Record envelope, standing records and threshold days for Loweth (USC00245235), Montana, United States, with 34 years of record.
Key Facts for Loweth
Loweth (USC00245235) is a weather station in Montana, United States at 46.37 latitude and -110.70 longitude, 1,769 m (5,804 ft) above sea level.
The station reports from 1926 to 1959, 34 years of record.
1,464 records set at Loweth still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Loweth set a daily record precipitation of 16.0 mm (0.6 in) on 8 July 1959.
About the Station
Location: Montana, United States, 46.37 latitude, -110.70 longitude.
Elevation: 1,769 m (5,804 ft).
Period of record: 1926 to 1959, 34 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 Loweth. 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 Loweth, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Feb
16.7 C (62.1 F)
-41.7 C (-43.1 F)
n/a
n/a
Mar
16.1 C (61.0 F)
-36.1 C (-33.0 F)
n/a
n/a
Apr
26.7 C (80.1 F)
-24.4 C (-11.9 F)
n/a
n/a
May
33.9 C (93.0 F)
-14.4 C (6.1 F)
n/a
n/a
Jun
33.9 C (93.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jul
36.1 C (97.0 F)
-3.9 C (25.0 F)
n/a
n/a
Aug
34.4 C (93.9 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
33.9 C (93.0 F)
-15.6 C (3.9 F)
n/a
n/a
Oct
27.8 C (82.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Nov
18.9 C (66.0 F)
-34.4 C (-29.9 F)
n/a
n/a
Dec
15.0 C (59.0 F)
-38.9 C (-38.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Loweth still stand. 1934 holds the most, with 87.
Standing records at Loweth by the year they were set
Year set
Standing records
1926
23
1927
46
1928
50
1929
39
1930
61
1931
55
1932
63
1933
60
1934
87
1935
40
1936
72
1937
40
1938
32
1939
44
1940
37
1941
29
1942
47
1943
57
1944
26
1945
26
1946
35
1947
41
1948
33
1949
42
1950
60
1951
40
1952
37
1953
38
1954
49
1955
49
1956
29
1957
39
1958
21
1959
17
Wettest Day of Each Month
Jun: 38.1 mm (1.5 in)
The wettest day on record for each calendar month at Loweth. The most was 38.1 mm (1.5 in) on 5 June 1941.
Record daily precipitation for each month at Loweth
Month
Record daily precipitation (mm)
Date
Jan
8.6 mm (0.34 in)
13 January 1928
Feb
20.3 mm (0.8 in)
28 February 1953
Mar
30.5 mm (1.2 in)
16 March 1937
Apr
28.2 mm (1.1 in)
10 April 1943
May
31.8 mm (1.3 in)
19 May 1938
Jun
38.1 mm (1.5 in)
5 June 1941
Jul
32.3 mm (1.3 in)
20 July 1935
Aug
38.1 mm (1.5 in)
2 August 1943
Sep
29.0 mm (1.1 in)
16 September 1947
Oct
32.5 mm (1.3 in)
15 October 1935
Nov
15.7 mm (0.6 in)
4 November 1927
Dec
18.8 mm (0.7 in)
23 December 1955
Period of Record Coverage
1926 to 1959
Complete yearUnder 90 percent of days
34 years of record at Loweth, 1926 to 1959. 3 years have data for under 90 percent of days and are left out of rankings: 1926, 1958, 1959.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Loweth, 1927 to 1957. Blue stripes are years cooler than the station's own mean of 3.4 C (38.1 F); red stripes are warmer. The coolest year was 1951, at 1.8 C (35.2 F), and the warmest was 1934, at 6.0 C (42.9 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at Loweth as warming stripes, 1927 to 1957
Year
Annual mean temperature
Difference from the station mean
1927
2.6 C
-0.81 C
1928
3.1 C
-0.27 C
1929
2.4 C
-0.96 C
1930
3.7 C
+0.33 C
1931
3.8 C
+0.39 C
1932
2.7 C
-0.69 C
1934
6.0 C
+2.67 C
1935
3.6 C
+0.25 C
1936
3.6 C
+0.22 C
1937
3.2 C
-0.22 C
1938
3.8 C
+0.42 C
1939
4.7 C
+1.29 C
1940
4.4 C
+1.07 C
1941
4.1 C
