Record envelope, standing records and threshold days for Junipine (USC00024508), Arizona, United States, with 48 years of record.
Key Facts for Junipine
Junipine (USC00024508) is a weather station in Arizona, United States at 34.97 latitude and -111.75 longitude, 1,565 m (5,135 ft) above sea level.
The station reports from 1935 to 1982, 48 years of record.
1,464 records set at Junipine still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Junipine tied a daily record low minimum temperature of 8.9 C (48.0 F) on 24 June 1982.
About the Station
Location: Arizona, United States, 34.97 latitude, -111.75 longitude.
Elevation: 1,565 m (5,135 ft).
Period of record: 1935 to 1982, 48 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 Junipine. 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 Junipine, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.8 C (73.0 F)
-21.1 C (-6.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-16.7 C (1.9 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-14.4 C (6.1 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-11.7 C (10.9 F)
n/a
n/a
May
35.0 C (95.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jun
40.6 C (105.1 F)
0.0 C (32.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
5.6 C (42.1 F)
n/a
n/a
Aug
39.4 C (102.9 F)
4.4 C (39.9 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-5.0 C (23.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Junipine still stand. 1979 holds the most, with 54.
Standing records at Junipine by the year they were set
Year set
Standing records
1935
22
1936
50
1937
27
1938
28
1939
47
1940
25
1941
28
1942
28
1943
28
1944
26
1945
28
1946
27
1947
39
1948
21
1949
49
1950
52
1951
33
1952
24
1953
18
1954
28
1955
35
1956
43
1957
38
1958
29
1959
26
1960
38
1961
19
1962
34
1963
34
1964
22
1965
36
1966
19
1967
26
1968
23
1969
26
1970
25
1971
45
1972
44
1973
26
1974
18
1975
35
1976
22
1977
18
1978
45
1979
54
1980
36
1981
15
1982
5
All-Time Record Progression
2 new records
2 all-time records were set at Junipine between 30 January 1979 and 31 January 1979. Each dot is a new record.
When Junipine set new all-time records
Date
Kind
Detail
1979-01-30
Record low minimum temperature
Record low minimum temperature -20.6 C (-5.1 F)
1979-01-31
Record low minimum temperature
Record low minimum temperature -21.1 C (-6.0 F)
Wettest Day of Each Month
Mar: 140.5 mm (5.5 in)
The wettest day on record for each calendar month at Junipine. The most was 140.5 mm (5.5 in) on 3 March 1938.
Record daily precipitation for each month at Junipine
Month
Record daily precipitation (mm)
Date
Jan
77.0 mm (3.0 in)
8 January 1957
Feb
119.6 mm (4.7 in)
7 February 1937
Mar
140.5 mm (5.5 in)
3 March 1938
Apr
57.4 mm (2.3 in)
4 April 1965
May
32.3 mm (1.3 in)
10 May 1944
Jun
50.8 mm (2.0 in)
10 June 1957
Jul
60.7 mm (2.4 in)
22 July 1954
Aug
92.5 mm (3.6 in)
29 August 1951
Sep
134.1 mm (5.3 in)
5 September 1970
Oct
93.5 mm (3.7 in)
5 October 1940
Nov
133.9 mm (5.3 in)
11 November 1978
Dec
114.0 mm (4.5 in)
6 December 1966
Period of Record Coverage
1935 to 1982
