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Longmont Weather Forecast 8/10-11/2020

In Brief:

Little variation in the weather will occur this week as our ever present ridge remains strong.

Forecast Discussion:

A small shortwave (Figure 1)  will cool us to the upper 80'sF Monday (Figure 3) and bring back enough moisture Tuesday for nearby severe weather (Figure 4). These storms will be VERY widely scattered.  Most people will only see a storm in the distance if you are out at the right time.

A new fire in western Colorado will send thick plumes of smoke over the mountains in a pulse each day - sorry, you might even smell smoke this time (Figure 2). There is a large amount of smoke spreading across the U.S. from fires in the west. 

The Longer Range Forecast:

By Friday, the ridge will slide back to Arizona/New Mexico; we will stay hot and dry (Figure 5). Over the next 5 days, the GFS paints the state with small splashes of random light rain (Figure 6).

The even longer range forecast:

NOAA has issued its probability of temperature and precipitation anomalies for the month of August.  We are on the edge of the high probability of unusual heat covering the entire western U.S. (Figure 7). We are also in the "normal" zone for precipitation, but not far from the better chance of abnormally dry weather zone out west (Figure 8). What you see is what you're likely to get this month.


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

Drizzle

Drizzle

60°F

UV Index
1 Low
Pressure
30.17 Steady
Visibility
2 miles
Dewpoint
58 °F
Humidity
95%
Wind
NE 2.2 mph
Gust
3.7 mph
Wind Chill
60 °F

Hourly Forecast

Today
9 AM
68°F
Cloudy
Today
10 AM
71°F
Cloudy
Today
11 AM
75°F
Cloudy
Today
12 PM
79°F
Cloudy
Today
1 PM
82°F
Cloudy
Today
2 PM
85°F
Cloudy
Today
3 PM
88°F
Cloudy
Today
4 PM
87°F
Thunderstorms
Today
5 PM
87°F
Cloudy
Today
6 PM
86°F
Cloudy
Today
7 PM
84°F
Cloudy
Today
8 PM
81°F
Intermittent clouds

7 Day Forecast

Thunderstorms

Thursday

88 °F

Mostly cloudy; a morning shower in spots followed by a thunderstorm in spots this afternoon


Partly cloudy

Thursday Night

61 °F

Partly cloudy


Mostly cloudy

Friday

91 °F

Variable cloudiness


Partly cloudy

Friday Night

63 °F

Partly cloudy


Partly sunny

Saturday

87 °F

Partly sunny with a thunderstorm in spots in the afternoon


Partly cloudy

Saturday Night

62 °F

Partly cloudy


Mostly cloudy

Sunday

93 °F

Variable cloudiness with a thunderstorm in spots in the afternoon


Mostly clear

Sunday Night

59 °F

Mainly clear


Mostly sunny

Monday

94 °F

Mostly sunny


Mostly clear

Monday Night

61 °F

Mainly clear


Sunrise and Sunset

Sunrise
5:45 AM
Sunset
8:28 PM

Based on AccuWeather data