| June 2009
climate report for Tucson |
| |
| June
2009 headlines |
Decade
of 2000s headlines |
| Coolest
June since 1998 |
Warmest
June decade on record |
| No high
temperature of 105° or greater |
4th wettest
June decade on record |
| 5th
warmest January-June period on record |
|
| |
| Tucsonans
should have no complaints about the temperatures that were experienced
during June 2009, especially after the 2nd warmest May on record.
Thanks to a persistent area of low pressure over southern California
during most of the month, Tucson recorded its first below normal June
since 1998 (81.8°). Monsoonal flow developed during the second
half of the month with some strong storms hitting the area toward
the end of June. |
| |
|
The persistent
area of low pressure over southern California had a direct influence
on the daily high temperatures during the first 21 days of the month.
Starting on the 5th and concluding on the 21st, the high temperature
didn't break the century mark, a streak of 17 days which is the
fourth longest streak for June. Below is a listing of the top June
streaks with sub-100 high temperatures.
|
| |
| Longest
June streaks with high temperature less than 100 degrees. |
| Rank |
#
of days |
Year/Dates |
Average
high temperature |
| 1T) |
21 |
1965
(6/1-21) |
92.1° |
| 21 |
1905
(6/1-21) |
91.1° |
| 3) |
18 |
1962
(6/1-18) |
93.3° |
| 4T) |
17 |
2009
(6/5-21) |
93.9° |
| 17 |
1913
(6/1-17) |
95.0° |
| 17 |
1907
(6/1-17) |
92.8° |
|
| |
| The
high temperature of 103 degrees on the 22nd was the first day since
the 4th that a high temperature was above normal, a streak of 17 days.
Below is a listing of the longest streaks (10 days or greater) of
below normal high temperatures since 2002 (in chronological order
from present to past). |
| |
| 17
days |
2009:
June 5 to June 21 |
| 20
days |
2007:
July 20 to August 8 |
| 17
days |
2006:
September 2 to September 18 |
| 10
days |
2006:
August 9 to August 18 |
| 11
days |
2006:
July 26 to August 5 |
| 13
days |
2005:
August 7 to August 19 |
| 12
days |
2005:
June 2 to June 13 |
| 14
days |
2005:
January 26 to February 8 |
| 14
days |
2004:
October 21 to November 3 |
| 12
days |
2004:
August 14 to August 25 |
| 15
days |
2004:
January 31st to February 14 |
| 10
days |
2004:
January 20 to January 29 |
| 10
days |
2003:
February 25 to March 6 |
|
| |
| Monsoonal
flow start to increase during the latter part of the month, with thunderstorms
moving through the area over the last days of the month. As is typical
during monsoon onset, a few storms were severe and produced some damage,
especially on the 28th. |
| |
| June
2009 goes into the record books as the first June since 1998 to be
below normal with an average monthly temperature of 82.9 degrees,
which is 1.2 degrees below normal. Temperature extremes for the month
ranged from a record high of 104 degrees on the 23rd and 24th to a
low of 60 degrees on the 12th. One record temperature was tied during
June. That occurred on the 19th when, thanks to clouds and showers,
the high was only 83 degrees, which tied the record previously set
way back in 1921. This was the coolest high temperature during June
for Tucson since 1997 when 82 degrees was recorded on the 7th. |
| |
| On
average Tucson hits triple digits 18 times during June. In 2009, only
10 days hit triple digits which is the lowest amount since 1984 when
only 9 days were recorded. This is also the first June time since
1984, and ninth time on record, that June didn't record a high temperature
of 105 degrees or greater (2009/1984/1983/1975/1965/1964/1963/1947/1905).
