Record envelope, standing records and threshold days for Neihart 8 NNW (USC00246008), Montana, United States, with 39 years of record.
Key Facts for Neihart 8 NNW
Neihart 8 NNW (USC00246008) is a weather station in Montana, United States at 47.04 latitude and -110.78 longitude, 1,594 m (5,230 ft) above sea level.
The station reports from 1967 to 2005, 39 years of record.
1,464 records set at Neihart 8 NNW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Neihart 8 NNW set a daily record snowfall of 4.1 cm (1.6 in) on 20 February 2005.
About the Station
Location: Montana, United States, 47.04 latitude, -110.78 longitude.
Elevation: 1,594 m (5,230 ft).
Period of record: 1967 to 2005, 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 Neihart 8 NNW. 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 Neihart 8 NNW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
19.4 C (66.9 F)
-39.4 C (-38.9 F)
n/a
n/a
Feb
17.8 C (64.0 F)
-43.3 C (-45.9 F)
n/a
n/a
Mar
21.7 C (71.1 F)
-34.4 C (-29.9 F)
n/a
n/a
Apr
27.8 C (82.0 F)
-28.3 C (-18.9 F)
n/a
n/a
May
30.0 C (86.0 F)
-11.7 C (10.9 F)
n/a
n/a
Jun
35.6 C (96.1 F)
-7.2 C (19.0 F)
n/a
n/a
Jul
36.1 C (97.0 F)
-2.2 C (28.0 F)
n/a
n/a
Aug
36.1 C (97.0 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-15.6 C (3.9 F)
n/a
n/a
Oct
31.7 C (89.1 F)
-25.0 C (-13.0 F)
n/a
n/a
Nov
22.8 C (73.0 F)
-32.2 C (-26.0 F)
n/a
n/a
Dec
15.6 C (60.1 F)
-42.2 C (-44.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Neihart 8 NNW still stand. 1985 holds the most, with 59.
Standing records at Neihart 8 NNW by the year they were set
Year set
Standing records
1967
11
1968
37
1969
56
1970
26
1971
39
1972
58
1973
31
1974
36
1975
45
1976
27
1977
36
1978
28
1979
24
1980
51
1981
28
1982
32
1983
35
1984
47
1985
59
1986
51
1987
49
1988
40
1989
31
1990
38
1991
38
1992
56
1993
45
1994
37
1995
37
1996
48
1997
34
1998
25
1999
34
2000
34
2001
30
2002
53
2003
55
2004
13
2005
10
All-Time Record Progression
1 new records
1 all-time records were set at Neihart 8 NNW between 4 August 2003 and 4 August 2003. Each dot is a new record.
When Neihart 8 NNW set new all-time records
Date
Kind
Detail
2003-08-04
Record high minimum temperature
Record high minimum temperature 20.0 C (68.0 F)
Wettest Day of Each Month
May: 82.8 mm (3.3 in)
The wettest day on record for each calendar month at Neihart 8 NNW. The most was 82.8 mm (3.3 in) on 25 May 1980.
Record daily precipitation for each month at Neihart 8 NNW
Month
Record daily precipitation (mm)
Date
Jan
37.1 mm (1.5 in)
1 January 1968
Feb
23.6 mm (0.9 in)
25 February 1985
Mar
35.6 mm (1.4 in)
25 March 1995
Apr
43.2 mm (1.7 in)
11 April 1991
May
82.8 mm (3.3 in)
25 May 1980
Jun
60.5 mm (2.4 in)
26 June 1969
Jul
61.0 mm (2.4 in)
10 July 1983
Aug
43.2 mm (1.7 in)
29 August 1993
Sep
47.0 mm (1.9 in)
12 September 1978
Oct
32.3 mm (1.3 in)
12 October 1981
Nov
27.7 mm (1.1 in)
4 November 1993
Dec
44.5 mm (1.8 in)
27 December 2003
Period of Record Coverage
1967 to 2005
Complete yearUnder 90 percent of days
39 years of record at Neihart 8 NNW, 1967 to 2005. 2 years have data for under 90 percent of days and are left out of rankings: 1967, 2005.