Complete yearUnder 90 percent of days
48 years of record at Junipine, 1935 to 1982. 17 years have data for under 90 percent of days and are left out of rankings: 1935, 1940, 1941, 1942, 1943, 1946, 1948, 1949 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 29 complete years at Junipine, 1936 to 1981. Blue stripes are years cooler than the station's own mean of 13.1 C (55.6 F); red stripes are warmer. The coolest year was 1944, at 12.1 C (53.7 F), and the warmest was 1954, at 14.5 C (58.0 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Junipine as warming stripes, 1936 to 1981
Year
Annual mean temperature
Difference from the station mean
1936
13.3 C
+0.21 C
1937
12.3 C
-0.82 C
1938
12.4 C
-0.66 C
1939
13.3 C
+0.21 C
1944
12.1 C
-1.03 C
1947
13.3 C
+0.15 C
1954
14.5 C
+1.37 C
1955
12.8 C
-0.31 C
1956
13.6 C
+0.50 C
1957
13.0 C
-0.13 C
1958
13.9 C
+0.75 C
1959
13.8 C
+0.73 C
1960
13.4 C
+0.29 C
1961
13.1 C
+0.03 C
1962
13.5 C
+0.39 C
1963
13.5 C
+0.42 C
1964
12.4 C
-0.67 C
1965
12.4 C
-0.67 C
1966
13.3 C
+0.19 C
1967
12.9 C
-0.23 C
1971
12.6 C
-0.53 C
1972
13.5 C
+0.38 C
1973
12.8 C
-0.31 C
1974
13.4 C
+0.26 C
1975
12.3 C
-0.82 C
1976
12.8 C
-0.28 C
1977
13.3 C
+0.20 C
1979
12.6 C
-0.49 C
1981
14.0 C
+0.94 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
1935 to 1982
Yearly extremes at Junipine: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1950
37.2 C (99.0 F)
48
Coldest night (TNn)
-21.1 C (-6.0 F)
1979
-12.8 C (9.0 F)
48
Wettest day (Rx1day)
140.5 mm (5.5 in)
1938
55.7 mm (2.2 in)
48
Wettest five days (Rx5day)
265.5 mm (10.5 in)
1966
87.5 mm (3.4 in)
48
Longest dry spell (CDD)
102 days
1972
46 days
48
Hottest day (TXx)
The hottest day of the year at Junipine, 1935 to 1982. The record is 40.6 C (105.1 F) in 1950, marked on the chart; the median year is 37.2 C (99.0 F).
Hottest day (TXx) at Junipine by year
Year
Hottest day (TXx)
1935
37.2 C (99.0 F)
1936
38.3 C (100.9 F)
1937
36.1 C (97.0 F)
1938
37.8 C (100.0 F)
1939
38.9 C (102.0 F)
1940
38.3 C (100.9 F)
1941
34.4 C (93.9 F)
1942
38.3 C (100.9 F)
1943
36.7 C (98.1 F)
1944
36.1 C (97.0 F)
1945
36.1 C (97.0 F)
1946
37.2 C (99.0 F)
1947
36.1 C (97.0 F)
1948
38.3 C (100.9 F)
1949
35.0 C (95.0 F)
1950
40.6 C (105.1 F)
1951
37.8 C (100.0 F)
1952
36.7 C (98.1 F)
1953
37.2 C (99.0 F)
1954
38.9 C (102.0 F)
1955
37.2 C (99.0 F)
1956
38.3 C (100.9 F)
1957
36.7 C (98.1 F)
1958
38.9 C (102.0 F)
1959
36.7 C (98.1 F)
1960
37.8 C (100.0 F)
1961
37.2 C (99.0 F)
1962
37.2 C (99.0 F)
1963
36.1 C (97.0 F)
1964
35.6 C (96.1 F)
1965
35.0 C (95.0 F)
1966
35.0 C (95.0 F)
1967
36.1 C (97.0 F)
1968
35.6 C (96.1 F)
1969
40.0 C (104.0 F)
1970
39.4 C (102.9 F)
1971
38.9 C (102.0 F)
1972
38.9 C (102.0 F)
1973
39.4 C (102.9 F)
1974
37.8 C (100.0 F)
1975
36.1 C (97.0 F)
1976
37.2 C (99.0 F)
1977
38.3 C (100.9 F)
1978
36.1 C (97.0 F)
1979
37.8 C (100.0 F)
1980
37.2 C (99.0 F)
1981
38.9 C (102.0 F)
1982
35.0 C (95.0 F)
Coldest night (TNn)
The coldest night of the year at Junipine, 1935 to 1982. The record is -21.1 C (-6.0 F) in 1979, marked on the chart; the median year is -12.8 C (9.0 F).
