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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

Cloudy

Cloudy

69°F

UV Index
1 Low
Pressure
30.21 Steady
Visibility
6 miles
Dewpoint
49 °F
Humidity
49%
Wind
W 2.8 mph
Gust
6.4 mph
Wind Chill
69 °F

Hourly Forecast

Today
5 PM
70°F
Cloudy
Today
6 PM
68°F
Mostly cloudy w/ t-storms
Today
7 PM
65°F
Intermittent clouds
Today
8 PM
61°F
Intermittent clouds
Today
9 PM
60°F
Intermittent clouds
Today
10 PM
58°F
Intermittent clouds
Today
11 PM
57°F
Intermittent clouds
Tomorrow
12 AM
56°F
Mostly cloudy w/ t-storms
Tomorrow
1 AM
55°F
Intermittent clouds
Tomorrow
2 AM
54°F
Cloudy
Tomorrow
3 AM
53°F
Cloudy
Tomorrow
4 AM
53°F
Cloudy

7 Day Forecast

Partly sunny w/ t-storms

Tuesday

78 °F

Not as warm with times of clouds and sun; a thunderstorm or two this afternoon; thunderstorms can bring gusty winds, hail and localized flooding


Mostly cloudy w/ t-storms

Tuesday Night

50 °F

A thunderstorm this evening; otherwise, increasing clouds


Mostly cloudy w/ t-storms

Wednesday

73 °F

Some sun, then turning cloudy with a couple of thundershowers in the afternoon


Partly cloudy w/ t-storms

Wednesday Night

50 °F

A couple of showers and a thunderstorm in the evening; otherwise, clearing


Mostly sunny

Thursday

74 °F

Mostly sunny and pleasant


Clear

Thursday Night

45 °F

Clear


Sunny

Friday

81 °F

Plenty of sunshine


Partly cloudy

Friday Night

47 °F

Partly cloudy


Mostly sunny

Saturday

85 °F

Mostly sunny


Clear

Saturday Night

53 °F

Clear


Sunrise and Sunset

Sunrise
6:42 AM
Sunset
7:08 PM

Based on AccuWeather data