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Mon Update: The Front Range Forecast: More warmth, little rain

In Brief:

Near record heat and little chance of rain.

Monday Update:

The great western ridge moves in again bringing back late season 80's for highs.  The normal high temperature is only 65F now - this is really warm. Records for these dates are still a bit warmer, in the mid to upper 80's. We see a hint of cool weather and showers about 9 days from now, but that can certainly change.

Stay tuned!

figure2_10162023
Figure 2 update: the 10 day graphical forecast for Longmont from weatherunderground.com

End Monday update.

 

Special Note:  

This Saturday morning, we'll have a partial eclipse of the sun peaking around 10:30am.  This eclipse will, at no moment, be safe to look at in ANY WAY except by certified eclipse glasses (undamaged and new) or a telescope with appropriate front end solar filtering.

I will be opening the Cherrywood Observatory for people to come look.  Please do not bring any viewing aids (like binoculars) or welder goggles.  To find my address and details, search for the Cherrywood Observatory eclipse on Nextdoor.  I hope to see you there.

Thur Update:

The low and storm are pulling away.  I received about 0.16 in of water yesterday and a trace or more today. The first freezing temperatures are headed in overnight tonight.  There is a freeze watch for I-25 cities and the eastern plains.  Cover those plants or bring them inside!

figure1u_10122023
Figure 1 update: freeze watch map from the NWS.

End Thur update.

The Forecast Discussion:

The ridge holds on for a couple more days. We'll see above normal temperatures into Wednesday morning (Figure 1). Afternoons get a bit breezier each day.

figure1_10082023
Figure 1: the 10 day graphical forecast for Longmont from weatherunderground.com

The Longer Range Forecast:

A healthy cut-off low rolls over Colorado Wednesday afternoon and Thursday. (Figure 2). At present, northern Colorado will see the precipitation, rain on the low lands, snow in the northern mountains (Figure 3). Rainfall amounts do look pretty light, though (Figure 4).

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Figure 2: the 500mb upper air forecast map for Thursday noon from the GFS and tropicaltidbits.com
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Figure 3: the surface 6 hour precipitation forecast map for Thursday noon from the GFS and tropicaltidbits.com
figure4_10082023
Figure 4: the 5 day precipitation total from the GFS and 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.
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Current Weather

Mostly cloudy

Mostly cloudy

75°F

UV Index
2 Low
Pressure
30.1 Rising
Visibility
8 miles
Dewpoint
52 °F
Humidity
45%
Wind
NNW 4.9 mph
Gust
10.4 mph
Wind Chill
75 °F

Hourly Forecast

Today
5 PM
91°F
Thunderstorms
Today
6 PM
89°F
Mostly cloudy
Today
7 PM
86°F
Partly sunny w/ t-storms
Today
8 PM
82°F
Partly sunny w/ t-storms
Today
9 PM
78°F
Mostly clear
Today
10 PM
73°F
Mostly clear
Today
11 PM
71°F
Clear
Tomorrow
12 AM
69°F
Clear
Tomorrow
1 AM
67°F
Clear
Tomorrow
2 AM
65°F
Clear
Tomorrow
3 AM
65°F
Clear
Tomorrow
4 AM
65°F
Partly cloudy

7 Day Forecast

Mostly cloudy w/ t-storms

Friday

92 °F

Turning cloudy with a thunderstorm in parts of the area this afternoon


Partly cloudy w/ t-storms

Friday Night

63 °F

A thunderstorm in spots early this evening; otherwise, partly cloudy


Partly sunny w/ t-storms

Saturday

92 °F

Partly sunny with a thunderstorm in spots in the afternoon


Partly cloudy

Saturday Night

61 °F

Partly cloudy


Mostly cloudy w/ t-storms

Sunday

93 °F

Variable cloudiness with a thundershower in spots in the afternoon


Mostly cloudy

Sunday Night

62 °F

Increasing cloudiness


Mostly cloudy

Monday

93 °F

Mostly cloudy


Mostly clear

Monday Night

61 °F

Clear to partly cloudy


Intermittent clouds

Tuesday

94 °F

Intervals of clouds and sun


Intermittent clouds

Tuesday Night

62 °F

Partly cloudy


Sunrise and Sunset

Sunrise
5:46 AM
Sunset
8:27 PM

Based on AccuWeather data