Cooler than the station meanWarmer than the station mean
One stripe for each of 36 complete years at Neihart 8 NNW, 1968 to 2004. Blue stripes are years cooler than the station's own mean of 5.5 C (41.8 F); red stripes are warmer. The coolest year was 1975, at 3.6 C (38.4 F), and the warmest was 1992, at 7.0 C (44.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Neihart 8 NNW as warming stripes, 1968 to 2004
Year
Annual mean temperature
Difference from the station mean
1968
4.6 C
-0.88 C
1969
4.7 C
-0.73 C
1970
4.6 C
-0.88 C
1972
4.2 C
-1.25 C
1973
4.8 C
-0.64 C
1974
5.0 C
-0.47 C
1975
3.6 C
-1.90 C
1976
5.6 C
+0.09 C
1977
4.6 C
-0.90 C
1978
3.9 C
-1.57 C
1979
4.6 C
-0.89 C
1980
5.3 C
-0.14 C
1981
6.4 C
+0.91 C
1982
4.0 C
-1.44 C
1983
5.5 C
-0.01 C
1984
5.3 C
-0.18 C
1985
4.2 C
-1.30 C
1986
6.3 C
+0.87 C
1987
7.0 C
+1.52 C
1988
6.5 C
+1.02 C
1989
4.9 C
-0.57 C
1990
6.3 C
+0.80 C
1991
6.0 C
+0.56 C
1992
7.0 C
+1.55 C
1993
5.2 C
-0.30 C
1994
6.9 C
+1.45 C
1995
6.3 C
+0.84 C
1996
4.7 C
-0.78 C
1997
5.7 C
+0.23 C
1998
6.4 C
+0.95 C
1999
6.8 C
+1.33 C
2000
6.0 C
+0.48 C
2001
6.7 C
+1.24 C
2002
5.0 C
-0.46 C
2003
6.4 C
+0.93 C
2004
5.9 C
+0.39 C
The annual mean temperature here has risen by 0.6 C (0.3 to 0.8) per decade over 1968 to 2004. In Fahrenheit: 1.0 F (0.5 to 1.5) per decade. The slope is a straight line fitted to 36 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Neihart 8 NNW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.6 C (0.3 to 0.8) per decade
1.0 F (0.5 to 1.5) per decade
1968 to 2004
36
Rise
Mean daily maximum
0.5 C (0.2 to 0.8) per decade
0.8 F (0.3 to 1.4) per decade
1968 to 2004
36
Rise
Mean daily minimum
0.6 C (0.4 to 0.9) per decade
1.2 F (0.7 to 1.6) per decade
1968 to 2004
36
Rise
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
1967 to 2005
Yearly extremes at Neihart 8 NNW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
36.1 C (97.0 F)
1969
33.3 C (91.9 F)
39
Coldest night (TNn)
-43.3 C (-45.9 F)
1989
-32.8 C (-27.0 F)
39
Wettest day (Rx1day)
82.8 mm (3.3 in)
1980
38.1 mm (1.5 in)
39
Wettest five days (Rx5day)
134.4 mm (5.3 in)
1969
66.3 mm (2.6 in)
39
Longest dry spell (CDD)
38 days
1969
25 days
39
Hottest day (TXx)
The hottest day of the year at Neihart 8 NNW, 1967 to 2005. The record is 36.1 C (97.0 F) in 1969, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Neihart 8 NNW by year
Year
Hottest day (TXx)
1967
33.3 C (91.9 F)
1968
30.6 C (87.1 F)
1969
36.1 C (97.0 F)
1970
33.3 C (91.9 F)
1971
33.9 C (93.0 F)
1972
31.1 C (88.0 F)
1973
34.4 C (93.9 F)
1974
31.7 C (89.1 F)
1975
32.8 C (91.0 F)
1976
32.8 C (91.0 F)
1977
33.9 C (93.0 F)
1978
30.6 C (87.1 F)
1979
33.3 C (91.9 F)
1980
31.7 C (89.1 F)
1981
32.8 C (91.0 F)
1982
30.6 C (87.1 F)
1983
34.4 C (93.9 F)
1984
34.4 C (93.9 F)
1985
34.4 C (93.9 F)
1986
32.2 C (90.0 F)