Coldest night (TNn) at Junipine by year
Year
Coldest night (TNn)
1935
-8.9 C (16.0 F)
1936
-8.3 C (17.1 F)
1937
-17.8 C (0.0 F)
1938
-10.0 C (14.0 F)
1939
-16.1 C (3.0 F)
1940
-6.7 C (19.9 F)
1941
-13.3 C (8.1 F)
1942
-15.6 C (3.9 F)
1943
-7.8 C (18.0 F)
1944
-11.1 C (12.0 F)
1945
-12.2 C (10.0 F)
1946
-8.9 C (16.0 F)
1947
-16.7 C (1.9 F)
1948
-13.9 C (7.0 F)
1949
-19.4 C (-2.9 F)
1950
-14.4 C (6.1 F)
1951
-12.8 C (9.0 F)
1952
-10.6 C (12.9 F)
1953
-9.4 C (15.1 F)
1954
-8.3 C (17.1 F)
1955
-15.0 C (5.0 F)
1956
-12.2 C (10.0 F)
1957
-11.1 C (12.0 F)
1958
-12.8 C (9.0 F)
1959
-8.3 C (17.1 F)
1960
-16.7 C (1.9 F)
1961
-14.4 C (6.1 F)
1962
-16.7 C (1.9 F)
1963
-16.1 C (3.0 F)
1964
-12.2 C (10.0 F)
1965
-13.9 C (7.0 F)
1966
-14.4 C (6.1 F)
1967
-15.6 C (3.9 F)
1968
-17.2 C (1.0 F)
1969
-12.2 C (10.0 F)
1970
-10.0 C (14.0 F)
1971
-16.1 C (3.0 F)
1972
-10.6 C (12.9 F)
1973
-12.8 C (9.0 F)
1974
-11.7 C (10.9 F)
1975
-17.2 C (1.0 F)
1976
-13.9 C (7.0 F)
1977
-13.9 C (7.0 F)
1978
-18.3 C (-0.9 F)
1979
-21.1 C (-6.0 F)
1980
-6.7 C (19.9 F)
1981
-6.7 C (19.9 F)
1982
-11.7 C (10.9 F)
Wettest day (Rx1day)
The wettest day of the year at Junipine, 1935 to 1982. The record is 140.5 mm (5.5 in) in 1938, marked on the chart; the median year is 55.7 mm (2.2 in).
Wettest day (Rx1day) at Junipine by year
Year
Wettest day (Rx1day)
1935
45.2 mm (1.8 in)
1936
68.1 mm (2.7 in)
1937
119.6 mm (4.7 in)
1938
140.5 mm (5.5 in)
1939
39.1 mm (1.5 in)
1940
93.5 mm (3.7 in)
1941
55.4 mm (2.2 in)
1942
41.9 mm (1.6 in)
1943
27.4 mm (1.1 in)
1944
58.4 mm (2.3 in)
1945
106.7 mm (4.2 in)
1946
50.8 mm (2.0 in)
1947
37.3 mm (1.5 in)
1948
43.2 mm (1.7 in)
1949
67.3 mm (2.6 in)
1950
40.6 mm (1.6 in)
1951
92.5 mm (3.6 in)
1952
69.9 mm (2.8 in)
1953
40.6 mm (1.6 in)
1954
63.5 mm (2.5 in)
1955
55.1 mm (2.2 in)
1956
35.8 mm (1.4 in)
1957
77.0 mm (3.0 in)
1958
72.4 mm (2.9 in)
1959
58.4 mm (2.3 in)
1960
51.3 mm (2.0 in)
1961
51.3 mm (2.0 in)
1962
30.7 mm (1.2 in)
1963
38.6 mm (1.5 in)
1964
30.2 mm (1.2 in)
1965
100.3 mm (3.9 in)
1966
114.0 mm (4.5 in)
1967
41.4 mm (1.6 in)
1968
41.7 mm (1.6 in)
1969
71.6 mm (2.8 in)
1970
134.1 mm (5.3 in)
1971
36.6 mm (1.4 in)
1972
80.0 mm (3.1 in)
1973
34.3 mm (1.4 in)
1974
33.5 mm (1.3 in)
1975
59.2 mm (2.3 in)
1976
70.9 mm (2.8 in)
1977
46.2 mm (1.8 in)
1978
133.9 mm (5.3 in)
1979
55.9 mm (2.2 in)
1980
73.7 mm (2.9 in)
1981
52.8 mm (2.1 in)
1982
56.1 mm (2.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Junipine, 1935 to 1982. The record is 265.5 mm (10.5 in) in 1966, marked on the chart; the median year is 87.5 mm (3.4 in).
