Record envelope, standing records and threshold days for Little Hills (USC00055048), Colorado, United States, with 46 years of record.
Key Facts for Little Hills
Little Hills (USC00055048) is a weather station in Colorado, United States at 40.00 latitude and -108.20 longitude, 1,872 m (6,140 ft) above sea level.
The station reports from 1946 to 1991, 46 years of record.
1,464 records set at Little Hills still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Little Hills set a daily record precipitation of 20.3 mm (0.8 in) on 21 August 1991.
About the Station
Location: Colorado, United States, 40.00 latitude, -108.20 longitude.
Elevation: 1,872 m (6,140 ft).
Period of record: 1946 to 1991, 46 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 Little Hills. 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 Little Hills, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
16.1 C (61.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Feb
22.2 C (72.0 F)
-44.4 C (-47.9 F)
n/a
n/a
Mar
25.0 C (77.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Apr
27.8 C (82.0 F)
-18.3 C (-0.9 F)
n/a
n/a
May
31.1 C (88.0 F)
-13.3 C (8.1 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-7.8 C (18.0 F)
n/a
n/a
Jul
37.8 C (100.0 F)
-4.4 C (24.1 F)
n/a
n/a
Aug
36.7 C (98.1 F)
-5.0 C (23.0 F)
n/a
n/a
Sep
35.0 C (95.0 F)
-11.1 C (12.0 F)
n/a
n/a
Oct
32.8 C (91.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Nov
21.7 C (71.1 F)
-32.8 C (-27.0 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-41.1 C (-42.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Little Hills still stand. 1947 holds the most, with 53.
Standing records at Little Hills by the year they were set
Year set
Standing records
1946
29
1947
53
1948
51
1949
41
1950
53
1951
26
1952
33
1953
28
1954
27
1955
50
1956
50
1957
15
1958
22
1959
24
1960
42
1961
31
1962
53
1963
38
1964
26
1965
30
1966
29
1967
34
1968
24
1969
38
1970
27
1971
32
1972
53
1973
22
1974
19
1975
22
1976
23
1977
25
1978
40
1979
29
1980
17
1981
18
1982
29
1983
33
1984
39
1985
37
1986
30
1987
28
1988
5
1989
52
1990
28
1991
9
All-Time Record Progression
7 new records
7 all-time records were set at Little Hills between 13 May 1982 and 22 December 1990. Each dot is a new record.
When Little Hills set new all-time records
Date
Kind
Detail
1982-05-13
Record daily precipitation
Record daily precipitation 41.7 mm (1.6 in)
1986-07-06
Record daily precipitation
Record daily precipitation 43.7 mm (1.7 in)
1986-08-06
Record daily precipitation
Record daily precipitation 58.4 mm (2.3 in)
1989-02-06
Record low maximum temperature
Record low maximum temperature -22.2 C (-8.0 F)
1989-07-07
Record high maximum temperature
Record high maximum temperature 37.2 C (99.0 F)
1989-07-08
Record high maximum temperature
Record high maximum temperature 37.8 C (100.0 F)
1990-12-22
Record low maximum temperature
Record low maximum temperature -25.0 C (-13.0 F)
Wettest Day of Each Month
Aug: 58.4 mm (2.3 in)
The wettest day on record for each calendar month at Little Hills. The most was 58.4 mm (2.3 in) on 6 August 1986.