1987
32.2 C (90.0 F)
1988
35.6 C (96.1 F)
1989
34.4 C (93.9 F)
1990
35.6 C (96.1 F)
1991
35.6 C (96.1 F)
1992
32.8 C (91.0 F)
1993
31.7 C (89.1 F)
1994
33.9 C (93.0 F)
1995
32.8 C (91.0 F)
1996
34.4 C (93.9 F)
1997
31.7 C (89.1 F)
1998
33.9 C (93.0 F)
1999
33.3 C (91.9 F)
2000
34.4 C (93.9 F)
2001
35.6 C (96.1 F)
2002
36.1 C (97.0 F)
2003
36.1 C (97.0 F)
2004
32.8 C (91.0 F)
2005
14.4 C (57.9 F)
Coldest night (TNn)
The coldest night of the year at Neihart 8 NNW, 1967 to 2005. The record is -43.3 C (-45.9 F) in 1989, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Neihart 8 NNW by year
Year
Coldest night (TNn)
1967
-32.2 C (-26.0 F)
1968
-41.1 C (-42.0 F)
1969
-35.6 C (-32.1 F)
1970
-28.3 C (-18.9 F)
1971
-39.4 C (-38.9 F)
1972
-38.3 C (-36.9 F)
1973
-34.4 C (-29.9 F)
1974
-36.7 C (-34.1 F)
1975
-32.8 C (-27.0 F)
1976
-34.4 C (-29.9 F)
1977
-33.3 C (-27.9 F)
1978
-37.2 C (-35.0 F)
1979
-31.7 C (-25.1 F)
1980
-38.9 C (-38.0 F)
1981
-26.7 C (-16.1 F)
1982
-33.3 C (-27.9 F)
1983
-42.2 C (-44.0 F)
1984
-31.7 C (-25.1 F)
1985
-35.0 C (-31.0 F)
1986
-28.3 C (-18.9 F)
1987
-26.1 C (-15.0 F)
1988
-29.4 C (-20.9 F)
1989
-43.3 C (-45.9 F)
1990
-37.2 C (-35.0 F)
1991
-28.9 C (-20.0 F)
1992
-29.4 C (-20.9 F)
1993
-28.9 C (-20.0 F)
1994
-32.8 C (-27.0 F)
1995
-28.9 C (-20.0 F)
1996
-33.3 C (-27.9 F)
1997
-33.9 C (-29.0 F)
1998
-33.9 C (-29.0 F)
1999
-26.7 C (-16.1 F)
2000
-31.1 C (-24.0 F)
2001
-24.4 C (-11.9 F)
2002
-28.9 C (-20.0 F)
2003
-29.4 C (-20.9 F)
2004
-33.9 C (-29.0 F)
2005
-32.2 C (-26.0 F)
Wettest day (Rx1day)
The wettest day of the year at Neihart 8 NNW, 1967 to 2005. The record is 82.8 mm (3.3 in) in 1980, marked on the chart; the median year is 38.1 mm (1.5 in).
Wettest day (Rx1day) at Neihart 8 NNW by year
Year
Wettest day (Rx1day)
1967
46.7 mm (1.8 in)
1968
37.1 mm (1.5 in)
1969
60.5 mm (2.4 in)
1970
47.8 mm (1.9 in)
1971
22.9 mm (0.9 in)
1972
31.8 mm (1.3 in)
1973
33.0 mm (1.3 in)
1974
25.4 mm (1.0 in)
1975
36.1 mm (1.4 in)
1976
35.6 mm (1.4 in)
1977
22.9 mm (0.9 in)
1978
79.5 mm (3.1 in)
1979
53.1 mm (2.1 in)
1980
82.8 mm (3.3 in)
1981
74.7 mm (2.9 in)
1982
39.9 mm (1.6 in)
1983
61.0 mm (2.4 in)
1984
42.9 mm (1.7 in)
1985
40.6 mm (1.6 in)
1986
26.2 mm (1.0 in)
1987
27.7 mm (1.1 in)
1988
63.5 mm (2.5 in)
1989
26.7 mm (1.1 in)
1990
24.9 mm (1.0 in)
1991
43.2 mm (1.7 in)
1992
26.4 mm (1.0 in)
1993
59.9 mm (2.4 in)
1994
21.6 mm (0.9 in)
1995
41.7 mm (1.6 in)
1996
24.4 mm (1.0 in)
1997
35.6 mm (1.4 in)
1998
52.1 mm (2.1 in)
1999
30.2 mm (1.2 in)
2000
39.6 mm (1.6 in)
2001
31.2 mm (1.2 in)
2002
38.1 mm (1.5 in)
2003
44.5 mm (1.8 in)
2004
48.3 mm (1.9 in)
2005
2.5 mm (0.10 in)
Wettest five days (Rx5day)
The wettest five days of the year at Neihart 8 NNW, 1967 to 2005. The record is 134.4 mm (5.3 in) in 1969, marked on the chart; the median year is 66.3 mm (2.6 in).