+0.77 C
1942
4.1 C
+0.73 C
1943
3.5 C
+0.12 C
1944
3.0 C
-0.33 C
1945
2.8 C
-0.56 C
1946
3.4 C
+0.06 C
1947
3.1 C
-0.32 C
1948
2.1 C
-1.29 C
1949
2.4 C
-1.02 C
1950
2.5 C
-0.91 C
1951
1.8 C
-1.58 C
1952
3.6 C
+0.23 C
1953
4.7 C
+1.28 C
1954
4.0 C
+0.63 C
1955
2.0 C
-1.40 C
1956
3.5 C
+0.08 C
1957
3.2 C
-0.16 C
The fitted trend in annual mean temperature here over 1927 to 1957 is -0.2 C (-0.6 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.3 F (-1.0 to 0.4) 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 Loweth
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.2 C (-0.6 to 0.2) per decade
-0.3 F (-1.0 to 0.4) per decade
1927 to 1957
30
Not clearly different from zero
Mean daily maximum
-0.2 C (-0.6 to 0.3) per decade
-0.3 F (-1.2 to 0.5) per decade
1927 to 1957
30
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.5 to 0.3) per decade
-0.3 F (-1.0 to 0.5) per decade
1927 to 1957
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
1926 to 1959
Yearly extremes at Loweth: 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)
1934
32.2 C (90.0 F)
34
Coldest night (TNn)
-41.7 C (-43.1 F)
1936
-35.0 C (-31.0 F)
34
Wettest day (Rx1day)
38.1 mm (1.5 in)
1941
24.7 mm (1.0 in)
34
Wettest five days (Rx5day)
77.5 mm (3.1 in)
1938
39.6 mm (1.6 in)
34
Longest dry spell (CDD)
67 days
1954
28 days
34
Hottest day (TXx)
The hottest day of the year at Loweth, 1926 to 1959. The record is 36.1 C (97.0 F) in 1934, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Loweth by year
Year
Hottest day (TXx)
1926
32.2 C (90.0 F)
1927
28.3 C (82.9 F)
1928
32.8 C (91.0 F)
1929
33.3 C (91.9 F)
1930
34.4 C (93.9 F)
1931
35.6 C (96.1 F)
1932
32.2 C (90.0 F)
1933
34.4 C (93.9 F)
1934
36.1 C (97.0 F)
1935
33.3 C (91.9 F)
1936
35.6 C (96.1 F)
1937
34.4 C (93.9 F)
1938
30.0 C (86.0 F)
1939
32.2 C (90.0 F)
1940
34.4 C (93.9 F)
1941
33.3 C (91.9 F)
1942
32.2 C (90.0 F)
1943
31.7 C (89.1 F)
1944
31.1 C (88.0 F)
1945
31.7 C (89.1 F)
1946
31.7 C (89.1 F)
1947
35.0 C (95.0 F)
1948
30.6 C (87.1 F)
1949
33.3 C (91.9 F)
1950
31.7 C (89.1 F)
1951
31.7 C (89.1 F)
1952
30.0 C (86.0 F)
1953
32.8 C (91.0 F)
1954
32.2 C (90.0 F)
1955
32.2 C (90.0 F)
1956
31.7 C (89.1 F)
1957
32.2 C (90.0 F)
1958
29.4 C (84.9 F)
1959
30.6 C (87.1 F)
Coldest night (TNn)
The coldest night of the year at Loweth, 1926 to 1959. The record is -41.7 C (-43.1 F) in 1936, marked on the chart; the median year is -35.0 C (-31.0 F).
Coldest night (TNn) at Loweth by year
Year
Coldest night (TNn)
1926
-33.3 C (-27.9 F)
1927
-37.8 C (-36.0 F)
1928
-37.8 C (-36.0 F)
1929
-35.6 C (-32.1 F)
1930
-38.9 C (-38.0 F)
1931
-28.9 C (-20.0 F)
1932
-38.9 C (-38.0 F)
1933
-38.9 C (-38.0 F)
1934
-27.8 C (-18.0 F)
1935
-37.8 C (-36.0 F)
1936
-41.7 C (-43.1 F)
1937
-35.6 C (-32.1 F)
1938
-32.8 C (-27.0 F)
1939
-35.6 C (-32.1 F)
1940
-33.3 C (-27.9 F)
1941
-31.1 C (-24.0 F)
1942
-35.0 C (-31.0 F)
1943
-36.7 C (-34.1 F)
1944
-30.0 C (-22.0 F)
1945
-35.0 C (-31.0 F)
1946
-28.9 C (-20.0 F)
1947
-30.6 C (-23.1 F)
1948
-32.8 C (-27.0 F)
1949
-37.8 C (-36.0 F)
1950
-35.0 C (-31.0 F)
1951
-37.2 C (-35.0 F)
1952
-34.4 C (-29.9 F)
1953
-25.0 C (-13.0 F)
1954
-38.3 C (-36.9 F)
1955
-34.4 C (-29.9 F)
1956
-34.4 C (-29.9 F)
1957
-37.2 C (-35.0 F)
1958
-26.7 C (-16.1 F)
1959
-35.0 C (-31.0 F)
Wettest day (Rx1day)
The wettest day of the year at Loweth, 1926 to 1959. The record is 38.1 mm (1.5 in) in 1941, marked on the chart; the median year is 24.7 mm (1.0 in).