Record daily precipitation for each month at Little Hills
Month
Record daily precipitation (mm)
Date
Jan
21.8 mm (0.9 in)
16 January 1956
Feb
20.3 mm (0.8 in)
24 February 1962
Mar
22.4 mm (0.9 in)
31 March 1974
Apr
32.3 mm (1.3 in)
28 April 1950
May
41.7 mm (1.6 in)
13 May 1982
Jun
31.0 mm (1.2 in)
7 June 1984
Jul
43.7 mm (1.7 in)
6 July 1986
Aug
58.4 mm (2.3 in)
6 August 1986
Sep
38.4 mm (1.5 in)
22 September 1961
Oct
29.7 mm (1.2 in)
2 October 1983
Nov
23.1 mm (0.9 in)
19 November 1973
Dec
29.2 mm (1.1 in)
30 December 1951
Period of Record Coverage
1946 to 1991
Complete yearUnder 90 percent of days
46 years of record at Little Hills, 1946 to 1991. 10 years have data for under 90 percent of days and are left out of rankings: 1946, 1957, 1965, 1980, 1981, 1982, 1988, 1989 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Little Hills, 1947 to 1987. Blue stripes are years cooler than the station's own mean of 5.9 C (42.6 F); red stripes are warmer. The coolest year was 1984, at 3.9 C (39.0 F), and the warmest was 1954, at 7.3 C (45.1 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Little Hills as warming stripes, 1947 to 1987
Year
Annual mean temperature
Difference from the station mean
1947
6.7 C
+0.82 C
1948
5.6 C
-0.28 C
1949
5.8 C
-0.02 C
1950
5.6 C
-0.29 C
1951
5.6 C
-0.22 C
1952
5.1 C
-0.74 C
1953
6.5 C
+0.62 C
1954
7.3 C
+1.42 C
1955
5.3 C
-0.60 C
1958
6.2 C
+0.29 C
1959
6.3 C
+0.42 C
1960
6.4 C
+0.50 C
1961
6.5 C
+0.65 C
1962
6.4 C
+0.57 C
1963
6.7 C
+0.87 C
1964
5.4 C
-0.46 C
1966
5.6 C
-0.24 C
1967
6.7 C
+0.82 C
1968
4.8 C
-1.02 C
1969
6.4 C
+0.51 C
1970
6.2 C
+0.38 C
1971
5.6 C
-0.26 C
1972
6.4 C
+0.54 C
1973
4.9 C
-0.95 C
1975
5.3 C
-0.53 C
1976
5.9 C
+0.08 C
1977
7.1 C
+1.22 C
1978
5.9 C
+0.04 C
1979
5.0 C
-0.87 C
1983
4.9 C
-0.99 C
1984
3.9 C
-1.98 C
1985
5.3 C
-0.61 C
1986
6.7 C
+0.80 C
1987
5.5 C
-0.39 C
The fitted trend in annual mean temperature here over 1947 to 1987 is -0.18 C (-0.39 to 0.04) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.3 F (-0.7 to 0.1) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Little Hills
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.18 C (-0.39 to 0.04) per decade
-0.3 F (-0.7 to 0.1) per decade
1947 to 1987
34
Not clearly different from zero
Mean daily maximum
-0.5 C (-0.7 to -0.2) per decade
-0.8 F (-1.3 to -0.4) per decade
1947 to 1987
34
Fall
Mean daily minimum
0.1 C (-0.2 to 0.4) per decade
0.2 F (-0.3 to 0.7) per decade
1947 to 1987
34
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
1946 to 1991
Yearly extremes at Little Hills: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1989
34.4 C (93.9 F)
46
Coldest night (TNn)
-44.4 C (-47.9 F)
1963
-32.8 C (-27.0 F)
46
Wettest day (Rx1day)
58.4 mm (2.3 in)
1986
23.1 mm (0.9 in)
46
Wettest five days (Rx5day)
74.0 mm (2.9 in)
1961
38.5 mm (1.5 in)
46
Longest dry spell (CDD)
66 days
1956
27 days
46
Hottest day (TXx)
The hottest day of the year at Little Hills, 1946 to 1991. The record is 37.8 C (100.0 F) in 1989, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Little Hills by year
Year
Hottest day (TXx)
1946
36.7 C (98.1 F)
1947
36.7 C (98.1 F)
1948
36.1 C (97.0 F)
1949
34.4 C (93.9 F)
1950
33.9 C (93.0 F)
1951
34.4 C (93.9 F)
1952
33.9 C (93.0 F)
1953
34.4 C (93.9 F)
1954
36.1 C (97.0 F)
1955
34.4 C (93.9 F)
1956
33.3 C (91.9 F)
1957
32.2 C (90.0 F)
1958
32.8 C (91.0 F)
1959
35.0 C (95.0 F)
1960
35.6 C (96.1 F)
1961
34.4 C (93.9 F)
1962
34.4 C (93.9 F)
1963
36.1 C (97.0 F)
1964
34.4 C (93.9 F)
1965
33.9 C (93.0 F)
1966
33.9 C (93.0 F)
1967
32.8 C (91.0 F)
1968
33.3 C (91.9 F)
1969
34.4 C (93.9 F)
1970
33.9 C (93.0 F)
1971
35.0 C (95.0 F)
1972
35.0 C (95.0 F)
1973
33.9 C (93.0 F)
1974
33.3 C (91.9 F)
1975
33.9 C (93.0 F)
1976
35.0 C (95.0 F)
1977
32.8 C (91.0 F)
1978
34.4 C (93.9 F)
1979
35.0 C (95.0 F)
1980
33.3 C (91.9 F)
1981
34.4 C (93.9 F)
1982
34.4 C (93.9 F)
1983
33.9 C (93.0 F)
1984
32.2 C (90.0 F)
1985
34.4 C (93.9 F)
1986
33.3 C (91.9 F)
1987
34.4 C (93.9 F)
1988
32.2 C (90.0 F)
1989
37.8 C (100.0 F)
1990
35.0 C (95.0 F)
1991
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Little Hills, 1946 to 1991. The record is -44.4 C (-47.9 F) in 1963, marked on the chart; the median year is -32.8 C (-27.0 F).