Wettest five days (Rx5day) at Neihart 8 NNW by year
Year
Wettest five days (Rx5day)
1967
68.8 mm (2.7 in)
1968
75.0 mm (3.0 in)
1969
134.4 mm (5.3 in)
1970
54.1 mm (2.1 in)
1971
33.5 mm (1.3 in)
1972
36.8 mm (1.4 in)
1973
49.0 mm (1.9 in)
1974
52.4 mm (2.1 in)
1975
91.9 mm (3.6 in)
1976
74.9 mm (2.9 in)
1977
47.1 mm (1.9 in)
1978
113.5 mm (4.5 in)
1979
68.6 mm (2.7 in)
1980
98.8 mm (3.9 in)
1981
132.5 mm (5.2 in)
1982
87.6 mm (3.4 in)
1983
73.5 mm (2.9 in)
1984
51.1 mm (2.0 in)
1985
64.0 mm (2.5 in)
1986
53.3 mm (2.1 in)
1987
55.9 mm (2.2 in)
1988
69.1 mm (2.7 in)
1989
45.7 mm (1.8 in)
1990
47.0 mm (1.9 in)
1991
68.4 mm (2.7 in)
1992
66.3 mm (2.6 in)
1993
116.8 mm (4.6 in)
1994
52.6 mm (2.1 in)
1995
70.6 mm (2.8 in)
1996
45.3 mm (1.8 in)
1997
79.9 mm (3.1 in)
1998
98.3 mm (3.9 in)
1999
43.2 mm (1.7 in)
2000
71.6 mm (2.8 in)
2001
63.4 mm (2.5 in)
2002
64.7 mm (2.5 in)
2003
54.1 mm (2.1 in)
2004
72.1 mm (2.8 in)
2005
8.3 mm (0.33 in)
Longest dry spell (CDD)
The longest dry spell of the year at Neihart 8 NNW, 1967 to 2005. The record is 38 days in 1969, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Neihart 8 NNW by year
Year
Longest dry spell (CDD)
1967
31 days
1968
18 days
1969
38 days
1970
32 days
1971
19 days
1972
29 days
1973
28 days
1974
28 days
1975
23 days
1976
31 days
1977
23 days
1978
16 days
1979
19 days
1980
18 days
1981
25 days
1982
15 days
1983
27 days
1984
17 days
1985
28 days
1986
21 days
1987
26 days
1988
26 days
1989
17 days
1990
36 days
1991
22 days
1992
31 days
1993
15 days
1994
26 days
1995
26 days
1996
19 days
1997
19 days
1998
25 days
1999
22 days
2000
22 days
2001
27 days
2002
23 days
2003
37 days
2004
26 days
2005
14 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
36 years with a frost
Across 36 years with a frost, the median last spring frost at Neihart 8 NNW falls on 12 June and the median first autumn frost on 3 September, which leaves a median of 81 days between them.
Fitted over all years, the growing season changes by +10.1 days per decade at this station.
Frost dates and growing season at Neihart 8 NNW
Measure
Median, all years
Earliest period
Recent period (1975 to 2004)
Recent against earliest
Fitted trend
Last spring frost
12 June
n/a
10 June
n/a
-2.4 days per decade
First autumn frost
3 September
n/a
7 September
n/a
+7.7 days per decade
Growing days
81 days
n/a
82 days
n/a
+10.1 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
37 years, 1968 to 2004
A day with at least 37.8 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 101.7 mm (4.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Neihart 8 NNW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
37.8 mm (1.5 in)
5 years
52.4 mm (2.1 in)
10 years
63.0 mm (2.5 in)
25 years
77.5 mm (3.1 in)
50 years
89.2 mm (3.5 in)
Longer than the 37 years of record
100 years
101.7 mm (4.0 in)
Longer than the 37 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, 37 years of values from 1968 to 2004.
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: 82.8 mm (3.3 in) in 1980; 79.5 mm (3.1 in) in 1978; 74.7 mm (2.9 in) in 1981.
Download the Data
Data for Neihart 8 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Neihart 8 NNW 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.