Skip to content

Next Storm/Next Snow Forecast Discussion from the Cherrywood Observatory – December 25, 2018

This content was originally published by the Longmont Observer and is licensed under a Creative Commons license.

Forecast Discussion:

Merry Christmas (to those who are reading online news today... I'll post this a bit early on Christmas Eve night for those putting bicycles together...)

There will be light snow falling in the western slopes of our state and a few spots way out on the Plains, but things should be dry around Longmont (we do have 2% chance of blow-over flurries Christmas morning) (Figure 1).  We do climb to the mid-40'sF again today (a bit above average).

Figure 1: The forecast accumulated snow map from the GFS and weather5280.com for Colorado, through Christmas Day night.

The longer range forecast:

The models are trending the storm further south leaving us out of the snow-fun. Figure 2 shows meager chances of snow late Christmas night through Thursday AM.  That is, at least, good for holiday travel.

Looking out further, Figure 2 shows snow around the New Year period, but we've seen big storms 8-10 days out fade away before in this season.  It sure could happen again.  This is weatherunderground's model, the GFS (Figure 3) has good snows down in AZ, NM, TX and southern CO - Longmont is skipped, for the most part, through the start of 2019.  Hmmm.

Figure 2: the graphical forecast for the next 10 days forecast for Longmont, CO from weatherunderground.com

Figure 3: The forecast accumulated snow map from the GFS and weather5280.com for the entire CONUS, through New Years Day midnight.

Current Weather

Mostly clear

Mostly clear

33°F

UV Index
0 Low
Pressure
29.99 Steady
Visibility
8 miles
Dewpoint
23 °F
Humidity
67%
Wind
WNW 2.2 mph
Gust
4.7 mph
Wind Chill
33 °F

Hourly Forecast

Today
4 AM
30°F
Intermittent clouds
Today
5 AM
28°F
Intermittent clouds
Today
6 AM
26°F
Mostly cloudy
Today
7 AM
29°F
Mostly cloudy
Today
8 AM
36°F
Partly sunny
Today
9 AM
42°F
Partly sunny
Today
10 AM
48°F
Partly sunny
Today
11 AM
53°F
Partly sunny
Today
12 PM
57°F
Partly sunny
Today
1 PM
60°F
Partly sunny
Today
2 PM
62°F
Partly sunny
Today
3 PM
63°F
Partly sunny

7 Day Forecast

Mostly sunny

Wednesday

54 °F

Sunny to partly cloudy and warmer


Mostly cloudy

Wednesday Night

26 °F

Increasing cloudiness


Partly sunny

Thursday

64 °F

Partly sunny


Intermittent clouds

Thursday Night

35 °F

Partly cloudy


Partly sunny w/ showers

Friday

54 °F

Cooler with times of clouds and sun; a couple of showers late in the afternoon


Showers

Friday Night

33 °F

A couple of showers in the evening; otherwise, cloudy


Mostly cloudy

Saturday

60 °F

Mostly cloudy


Intermittent clouds

Saturday Night

36 °F

Partly cloudy


Intermittent clouds

Sunday

62 °F

Times of sun and clouds


Mostly cloudy

Sunday Night

36 °F

Becoming cloudy with a shower in spots late


Sunrise and Sunset

Sunrise
6:51 AM
Sunset
7:21 PM

Based on AccuWeather data