Marine Weather and Tide Forecast for Raymer (New Raymer), CO

DISCUSSION /Through Tuesday/
Issued at 205 PM MST Tue Jan 13 2026

The north-northwest flow aloft will persist through tonight around an upper level high centered over northern California and southern Oregon. Moisture aloft is being funneled around the high and then traveling southward across Colorado. This will continue to result in mostly cloudy skies through tonight. There is a weak shortwave trough embedded in the north-northwest flow aloft and a weak cold front that will drop south across eastern Colorado tonight. A brief gusty wind shift to the northeast will be possible when the front moves through. Clouds will also increase with a few weak rain/snow showers. Precipitation amounts are expected to be light and less than a tenth inch. The clouds linger into the morning hours while precipitation is expected to have wrapped up. Temperatures will be cooler Wednesday, but remain above normal with highs in the 50s across northeast Colorado.

North-northwest flow aloft continues Thursday and Friday, strengthening Friday with the passage of a shortwave trough. Winds increase over the eastern plains, especially Friday behind the cold front. Winds could approach high wind criteria over the far northeast plains late Thursday night and Friday. Other concern will be elevated/critical fire weather conditions associated with the windy conditions. Temperatures rebound some on Thursday ahead of the cold front with high temperatures reaching the upper 50s to lower 60s across northeast Colorado. On Friday, temperatures fall to near normal with highs in the 40s. The airmass remains dry with no chance for precipitation Thursday and Friday.

The north to northwest flow aloft will continue through the weekend and into early next week. Models show two shortwave troughs and cold fronts grazing eastern Colorado. One on Saturday and the second one Monday or Tuesday. The pattern still looks dry with ridging to the west cutting off Pacific moisture. Temperatures will be challenging to forecast. Arctic air will be just east of the area, and a slight model adjustment westward would bring colder air to into eastern Colorado at times behind the cold fronts. The warm days (Sunday and maybe Tuesday) highs are expected to reach the 50s over northeast Colorado. Highs on the cooler/colder days may only reach the 40s and possibly only 30s over the plains.

AVIATION /00Z TAFS through 00Z Thursday/
Issued at 500 PM MST Tue Jan 13 2026

Models are still showing a surge of cooler air to move across the airport by late evening - around 04Z. The northerly upslope winds behind it should last most of tonight but decrease in speeds through the period. Will leave the PROB30 group in for about 4 hours for -SHRASN. Ceilings could get down to about BKN040 from late tonight into mid Wednesday morning, and perhaps a tad lower with the -SHRASN.

BOU WATCHES/WARNINGS/ADVISORIES
None.