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Indicators:
Biosphere
Average High/Low Temperatures
(°F)
Las Vegas Valley
2007
Average High
2007
Average Low
Historical
High
[1]
Historical
Low
[1]
High
- % Change
Low
- % Change
January
56.4
35.6
57.1
36.8
-1.2%
-3.3%
February
64.9
44.4
63.0
41.4
3.0%
7.2%
March
76.3
52.5
69.5
47.0
9.8%
11.7%
April
81.6
59.3
78.1
53.9
4.5%
10.0%
May
92.0
68.9
87.8
62.9
4.8%
9.5%
June
101.5
77.5
98.9
72.3
2.6%
7.2%
July
107.1
83.6
104.1
78.2
2.9%
6.9%
August
103.5
81.5
101.8
76.7
1.7%
6.3%
September
93.1
72.3
93.8
68.8
-0.7%
5.1%
October
80.6
58.9
80.8
56.5
-0.2%
4.2%
November
71.1
50.6
66.0
44.0
7.7%
15.0%
December
53.3
37.1
57.3
36.6
-7.0%
1.4%
Annual Temperature
81.9
60.2
79.9
56.3
2.5%
6.9%
[1] Average Historical High and Low temperatures are from the year 1971 through 2000.
Average Monthly Rainfall
(Inches)
Month
200
7
200
6
Percentage Change
January
0.1
0
0.0%
February
0.2
0.1
100.0%
March
Trace
0.2
0.0%
April
0.1
Trace
n/a
May
Trace
Trace
n/a
June
0
0.1
-100.0%
July
0.3
0.1
200.0%
August
0.8
0
0.0%
September
0.7
Trace
n/a
October
0
1.1
-100.0%
November
0.6
0
n/a
December
0.1
0.1
n/a
Annual
Rainfall
2.7
1.7
58.8%
Average Monthly Humidity
Month
2007
200
6
Percentage Change
January
32
n/a
n/a
February
34
26
30.8%
March
24
36
-33.3%
April
22
28
-21.4%
May
13
16
-18.8%
June
11
15
-26.7%
July
21
25
-16.0%
August
24
17
41.2%
September
23
20
15.0%
October
23
n/a
n/a
November
25
26
-3.8%
December
42
37
13.5%
Annual
Humidity
25
24
4.2%
Water Quality
(2007)
Substance
Average Value
(PPB - unless noted)
MCL
(PPB - unless noted)
Aluminum
ND
200.0
Antimony
ND
6.0
Arsenic
2.5
10.0
Barium
.14ppm
2.0
Beryllium
ND
4.0
Cadmium
ND
5.0
Chromium
2.7
100.0
Copper
1.1ppm
1.3
Iron
ND
600.0
Lead
2.0
15.0
Manganese
ND
100.0
Mercury
ND
2.0
Molybdenum
5.6
N/A
Nickel
ND
N/A
Selenium
ND
50.0
Silver
ND
100.0
Substance
Average Value
(PPB - unless noted)
MCL
(PPB - unless noted)
Thallium
ND
2.0
Vanadium
2.1
N/A
Zinc
.15ppm
5.0
Calcium
84ppm
N/A
Carbon Dioxide
3.4ppm
N/A
Chloride
102ppm
400.0
Chloridine Residual
1.08ppm
4.0
Fluoride
.78ppm
4.0
Hardness
338ppm
N/A
Nitrates
.60ppm
10.0
Sodium
110ppm
N/A
Temperature
17.3 deg C
N/A
Total Dissolved Solids
675ppm
1000.0
Uranium
4.8
5.0
Radium
ND
30.0
Water Consumption
(2004)
Average Consumed per Month
2004 Gallons Consumed Per Account
Per Month
(in 1,000's)
Share of
Total
Consumption
2003 Gallons Consumed Per Account
Per Month
(in 1,000's)
Share of
Total
Consumption
% Change in Consumption
Per Account
Per Month
Single Family Residential
15.1
43.0%
16.9
43.80%
-10.7%
Multi-family Residential
194.5
16.4%
197.6
16.10%
-1.6%
Hotels, Motels
1715.2
10.4%
1655.2
9.60%
3.6%
Commercial, Industrial, Public, Misc.
156.5
30.3%
163.1
30.60%
-4.0%
Total
31.9
100.0%
35.0
100.00%
-8.9%