Coldest night (TNn) at Little Hills by year
Year
Coldest night (TNn)
1946
-23.3 C (-9.9 F)
1947
-25.0 C (-13.0 F)
1948
-37.2 C (-35.0 F)
1949
-35.6 C (-32.1 F)
1950
-33.3 C (-27.9 F)
1951
-35.6 C (-32.1 F)
1952
-35.0 C (-31.0 F)
1953
-28.3 C (-18.9 F)
1954
-28.3 C (-18.9 F)
1955
-33.3 C (-27.9 F)
1956
-34.4 C (-29.9 F)
1957
-23.3 C (-9.9 F)
1958
-27.2 C (-17.0 F)
1959
-32.8 C (-27.0 F)
1960
-31.7 C (-25.1 F)
1961
-31.7 C (-25.1 F)
1962
-38.3 C (-36.9 F)
1963
-44.4 C (-47.9 F)
1964
-33.9 C (-29.0 F)
1965
-29.4 C (-20.9 F)
1966
-32.2 C (-26.0 F)
1967
-30.0 C (-22.0 F)
1968
-31.1 C (-24.0 F)
1969
-28.9 C (-20.0 F)
1970
-29.4 C (-20.9 F)
1971
-37.8 C (-36.0 F)
1972
-34.4 C (-29.9 F)
1973
-32.2 C (-26.0 F)
1974
-34.4 C (-29.9 F)
1975
-33.9 C (-29.0 F)
1976
-30.0 C (-22.0 F)
1977
-26.7 C (-16.1 F)
1978
-37.8 C (-36.0 F)
1979
-33.9 C (-29.0 F)
1980
-27.2 C (-17.0 F)
1981
-28.9 C (-20.0 F)
1982
-36.7 C (-34.1 F)
1983
-31.1 C (-24.0 F)
1984
-37.8 C (-36.0 F)
1985
-36.7 C (-34.1 F)
1986
-21.7 C (-7.1 F)
1987
-32.8 C (-27.0 F)
1988
-33.3 C (-27.9 F)
1989
-44.4 C (-47.9 F)
1990
-41.1 C (-42.0 F)
1991
-32.2 C (-26.0 F)
Wettest day (Rx1day)
The wettest day of the year at Little Hills, 1946 to 1991. The record is 58.4 mm (2.3 in) in 1986, marked on the chart; the median year is 23.1 mm (0.9 in).
Wettest day (Rx1day) at Little Hills by year
Year
Wettest day (Rx1day)
1946
27.9 mm (1.1 in)
1947
24.1 mm (0.9 in)
1948
13.5 mm (0.5 in)
1949
19.1 mm (0.8 in)
1950
32.3 mm (1.3 in)
1951
29.2 mm (1.1 in)
1952
32.5 mm (1.3 in)
1953
22.9 mm (0.9 in)
1954
24.4 mm (1.0 in)
1955
26.4 mm (1.0 in)
1956
24.1 mm (0.9 in)
1957
27.9 mm (1.1 in)
1958
13.2 mm (0.5 in)
1959
16.5 mm (0.6 in)
1960
26.2 mm (1.0 in)
1961
38.4 mm (1.5 in)
1962
20.3 mm (0.8 in)
1963
20.3 mm (0.8 in)
1964
20.3 mm (0.8 in)
1965
19.3 mm (0.8 in)
1966
29.0 mm (1.1 in)
1967
24.9 mm (1.0 in)
1968
27.7 mm (1.1 in)
1969
28.7 mm (1.1 in)
1970
20.8 mm (0.8 in)
1971
18.3 mm (0.7 in)
1972
22.9 mm (0.9 in)
1973
23.9 mm (0.9 in)
1974
22.4 mm (0.9 in)
1975
29.5 mm (1.2 in)
1976
23.1 mm (0.9 in)
1977
21.3 mm (0.8 in)
1978
18.0 mm (0.7 in)
1979
23.1 mm (0.9 in)
1980
21.6 mm (0.9 in)
1981
22.6 mm (0.9 in)
1982
41.7 mm (1.6 in)
1983
29.7 mm (1.2 in)
1984
31.0 mm (1.2 in)
1985
21.6 mm (0.9 in)
1986
58.4 mm (2.3 in)
1987
22.9 mm (0.9 in)
1988
18.3 mm (0.7 in)
1989
24.9 mm (1.0 in)
1990
9.1 mm (0.36 in)
1991
20.3 mm (0.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Little Hills, 1946 to 1991. The record is 74.0 mm (2.9 in) in 1961, marked on the chart; the median year is 38.5 mm (1.5 in).
