Weather Patterns
The table below shows the temperatures by month for Arches National Park. According to this chart it is common for the days to reach well over 100 degrees Fahrenheit in the summer (June – August) with a typical average of 70 degrees. The temperature in winter averages about 40 degrees but it can get all the way down to 0 degrees. The best time to visit the park would depend on if you liked warmer or colder temperatures. Most people look for moderate temperatures during the time of their visits so from April to May and September to October would be a great time to go to Arches. This way you could be in the park during the best time of the year. During the late summer there is a monsoonal period that can bring in thunderstorms and flash floods.
|
Average
High
|
Average
Low
|
Extreme
High
|
Extreme
Low
|
Days
Above 100
|
Days
Below 32
|
Jan
|
44
|
22
|
63
|
-1
|
0
|
28
|
Feb
|
52
|
28
|
73
|
9
|
0
|
22
|
March
|
64
|
35
|
87
|
13
|
0
|
10
|
April
|
71
|
42
|
93
|
25
|
0
|
3
|
May
|
82
|
51
|
105
|
33
|
1
|
0
|
June
|
93
|
60
|
110
|
43
|
6
|
0
|
July
|
100
|
67
|
116
|
51
|
16
|
0
|
Aug
|
97
|
66
|
109
|
44
|
12
|
0
|
Sept
|
88
|
55
|
105
|
36
|
1
|
0
|
Oct
|
74
|
42
|
106
|
23
|
0
|
2
|
Nov
|
56
|
30
|
79
|
12
|
0
|
18
|
Dec
|
45
|
23
|
69
|
5
|
0
|
26
|
Michael Riffle took this amazing
picture of spectacular cumulonimbus clouds, which can be found at the site below. This picture shows an incoming storm during the monsoon
season.
This is a picture of
lightning taken from the Arches National Parks facebook page. It shows both forked (on the right) and ribbon lighting (on the left).