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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

Light rain

Light rain

78°F

UV Index
1 Low
Pressure
30.11 Steady
Visibility
8 miles
Dewpoint
46 °F
Humidity
31%
Wind
N 4.3 mph
Gust
10.4 mph
Wind Chill
78 °F

Hourly Forecast

Today
6 PM
82°F
Thunderstorms
Today
7 PM
78°F
Partly sunny w/ t-storms
Today
8 PM
75°F
Partly sunny
Today
9 PM
73°F
Partly cloudy
Today
10 PM
70°F
Partly cloudy
Today
11 PM
67°F
Partly cloudy
Tomorrow
12 AM
64°F
Partly cloudy
Tomorrow
1 AM
64°F
Partly cloudy
Tomorrow
2 AM
63°F
Clear
Tomorrow
3 AM
62°F
Clear
Tomorrow
4 AM
60°F
Clear
Tomorrow
5 AM
59°F
Mostly clear

7 Day Forecast

Partly sunny w/ t-storms

Sunday

90 °F

Sunny to partly cloudy with a strong thunderstorm in spots late this afternoon; thunderstorms can bring hail and damaging winds


Mostly clear

Sunday Night

57 °F

Clear to partly cloudy


Partly sunny w/ t-storms

Monday

94 °F

Partly sunny with a strong thunderstorm in the area in the afternoon; thunderstorms can bring gusty winds, hail and localized flooding


Clear

Monday Night

60 °F

Clear


Partly sunny

Tuesday

95 °F

Partly sunny


Clear

Tuesday Night

55 °F

Clear


Mostly sunny

Wednesday

100 °F

Mostly sunny and very warm


Partly cloudy

Wednesday Night

65 °F

Partly cloudy


Mostly sunny

Thursday

96 °F

Mostly sunny and very warm


Clear

Thursday Night

59 °F

Clear


Sunrise and Sunset

Sunrise
5:37 AM
Sunset
8:33 PM

Based on AccuWeather data