Below is a table that shows the high temperature breakdown since 2000. |
| |
| Year |
80°-89° |
90°-94° |
95°-99° |
100°-104° |
105°+ |
| 2000 |
2 |
6 |
8 |
10 |
4 |
| 2001 |
0 |
3 |
6 |
13 |
8 |
| 2002 |
0 |
2 |
4 |
5 |
19 |
| 2003 |
0 |
2 |
8 |
13 |
7 |
| 2004 |
0 |
3 |
8 |
15 |
4 |
| 2005 |
0 |
9 |
4 |
6 |
11 |
| 2006 |
0 |
0 |
4 |
18 |
8 |
| 2007 |
2 |
2 |
6 |
10 |
10 |
| 2008 |
1 |
0 |
9 |
7 |
13 |
| 2009 |
1 |
9 |
10 |
10 |
0 |
|
| |
|
Area rainfall
totals for the month ranged from a trace to a half an inch, with
localized totals between three-quarters of an inch to 1.33"
being recorded in the Catalina foothills. Officially, the International
airport recorded a hundredth of an inch which is well below the
normal of 0.24".
|
| |
| June
2009 stats |
Month
|
Normal
|
Departure
|
| Average
high temperature |
96.8°
|
100.2°
|
-
3.4°
|
| Average
low temperature |
68.9°
|
68.0°
|
+
0.9°
|
| Average
temperature |
82.9°
|
84.1°
|
-
1.2°
|
| Number
of 100+ degree highs |
10
|
18
|
-
8
|
| Rainfall |
0.01"
|
0.24"
|
-
0.23"
|
|
| |
| 2009
stats thru June |
Year
|
Normal
|
Departure
|
| Average
high temperature |
82.3°
|
79.7°
|
+
2.6°
|
| Average
low temperature |
53.2°
|
50.4°
|
+
2.8°
|
| Average
temperature |
67.8°
|
65.1°
|
+
2.7°
|
| Number
of 100+ degree highs |
18
|
21
|
-3
|
| Rainfall |
2.34"
|
3.44"
|
-
1.10"
|
| 2008-09
Water Year rainfall (Oct-June) |
3.66"
|
6.35"
|
-
2.69"
|
| |
|
|
|
|
| The
first half of 2009 goes into the records books as the 5th warmest
on record with an average temperature of 67.7 degrees. The warmest
January to June period occurred in 1986 when the average temperature
was 68.7 degrees. The 2008-2009 water year rainfall total at the airport
is currently 2.69 inches below normal. This ranks as the 31st driest
water year to date. |
| |
June decade in review: the 2000s
|
|
The month of
June during the decade of the 2000s will go into the record books
as the warmest and 4th wettest decade on record (dating
back to the mid-1890s). The decadal average temperature of 85.8
degrees is 1.1 degrees warmer than the 1990s. Thanks to the 1.56"
of rain that was recorded in 2000, the average decadal precipitation
of 0.28" doubles what the airport recorded in the 1990s.
|
| Decadal
average temperatures |
| 2000s |
1990s |
1980s |
1970s |
1960s |
1950s |
1940s |
1930s |
1920s |
1910s |
1900s |
| 85.9° |
84.8° |
84.7° |
83.2° |
81.6° |
83.7° |
82.3° |
81.7° |
81.2° |
81.9° |
80.4° |
| Decadal
average precipitation |
| 2000s |
1990s |
1980s |
1970s |
1960s |
1950s |
1940s |
1930s |
1920s |
1910s |
1900s |
| 0.28" |
0.14" |
0.21" |
0.24" |
0.12" |
0.41" |
0.15" |
0.41" |
0.27" |
0.31" |
0.15" |
|
| |
|
2006 (88.4°),
2002 (88.0°) and 2008 (87.0°) are ranked as the 3rd,
4th and 6th warmest June's on
record respectively. No rain was recorded at the International airport
in 2002 (0.00").
|
| Year-by-year
statistical recap for Tucson International airport |
| Year |
Avg.
high |
Avg.
Low |
Avg.