Wettest five days (Rx5day) at Junipine by year
Year
Wettest five days (Rx5day)
1935
75.2 mm (3.0 in)
1936
130.5 mm (5.1 in)
1937
134.3 mm (5.3 in)
1938
207.5 mm (8.2 in)
1939
72.0 mm (2.8 in)
1940
108.2 mm (4.3 in)
1941
95.3 mm (3.8 in)
1942
69.6 mm (2.7 in)
1943
70.4 mm (2.8 in)
1944
79.5 mm (3.1 in)
1945
123.7 mm (4.9 in)
1946
79.5 mm (3.1 in)
1947
55.6 mm (2.2 in)
1948
73.1 mm (2.9 in)
1949
129.3 mm (5.1 in)
1950
46.9 mm (1.8 in)
1951
156.8 mm (6.2 in)
1952
72.4 mm (2.9 in)
1953
50.3 mm (2.0 in)
1954
174.0 mm (6.9 in)
1955
66.0 mm (2.6 in)
1956
42.9 mm (1.7 in)
1957
114.9 mm (4.5 in)
1958
92.2 mm (3.6 in)
1959
103.3 mm (4.1 in)
1960
68.8 mm (2.7 in)
1961
63.5 mm (2.5 in)
1962
62.0 mm (2.4 in)
1963
89.0 mm (3.5 in)
1964
80.2 mm (3.2 in)
1965
192.5 mm (7.6 in)
1966
265.5 mm (10.5 in)
1967
71.2 mm (2.8 in)
1968
58.6 mm (2.3 in)
1969
94.2 mm (3.7 in)
1970
161.1 mm (6.3 in)
1971
65.7 mm (2.6 in)
1972
184.1 mm (7.2 in)
1973
79.4 mm (3.1 in)
1974
94.9 mm (3.7 in)
1975
78.5 mm (3.1 in)
1976
168.1 mm (6.6 in)
1977
68.4 mm (2.7 in)
1978
232.7 mm (9.2 in)
1979
102.4 mm (4.0 in)
1980
206.8 mm (8.1 in)
1981
85.9 mm (3.4 in)
1982
123.4 mm (4.9 in)
Longest dry spell (CDD)
The longest dry spell of the year at Junipine, 1935 to 1982. The record is 102 days in 1972, marked on the chart; the median year is 46 days.
Longest dry spell (CDD) at Junipine by year
Year
Longest dry spell (CDD)
1935
53 days
1936
51 days
1937
31 days
1938
72 days
1939
63 days
1940
29 days
1941
29 days
1942
72 days
1943
73 days
1944
63 days
1945
84 days
1946
34 days
1947
44 days
1948
46 days
1949
34 days
1950
58 days
1951
62 days
1952
34 days
1953
50 days
1954
62 days
1955
39 days
1956
61 days
1957
43 days
1958
45 days
1959
35 days
1960
28 days
1961
26 days
1962
33 days
1963
43 days
1964
46 days
1965
28 days
1966
47 days
1967
47 days
1968
25 days
1969
33 days
1970
63 days
1971
46 days
1972
102 days
1973
94 days
1974
95 days
1975
42 days
1976
68 days
1977
49 days
1978
69 days
1979
45 days
1980
45 days
1981
30 days
1982
30 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
29 years with a frost
Across 29 years with a frost, the median last spring frost at Junipine falls on 27 April and the median first autumn frost on 30 October, which leaves a median of 189 days between them.
Fitted over all years, the growing season changes by -1.1 days per decade at this station.
Frost dates and growing season at Junipine
Measure
Median, all years
Earliest period
Recent period (1936 to 1981)
Recent against earliest
Fitted trend
Last spring frost
27 April
n/a
27 April
n/a
+1.4 days per decade
First autumn frost
30 October
n/a
30 October
n/a
+0.3 days per decade
Growing days
189 days
n/a
189 days
n/a
-1.1 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
40 years, 1936 to 1981
A day with at least 56.8 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 183.0 mm (7.2 in) of rain is expected about once in 100 years.
Rainfall return levels at Junipine: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
56.8 mm (2.2 in)
5 years
82.9 mm (3.3 in)
10 years
102.9 mm (4.1 in)
25 years
131.8 mm (5.2 in)
50 years
156.1 mm (6.1 in)
Longer than the 40 years of record
100 years
183.0 mm (7.2 in)
Longer than the 40 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, 40 years of values from 1936 to 1981.
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: 140.5 mm (5.5 in) in 1938; 134.1 mm (5.3 in) in 1970; 133.9 mm (5.3 in) in 1978.
Download the Data
Data for Junipine standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Junipine 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.