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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!

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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

44°F

UV Index
0 Low
Pressure
30.18 Steady
Visibility
2 miles
Dewpoint
43 °F
Humidity
96%
Wind
ENE 3.3 mph
Gust
6.7 mph
Wind Chill
43 °F

Hourly Forecast

Today
6 PM
45°F
Showers
Today
7 PM
46°F
Cloudy
Today
8 PM
46°F
Rain
Today
9 PM
46°F
Cloudy
Today
10 PM
46°F
Rain
Today
11 PM
46°F
Rain
Tomorrow
12 AM
46°F
Rain
Tomorrow
1 AM
46°F
Rain
Tomorrow
2 AM
45°F
Intermittent clouds
Tomorrow
3 AM
45°F
Intermittent clouds
Tomorrow
4 AM
44°F
Intermittent clouds
Tomorrow
5 AM
44°F
Intermittent clouds

7 Day Forecast

Showers

Friday

46 °F

A thick cloud cover and chilly with a few showers


Mostly cloudy w/ showers

Friday Night

43 °F

Rain and drizzle this evening; otherwise, low clouds breaking


Mostly cloudy

Saturday

74 °F

Warmer with variable cloudiness


Clear

Saturday Night

41 °F

Clear


Partly sunny

Sunday

80 °F

Very warm with sunshine mixing with some clouds; breezy in the afternoon; elevated fire risk due to gusty winds and low humidity


Partly cloudy

Sunday Night

46 °F

Partly cloudy


Mostly cloudy

Monday

64 °F

Turning cloudy, windy and cooler; a shower in spots in the afternoon


Mostly cloudy

Monday Night

39 °F

Cloudy in the evening, then partly cloudy late


Intermittent clouds

Tuesday

66 °F

Sun and clouds


Mostly clear

Tuesday Night

39 °F

Mainly clear


Sunrise and Sunset

Sunrise
6:08 AM
Sunset
7:49 PM

Based on AccuWeather data