Wettest five days (Rx5day) at Little Hills by year
Year
Wettest five days (Rx5day)
1946
44.1 mm (1.7 in)
1947
38.1 mm (1.5 in)
1948
20.9 mm (0.8 in)
1949
40.2 mm (1.6 in)
1950
32.8 mm (1.3 in)
1951
38.9 mm (1.5 in)
1952
45.0 mm (1.8 in)
1953
54.0 mm (2.1 in)
1954
37.6 mm (1.5 in)
1955
38.4 mm (1.5 in)
1956
33.7 mm (1.3 in)
1957
46.7 mm (1.8 in)
1958
21.5 mm (0.8 in)
1959
25.1 mm (1.0 in)
1960
42.2 mm (1.7 in)
1961
74.0 mm (2.9 in)
1962
43.3 mm (1.7 in)
1963
21.6 mm (0.9 in)
1964
30.2 mm (1.2 in)
1965
30.6 mm (1.2 in)
1966
41.5 mm (1.6 in)
1967
48.3 mm (1.9 in)
1968
43.9 mm (1.7 in)
1969
59.4 mm (2.3 in)
1970
49.8 mm (2.0 in)
1971
25.6 mm (1.0 in)
1972
32.3 mm (1.3 in)
1973
35.2 mm (1.4 in)
1974
45.7 mm (1.8 in)
1975
42.8 mm (1.7 in)
1976
25.2 mm (1.0 in)
1977
30.5 mm (1.2 in)
1978
32.7 mm (1.3 in)
1979
33.2 mm (1.3 in)
1980
31.3 mm (1.2 in)
1981
40.4 mm (1.6 in)
1982
51.8 mm (2.0 in)
1983
40.3 mm (1.6 in)
1984
71.2 mm (2.8 in)
1985
61.0 mm (2.4 in)
1986
71.4 mm (2.8 in)
1987
31.0 mm (1.2 in)
1988
38.6 mm (1.5 in)
1989
34.0 mm (1.3 in)
1990
19.3 mm (0.8 in)
1991
28.0 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Little Hills, 1946 to 1991. The record is 66 days in 1956, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Little Hills by year
Year
Longest dry spell (CDD)
1946
20 days
1947
27 days
1948
30 days
1949
28 days
1950
38 days
1951
32 days
1952
63 days
1953
52 days
1954
26 days
1955
26 days
1956
66 days
1957
42 days
1958
62 days
1959
36 days
1960
22 days
1961
26 days
1962
34 days
1963
28 days
1964
52 days
1965
29 days
1966
27 days
1967
22 days
1968
27 days
1969
24 days
1970
24 days
1971
43 days
1972
22 days
1973
40 days
1974
44 days
1975
26 days
1976
53 days
1977
29 days
1978
31 days
1979
35 days
1980
22 days
1981
19 days
1982
15 days
1983
19 days
1984
25 days
1985
23 days
1986
23 days
1987
30 days
1988
23 days
1989
24 days
1990
20 days
1991
23 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Little Hills falls on 20 June and the median first autumn frost on 27 August, which leaves a median of 68 days between them.
Fitted over all years, the growing season changes by +9.4 days per decade at this station.
Frost dates and growing season at Little Hills
Measure
Median, all years
Earliest period
Recent period (1951 to 1987)
Recent against earliest
Fitted trend
Last spring frost
20 June
n/a
20 June
n/a
-2.4 days per decade
First autumn frost
27 August
n/a
29 August
n/a
+7.0 days per decade
Growing days
68 days
n/a
69 days
n/a
+9.4 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
41 years, 1947 to 1989
A day with at least 23.7 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 51.8 mm (2.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Little Hills: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
23.7 mm (0.9 in)
5 years
30.0 mm (1.2 in)
10 years
34.7 mm (1.4 in)
25 years
41.1 mm (1.6 in)
50 years
46.2 mm (1.8 in)
Longer than the 41 years of record
100 years
51.8 mm (2.0 in)
Longer than the 41 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, 41 years of values from 1947 to 1989.
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: 58.4 mm (2.3 in) in 1986; 41.7 mm (1.6 in) in 1982; 38.4 mm (1.5 in) in 1961.
Download the Data
Data for Little Hills standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Little Hills 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.