Skip Navigation Linkswww.weather.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service Forecast Office   NWS logo - Click to go to the NWS homepage    
Tucson, Arizona
navigation bar decoration      
spacer
June 2013 climate report for Tucson Arizona
[Back to monthly climate reports page] [Daily date F-6] [Temperature graph]
June 2013 climate report for Tucson

 

Headlines
HOTTEST June on record
First month on record that each day recorded triple digit highs
6th longest streak on record for consecutive days with triple digit highs (30 days)
5th warmest daily June low on record
7th warmest month on record
8th warmest and 29th driest first half of year on record
Warmest March thru June period on record
 

One year after recording the 5th hottest June on record, Tucsonans' lived through the HOTTEST June on record where for the first time on record, every day recorded a triple digit high. The closest a month came to achieving this feat was August 1994 when 30 days recorded triple digit highs.

 

The month started off with the first 100° (12:22 pm) and 105° (3:06 PM) day of 2013 occurring on the 1st. This is the fourth time on record that this has occurred on the same day and first since 2005. The other two occurrences were in 1914 & 1996. This was the first year since 2004 that the first 100° day of the year occurred in June. Tucson set a record high on the 2nd with a high of 107°, which broke the previous record high of 105°, which last occurred in 2004. Over the next 10 days, daily highs ranged from 101° to 108° with the 7th (107°) and 12th (108°) coming within one degree of their respective daily record highs.

 

The area saw an increase in moisture on the 13th thru the 15th which resulted in isolated to scattered showers and thunderstorms, mainly on the 15th. Most of the shower activity occurred on the east side of Tucson where isolated rainfall amounts up to six-tenths of an inch were recorded. Even had reports of small hail on the 15th. Surface dewpoint values on the 14th and 15th were, at times, in the lower to mid 50s.

 

The remainder of the month was dry, with the exception being some light sprinkles on the 29th and severe thunderstorms and locally heavy rain on the 30th. The triple digit high train continued for the rest of the month culminating with the first three consecutive day period with highs of 110° or greater since 1995. Additional information on 110°+ days can be found on the NWS Tucson website. At the close of the month, the consecutive day streak of triple digit highs stood at 30 days, which is the 6th longest streak on record,

 

Strong high pressure that was parked over northern Mexico from the 22nd to 26th moved north over the desert southwest on the 27th and strengthened further to close out the month. This ridge of high pressure aloft brought the hottest daytime temperatures to Tucson since 2011. On the 28th, at 1:24 PM MST, the Tucson airport hit 110° for the first time since June 28, 2011 (3:01 PM). On the 29th, at 4:21 PM MST, the Tucson airport hit 112° for the first time since June 27, 2011 (4:37 PM).

 

With the upper high over northern Arizona, the flow aloft became more easterly over the last several days of the month which enabled smoke from the Silver wildfire in southwest New Mexico to spread over the area. Moisture values also increased a bit with the last two mornings of the month being very warm due to debris cloud cover over the area. In fact, the low temperature on the 29th of 84° ranks as the 5th warmest June low temperature on record (tied with three other dates). (see table below)

 

On the afternoon and early evening hours of the 30th, severe thunderstorms moved across eastern and southern sections of the metro area. Wind gusts of 50 to 70 mph were recorded across the metro area which produced minor damage and a dust storm. The airport recorded a wind gust of 68 mph at 6:56 PM Highest rainfall amounts in the above sections were around a half an inch.

 

The monthly average temperature of 89.4° ranks as the HOTTEST June on record, breaking the previous monthly record of 89.2° from 1994. Temperature extremes for the month ranged from a high of 112° on the 29th to a low of 68° on the 6th. (see tables below for historical rankings)

 
Hottest June on record
Hottest average June high temperature on record
Warmest average June low temperature on record
89.4°
2013
105.7°
1990
74.3°
2006
89.2°
1994
105.5°
1994
73.5°
2013
88.6°
1990
105.4°
2013
72.9°
1994
88.4°
2006
104.0°
1988
72.4°
1996
88.0°
2002
103.8°
2002
72.2°
2012
 
Hottest months on record
Warmest daily June low on record
90.6°
July 2005
86°
June 27, 1990
90.4°
July 1994
85°
June 30, 1994
90.2°
August 1994
85°
June 27, 1994
90.1°
July 2009
85°
June 28, 1932
89.9°
July 1989
84°
June 29, 2013
89.7°
July 1942
84°
June 30, 2010
89.4°
June 2013
84°
June 7, 1912
89.3°
August 2011
84°
June 29, 1898
89.2°
July 2003
83°
June 22, 2005
89.2°
June 1994
83°
June 16, 1998*
 
 
June 2013 daily high temperature departure from normal June 2013 daily low temperature departure from normal
Click on image above for larger view
 

Rainfall amounts across the metro area using several sources like rainlog.org, CoCoRaHS and the Pima County Regional Flood Control District gages, generally ranged from zero to half an inch /0.50"/ with localized amounts up to three-quarters of an inch /0.75"/. Most of the rain fell on the east to southeast side of the metro area. Officially, the Tucson International airport, which is the official recording location for Tucson, recorded three-hundredths of an inch /0.03"/ during June.

 
June 2013 stats
Month
Normal
Departure
Average high temperature
105.4°
100.3°
+ 5.1°
Average low temperature
73.5°
69.3°
+ 4.2°
Average temperature
89.4°
84.8°
+ 4.6°
Number of 100° + highs
30
19
+ 11
Number of 105° + highs
18
9
+ 9
Number of 110° + highs
3
<1
+ 3
Rainfall
0.03"
0.24"
- 0.21"
 

The average monthly dewpoint temperature for June was 28°, which is eight degrees below the June normal of 36°. A record low average daily dewpoint temperature of 19° was set on 26th.


2013

The first half of 2013 goes into the record books as the 8th warmest on record (tied with 1994) with an average temperature to date of 67.6° which is 1.5° above normal. The average low temperature of 53.0° during the first half of 2013 ranks as the 6th warmest on record but behind the record of 53.8° from 2005. Interesting to note that the March thru June period goes into the record books as the warmest on record for this four month period.

 

Officially, at the airport, only 1.77" has been recorded in 2013 which ranks as the 29th driest January thru June period on record. With 3 months left in the hydrological water year, the airport has recorded only 2.98" of rain, which ranks as the 22nd driest October thru June period on record.

 
2013 stats thru June
Month
Normal
Departure
Average high temperature
82.1°
80.5°
+ 1.7°
Average low temperature
53.0°
51.8°
+ 1.2°
Average temperature
67.6°
66.1°
+ 1.5°
Number of 100° + highs
30
23
+ 7
Number of 105° + highs
18
10
+ 8
Number of 110° + highs
3
<1
+ 3
Rainfall
1.77"
3.27"
- 1.50"
2012-13 Water Year rainfall (Oct-Jun)
2.98"
5.66"
- 2.68"

Looking ahead into July
The Climate Prediction Center forecasts slightly enhanced probabilities for ABOVE normal rainfall and temperatures.
  Daily normals | Daily records
Normal monthly high temperature 99.7°
Normal monthly low temperature 74.4°
Normal monthly temperature 87.0°
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 2.25"
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 decrease from 14 hours 13 minutes on the 1st to 13 hours 43 minutes on the 31st, a loss of 30 minutes.
 
Glueck

Webmaster
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Tucson Weather Forecast Office
520 North Park Ave, Suite 304
Tucson, AZ 85719

Tel: (520) 670-6526

Disclaimer
Information Quality
Credits
Glossary
Organization
Privacy Policy
Freedom of Information Act
About Us
Career Opportunities