575
FNUS75 KBOU 131346
FWSBOU

Spot Forecast for TRR Monitoring 10/13...NPS
National Weather Service Denver/Boulder CO
746 AM MDT Mon Oct 13 2025

If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Scattered snow showers are possible today, mainly
this afternoon into the overnight hours. Temperatures in the low
40s will generally limit snow accumulation today, but up to around
a half inch of snow is expected through tonight. Tomorrow will be
warmer, with high temperatures returning to the upper 40s to low
50s. The next storm system is expected to arrive late Wednesday
into Thursday, with better chances of accumulating snow in that
period.

.REST OF TODAY...

Sky/weather.........Partly cloudy (35-45 percent) until 0900, then
                    mostly cloudy (65-75 percent). Slight chance of
                    snow showers after 0900 until 1200, then chance
                    of snow showers.
Chance of pcpn......40 percent.
Max temperature.....Around 45.
Min humidity........52 percent.
Surface winds (mph).South winds 9 to 14 mph with gusts to around 21
                    mph until 1600, then southeast 10 to 15 mph
                    with gusts to around 21 mph.
Snowfall amount.....0.3 inches.

TIME (MDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........39  54  71  76  83  82  88  89  86  81
Weather cov.....    SCH SCH SCH CHC CHC CHC CHC CHC CHC
Weather type....    SW  SW  SW  SW  SW  SW  SW  SW  SW
Tstm cov........
Chc of pcpn (%).10  20  20  20  40  40  40  40  40  40
Temp............26  32  39  40  44  42  41  40  39  35
RH..............74  63  52  57  53  60  65  70  64  72
Surface wnd dir.S   S   S   S   S   S   S   SE  SE  SE
Surface wnd spd.9   10  12  13  13  13  12  12  12  12
Surface wnd gst.18  20  20  20  20  20  21  21  21  20

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of snow
                    showers.
Chance of pcpn......40 percent.
Min temperature.....Around 27.
Max humidity........100 percent.
Surface winds (mph).Southeast winds 9 to 14 mph with gusts to
                    around 20 mph until 2300. Southwest 5 to 8 mph
                    after 0400.
Snowfall amount.....0.2 inches.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........83  84  77  76  75  76  74  71  69  61  61  61
Weather cov.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
Weather type....SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Tstm cov........
Chc of pcpn (%).40  40  40  40  40  40  30  30  30  30  30  30
Temp............33  31  30  30  31  31  32  32  31  30  30  28
RH..............89  96  100 100 96  96  92  92  100 100 100 100
Surface wnd dir.SE  SE  SE  SE  SE  S   S   S   S   S   S   SW
Surface wnd spd.12  10  10  10  10  9   9   8   8   7   6   6
Surface wnd gst.20  20  20  20  18  17  16  15  15  14  13  12

.TUESDAY...

Sky/weather.........Partly cloudy (30-40 percent) until 1300, then
                    mostly sunny (20-30 percent). Slight chance of
snow showers until 0900, then a slight chance of
rain and snow showers until 1200.
Chance of pcpn......20 percent.
Max temperature.....Around 52.
Min humidity........44 percent.
Surface winds (mph).Southwest winds 6 to 12 mph with gusts to
                    around 20 mph until 1700, then southeast around
                    8 mph.
Snowfall amount.....0.0 inches.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........44  40  40  38  36  36  28  25  25  22  24  24
Weather cov.....SCH SCH SCH SCH SCH SCH
Weather type....SW  SW  SW  RS  RS  RS
Tstm cov........
Chc of pcpn (%).20  20  20  20  20  20  10  10  10  10  10  10
Temp............30  30  32  39  43  46  48  50  51  51  50  48
RH..............100 100 96  76  65  58  56  48  46  44  46  51
Surface wnd dir.S   S   SW  SW  SW  SW  SW  SW  S   S   S   SE
Surface wnd spd.6   6   7   8   9   10  12  12  12  10  9   8
Surface wnd gst.12  13  14  14  15  16  17  18  20  20  17  15

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
Mostly clear with slight chance of rain and snow showers. Lows in
the lower 30s. Highs in the lower 50s. South winds around 9 mph.
.THURSDAY...
Colder. Mostly cloudy with snow showers likely and chance of
showers. Lows in the upper 20s. Highs in the upper 30s. West
winds around 10 mph.
.FRIDAY...
Mostly cloudy. Chance of snow showers. Lows around 20. Highs in
the mid 30s. West winds around 13 mph.

$$
Forecaster...Hiris
Requested by...Caleb Waters
Type of request...OTHER
.TAG 2523498.0/BOU
.DELDT 10/13/25
.FormatterVersion 2.0.0
.EMAIL caleb_waters@nps.gov