Skip to content
Join our Newsletter

The Front Range Forecast: A more normal summer

In Brief:

Severe weather on the plains east of I-25, typical summer weather for everyone else.

The Forecast Discussion:

The normal high temperature for I-25 folks is 90F this week (the highest normal high temperature we see in the year). For most of the next 10 days we are close to or a bit below that except for the start of next week (Figure 1). There are low chances of an afternoon storm through Saturday with severe weather just east of I-25 Thursday (Figure 3). That is being kicked off by a ripple traveling through the upper-level flow (Figure 2 - red line over Colorado) and persistent good low-level moisture levels (high dew points).

 

figure1_07132023
Figure 1: the 10 day graphical forecast for Denver from weatherunderground.com
figure2_07132023
Figure 2: the 500mb upper air forecast map for Thursday evening from tropicaltidbits and the GFS.
figure3_07132023
Figure 3: the severe weather outlook for Thursday from the SPC and NOAA.

The Longer Range Forecast:

The upper air pattern evolves into a 'northwest flow' setup over Colorado after that as a ridge forms over the West (Figure 4). We can get surprise afternoon and evening storms with this pattern. The forecast may be tricky this next week. Keep an eye on the skies for storms that may 'come out of nowhere.'

The expected rainfall over the next 5 days is light and confined to the eastern side of the Rockies (Figure 5).  I'm getting concerned about how long we have not had rain in western Colorado.  Hopefully the U.S. monsoon starts up soon and brings rain/storms back to that side of the state.

figure4_07132023
Figure 4: the 500mb upper air forecast map for Sunday noon from tropicaltidbits and the GFS.
figure5_07132023
Figure 5: the 5 day precipitation forecast from weather5280.com

 


About the Author: John Ensworth

John Ensworth used to work from Longmont as the PI for the NASA through the IGES (The Institute for Global Environmental Strategies). He now teaches technology, algebra, astronomy, meteorology, film school, and Lego robotics to middle/high school.
Read more


Comments


Current Weather

Mostly cloudy

Mostly cloudy

65°F

UV Index
0 Low
Pressure
30.1 Rising
Visibility
8 miles
Dewpoint
61 °F
Humidity
87%
Wind
ESE 2.2 mph
Gust
5.1 mph
Wind Chill
65 °F

Hourly Forecast

Today
10 PM
66°F
Partly cloudy
Today
11 PM
65°F
Partly cloudy
Tomorrow
12 AM
64°F
Partly cloudy
Tomorrow
1 AM
63°F
Partly cloudy w/ t-storms
Tomorrow
2 AM
62°F
Partly cloudy
Tomorrow
3 AM
61°F
Partly cloudy
Tomorrow
4 AM
60°F
Partly cloudy
Tomorrow
5 AM
59°F
Partly cloudy
Tomorrow
6 AM
60°F
Mostly sunny
Tomorrow
7 AM
62°F
Mostly sunny
Tomorrow
8 AM
64°F
Mostly sunny
Tomorrow
9 AM
66°F
Mostly sunny

7 Day Forecast

Partly sunny w/ t-storms

Tuesday

79 °F

A morning shower; otherwise, some sun; a few t-storms, some severe this afternoon; storms can bring flash flooding, hail, damaging winds, and even a tornado


Partly cloudy w/ t-storms

Tuesday Night

59 °F

An evening thunderstorm in one or two spots; otherwise, partly cloudy


Partly sunny w/ t-storms

Wednesday

79 °F

Times of clouds and sun with a thunderstorm in the afternoon; thunderstorms can bring hail and damaging winds


Mostly clear

Wednesday Night

55 °F

Clear to partly cloudy


Partly sunny

Thursday

89 °F

Partly sunny and pleasant


Clear

Thursday Night

55 °F

Clear


Mostly sunny

Friday

94 °F

Mostly sunny and very warm


Clear

Friday Night

57 °F

Clear


Mostly sunny

Saturday

94 °F

Sunny to partly cloudy and very warm


Mostly clear

Saturday Night

56 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:32 AM
Sunset
8:34 PM

Based on AccuWeather data