2.5 in)
1968
89.4 mm (3.5 in)
1969
90.2 mm (3.6 in)
1970
52.0 mm (2.0 in)
1971
71.9 mm (2.8 in)
1972
42.9 mm (1.7 in)
1973
86.9 mm (3.4 in)
1974
63.4 mm (2.5 in)
1975
54.1 mm (2.1 in)
1976
38.6 mm (1.5 in)
1977
41.9 mm (1.6 in)
1978
81.1 mm (3.2 in)
1979
22.4 mm (0.9 in)
1980
42.7 mm (1.7 in)
1981
36.3 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Nohly 4 NW, 1951 to 1981. The record is 80 days in 1952, marked on the chart; the median year is 41 days.
Longest dry spell (CDD) at Nohly 4 NW by year
Year
Longest dry spell (CDD)
1951
32 days
1952
80 days
1953
33 days
1954
68 days
1955
41 days
1956
41 days
1957
30 days
1958
43 days
1959
56 days
1960
71 days
1961
31 days
1962
44 days
1963
62 days
1964
54 days
1965
51 days
1966
51 days
1967
26 days
1968
37 days
1969
46 days
1970
57 days
1971
46 days
1972
24 days
1973
35 days
1974
35 days
1975
40 days
1976
34 days
1977
45 days
1978
37 days
1979
27 days
1980
26 days
1981
34 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Nohly 4 NW falls on 20 May and the median first autumn frost on 14 September, which leaves a median of 114 days between them.
Fitted over all years, the growing season changes by -2.7 days per decade at this station.
Frost dates and growing season at Nohly 4 NW
Measure
Median, all years
Earliest period
Recent period (1951 to 1980)
Recent against earliest
Fitted trend
Last spring frost
20 May
n/a
20 May
n/a
-2.5 days per decade
First autumn frost
14 September
n/a
14 September
n/a
-5.2 days per decade
Growing days
114 days
n/a
114 days
n/a
-2.7 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
30 years, 1951 to 1980
A day with at least 37.0 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 89.5 mm (3.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Nohly 4 NW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
37.0 mm (1.5 in)
5 years
51.0 mm (2.0 in)
10 years
60.2 mm (2.4 in)
25 years
72.0 mm (2.8 in)
50 years
80.7 mm (3.2 in)
Longer than the 30 years of record
100 years
89.5 mm (3.5 in)
Longer than the 30 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, 30 years of values from 1951 to 1980.
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: 88.4 mm (3.5 in) in 1968; 67.6 mm (2.7 in) in 1965; 63.5 mm (2.5 in) in 1971.
Download the Data
Data for Nohly 4 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Nohly 4 NW 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.