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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 clear

Mostly clear

66°F

UV Index
0 Low
Pressure
30.18 Rising
Visibility
8 miles
Dewpoint
57 °F
Humidity
72%
Wind
N 2.9 mph
Gust
6.9 mph
Wind Chill
66 °F

Hourly Forecast

Today
1 AM
63°F
Mostly clear
Today
2 AM
62°F
Mostly clear
Today
3 AM
60°F
Mostly clear
Today
4 AM
60°F
Partly cloudy
Today
5 AM
59°F
Intermittent clouds
Today
6 AM
60°F
Cloudy
Today
7 AM
60°F
Cloudy
Today
8 AM
62°F
Cloudy
Today
9 AM
64°F
Cloudy
Today
10 AM
66°F
Mostly cloudy
Today
11 AM
69°F
Mostly cloudy
Today
12 PM
71°F
Intermittent clouds

7 Day Forecast

Mostly cloudy w/ t-storms

Sunday

85 °F

Increasing cloudiness with a thunderstorm in spots this afternoon


Partly cloudy w/ t-storms

Sunday Night

59 °F

A thundershower in spots late this evening; otherwise, partly cloudy


Thunderstorms

Monday

79 °F

Mostly cloudy with a thunderstorm in the afternoon; thunderstorms can produce hail


Partly cloudy w/ t-storms

Monday Night

59 °F

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


Intermittent clouds

Tuesday

91 °F

Times of sun and clouds


Clear

Tuesday Night

59 °F

Clear


Mostly cloudy

Wednesday

92 °F

Mostly cloudy


Mostly clear

Wednesday Night

60 °F

Mainly clear


Intermittent clouds

Thursday

89 °F

Intervals of clouds and sunshine


Intermittent clouds

Thursday Night

64 °F

Becoming clear


Sunrise and Sunset

Sunrise
5:34 AM
Sunset
8:34 PM

Based on AccuWeather data