Wettest day (Rx1day) at Loweth by year
Year
Wettest day (Rx1day)
1926
15.5 mm (0.6 in)
1927
24.9 mm (1.0 in)
1928
18.3 mm (0.7 in)
1929
26.4 mm (1.0 in)
1930
21.6 mm (0.9 in)
1931
22.6 mm (0.9 in)
1932
25.9 mm (1.0 in)
1933
29.2 mm (1.1 in)
1934
20.3 mm (0.8 in)
1935
32.5 mm (1.3 in)
1936
16.0 mm (0.6 in)
1937
30.5 mm (1.2 in)
1938
31.8 mm (1.3 in)
1939
13.5 mm (0.5 in)
1940
21.3 mm (0.8 in)
1941
38.1 mm (1.5 in)
1942
31.2 mm (1.2 in)
1943
38.1 mm (1.5 in)
1944
26.9 mm (1.1 in)
1945
29.2 mm (1.1 in)
1946
26.7 mm (1.1 in)
1947
30.5 mm (1.2 in)
1948
29.2 mm (1.1 in)
1949
15.2 mm (0.6 in)
1950
18.3 mm (0.7 in)
1951
16.5 mm (0.6 in)
1952
25.4 mm (1.0 in)
1953
23.1 mm (0.9 in)
1954
18.0 mm (0.7 in)
1955
30.2 mm (1.2 in)
1956
22.6 mm (0.9 in)
1957
24.4 mm (1.0 in)
1958
13.2 mm (0.5 in)
1959
16.0 mm (0.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Loweth, 1926 to 1959. The record is 77.5 mm (3.1 in) in 1938, marked on the chart; the median year is 39.6 mm (1.6 in).
Wettest five days (Rx5day) at Loweth by year
Year
Wettest five days (Rx5day)
1926
35.1 mm (1.4 in)
1927
57.1 mm (2.2 in)
1928
41.6 mm (1.6 in)
1929
28.3 mm (1.1 in)
1930
39.4 mm (1.6 in)
1931
36.9 mm (1.5 in)
1932
37.3 mm (1.5 in)
1933
49.5 mm (1.9 in)
1934
32.3 mm (1.3 in)
1935
33.8 mm (1.3 in)
1936
35.1 mm (1.4 in)
1937
35.7 mm (1.4 in)
1938
77.5 mm (3.1 in)
1939
34.0 mm (1.3 in)
1940
61.9 mm (2.4 in)
1941
61.7 mm (2.4 in)
1942
39.1 mm (1.5 in)
1943
51.9 mm (2.0 in)
1944
50.1 mm (2.0 in)
1945
47.4 mm (1.9 in)
1946
44.9 mm (1.8 in)
1947
70.2 mm (2.8 in)
1948
56.6 mm (2.2 in)
1949
44.2 mm (1.7 in)
1950
28.2 mm (1.1 in)
1951
29.2 mm (1.1 in)
1952
32.5 mm (1.3 in)
1953
47.7 mm (1.9 in)
1954
39.8 mm (1.6 in)
1955
42.2 mm (1.7 in)
1956
28.4 mm (1.1 in)
1957
46.5 mm (1.8 in)
1958
26.1 mm (1.0 in)
1959
32.7 mm (1.3 in)
Longest dry spell (CDD)
The longest dry spell of the year at Loweth, 1926 to 1959. The record is 67 days in 1954, marked on the chart; the median year is 28 days.
Longest dry spell (CDD) at Loweth by year
Year
Longest dry spell (CDD)
1926
30 days
1927
21 days
1928
21 days
1929
33 days
1930
35 days
1931
41 days
1932
28 days
1933
23 days
1934
35 days
1935
24 days
1936
31 days
1937
26 days
1938
44 days
1939
49 days
1940
29 days
1941
26 days
1942
16 days
1943
35 days
1944
34 days
1945
20 days
1946
19 days
1947
19 days
1948
36 days
1949
25 days
1950
20 days
1951
23 days
1952
33 days
1953
41 days
1954
67 days
1955
19 days
1956
27 days
1957
30 days
1958
25 days
1959
16 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 Loweth falls on 18 June and the median first autumn frost on 14 August, which leaves a median of 56 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 Loweth
Measure
Median, all years
Earliest period
Recent period (1927 to 1957)
Recent against earliest
Fitted trend
Last spring frost
18 June
n/a
18 June
n/a
-1.4 days per decade
First autumn frost
14 August
n/a
14 August
n/a
-1.9 days per decade
Growing days
56 days
n/a
56 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
30 years, 1927 to 1958
A day with at least 24.1 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 40.7 mm (1.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Loweth: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
24.1 mm (0.9 in)
5 years
30.2 mm (1.2 in)
10 years
33.5 mm (1.3 in)
25 years
36.9 mm (1.5 in)
50 years
38.9 mm (1.5 in)
Longer than the 30 years of record
100 years
40.7 mm (1.6 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 1927 to 1958.
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: 38.1 mm (1.5 in) in 1941; 38.1 mm (1.5 in) in 1943; 32.5 mm (1.3 in) in 1935.
Download the Data
Data for Loweth standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Loweth 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.