Temp |
Precip. |
| 2000 |
98.0° |
71.2° |
84.6° |
1.56" |
| 2001 |
101.2° |
69.9° |
85.6° |
0.54" |
| 2002 |
103.8° |
72.1° |
88.0° |
0.00" |
| 2003 |
101.0° |
70.4° |
85.7° |
Trace |
| 2004 |
100.1° |
69.5° |
84.8° |
Trace |
| 2005 |
100.3° |
71.0° |
85.7° |
0.01" |
| 2006 |
102.4° |
74.3° |
88.4° |
0.50" |
| 2007 |
101.5° |
70.5° |
86.0° |
Trace |
| 2008 |
102.5° |
71.5° |
87.0° |
0.16" |
| 2009 |
96.8° |
68.9° |
82.9° |
0.01" |
| 2000s
avg. |
100.8° |
70.9° |
85.9° |
0.28" |
| 1971-2000
normal |
100.2° |
68.0° |
84.1° |
0.24" |
| Click
on a year for full climate report previously posted. |
|
| |
|
The first two
graphs below shows the daily departure from normal, or periods of
warm/cold, for each June day from 2000 through 2009. The third graph
is the departure from normal for the monthly average temperatures.
The fourth graph is the departure from normal for the monthly rainfall.
(all years compared against 1971-2000 normals except 2000/2001 which
were compared to 1961-1990 normals).
|
|
[Daily
highs] [Daily
lows] [June
average temperatures] [June
precipitation] |
| Move
your mouse over the locations to change graphics. Click link for larger
view. |
 |
| |
|
Temperature
extremes for the decade ranged from 111 degrees on June 21,
2008 to 58 degrees
on June 10, 2004). Thirteen record temperatures were set/tied
this past decade (listing below is in chronological order). However,
none of these 13 records were a daily low.
The last record low temperature set at the International airport
during June was back in 1965 (57° on the 27th).
|
|
|
|
|
|
| Record
type |
Date |
Record |
Previous |
Year(s) |
| High
Minimum |
June
6, 2000 |
80° |
76° |
1895 |
| High
Minimum |
June
8, 2000 |
78° |
75° |
1996/1912 |
| High |
June
1, 2002 |
105°
(tied) |
105° |
1997/1938 |
| High
Minimum |
June
26, 2002 |
82° |
81° |
1970 |
| High |
June
2, 2004 |
105°
(tied) |
105° |
1994/1956 |
| High |
June
20, 2005 |
110° |
109° |
1993/1990/1968 |
| High
Minimum |
June
21, 2005 |
82°
(tied) |
82° |
1996 |
| High
Minimum |
June
22, 2005 |
83° |
82° |
1970/1954/1902 |
| High
Minimum |
June
2, 2006 |
80° |
77° |
1977 |
| High
Minimum |
June
5, 2006 |
79° |
76° |
1957 |
| High
Minimum |
June
24, 2006 |
82° |
81° |
1990/1984/1931 |
| High |
June
17, 2008 |
109°
(tied) |
109° |
1989/1985/1917 |
| Low
Maximum |
June
19, 2009 |
83°
(tied) |
83° |
1921 |
|
| |
| Three
rainfall record were set during the 2000s |
| Date |
Record |
Previous
/ Year |
| June 20,
2001 |
0.33" |
0.07"
/ 1925 |
| June 6,
2006 |
0.31" |
0.08"
/ 1987 |
|
| |
| Looking
ahead into July |
| The
Climate Prediction Center
forecasts enhanced probabilities of above normal temperatures
and slightly enhanced probabilities for above normal precipitation. |
| |
|
| Normal
high temperature |
99.6° |
| Normal
low temperature |
73.4° |
| Normal
monthly temperature |
86.5° |
| Record
high temperature |
114°
on July 25, 1995 and July 4, 1989 |
| Record
low temperature |
49°
on July 3, 1911 |
| Warmest
July (avg) |
90.6°
in 2005 |
| Coldest
July (avg) |
81.4°
in 1912 |
| Normal
rainfall |
2.07" |
| Wettest
July day |
3.93"
on July 29, 1958 |
| Wettest
July |
6.24"
in 1921 |
| Driest
July |
0.04"
in 1995 |
| |
|
|
The number
of daylight hours will increase from 14 hours 13 minutes on
the 1st to 13 hours 44 minutes on the 31st, a loss of 29 minutes.
|
|
| |
Glueck
|
www.weather.gov 
