Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
817
FNUS75 KBOU 271508
FWSBOU
Spot Forecast for Lake John SWA Broadcast...Colorado DFPC
National Weather Service Denver/Boulder CO
908 AM MDT Tue Oct 27 2026
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
For today, Wednesday, and Thursday, high temperatures are
forecast to be in the mid 50s. Thursday should be the warmest day
of the stretch with highs approaching 60. Lows in the upper teens
to low 20s each evening. Only a few clouds this afternoon and
Wednesday afternoon. Skies are trending more cloudy for Thursday
afternoon and evening with about a 60% chance now for mostly
cloudy skies.
No precipitation is expected through at least Friday afternoon.
Winds look gusty each afternoon (Tuesday through Thursday) this
week with south to southwest winds and gusts of 20-30 mph
possible. Wednesday afternoon looks the most gusty out of the week
at this time with the potential for some gusts of 30-35 mph.
Relative humidity should drop into the low 30s this afternoon and
Wednesday afternoon with RH even dropping in the low to mid 20s on
Thursday afternoon. Humidities should recover very nicely each
night. Smoke dispersal is expected to be good to very good for
Wednesday and Thursday afternoon through at least 5pm.
.REST OF TODAY...
Sky/weather.........Partly cloudy (30-40 percent) until 1400, then
mostly sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 54.
Min humidity........35 percent.
Wind (20 ft)........Southwest winds 10 to 18 mph. Gusts up to 30
mph in the late morning and afternoon.
Mixing height.......4700 ft AGL.
Transport winds.....Southwest 14 to 21 mph until 1100, then 24 to
30 mph.
Smoke dispersal.....Poor until 1000, then fair until 1100, then
good until 1200, then very good until 1700,
then good.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........41 38 38 30 26 16 12 9 10
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0
Temp............36 42 48 52 52 53 54 53 51
RH..............78 62 51 43 41 38 35 36 39
20 FT wind dir..SW SW SW SW SW SW SW SW SW
20 FT wind spd..10 13 15 17 18 17 17 16 14
20 FT wind gust.16 21 24 28 30 28 28 25 22
Mix hgt (kft)...1.0 2.3 3.1 3.9 4.6 5.0 5.0 4.5 3.6
Transp wind dir.SW SW SW SW SW SW SW SW SW
Transp wind spd.14 21 28 30 30 30 29 28 24
Vrate kt-ft/1K..12 42 76 101 119 129 125 108 75
SmokeDispersion.P F G VG VG VG VG VG G
.TONIGHT...
Sky/weather.........Mostly clear (15-25 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 26.
Max humidity........85 percent.
Wind (20 ft)........Southwest winds 6 to 11 mph until 2000, then
south 7 to 12 mph.
Mixing height.......Below 1000 FT AGL.
Transport winds.....Southwest 10 to 17 mph.
Smoke dispersal.....Poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........9 8 7 8 10 31 35 31 26 28 29 21
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............48 42 39 37 34 34 32 30 29 29 29 29
RH..............44 55 62 64 75 75 78 81 81 81 78 81
20 FT wind dir..SW SW S S S S S S S S S S
20 FT wind spd..9 8 8 7 7 7 7 8 8 9 12 12
20 FT wind gust.15 13 13 12 12 12 12 13 13 15 18 18
Mix hgt (kft)...0.9 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.5
Transp wind dir.SW SW SW S S S S S S SW SW S
Transp wind spd.15 12 10 12 10 12 10 14 15 16 16 17
Vrate kt-ft/1K..12 5 5 5 5 5 5 7 7 8 8 8
SmokeDispersion.P P P P P P P P P P P P
.WEDNESDAY...
Sky/weather.........Mostly sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 53.
Min humidity........36 percent.
Wind (20 ft)........South winds 11 to 16 mph with gusts to around
21 mph until 0800, then southwest 10 to 18 mph
with gusts to around 35 mph.
Mixing height.......Below 1000 FT AGL until 0900, then 3400 ft A.GL
until 1100, then 5800 ft AGL until 1700, then
3300 ft AGL.
Transport winds.....Southwest 13 to 21 mph until 1100. West after
1700.
Smoke dispersal.....Poor until 1000, then good until 1100, then
very good until 1600, then good until 1700,
then fair.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........18 18 21 18 23 14 17 23 17 10 7 6
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0
Temp............29 27 29 34 43 46 50 52 52 53 52 49
RH..............78 85 78 78 60 53 46 39 38 36 36 42
20 FT wind dir..S S SW SW SW SW SW SW SW SW SW SW
20 FT wind spd..13 13 12 12 13 15 17 18 17 17 15 10
20 FT wind gust.21 21 18 18 21 24 29 35 34 32 28 21
Mix hgt (kft)...0.6 0.6 0.6 2.1 3.7 4.9 5.4 5.9 5.9 5.6 4.7 3.3
Transp wind dir.SW SW SW W W W W W W W W W
Transp wind spd.18 15 13 14 21 25 28 26 26 25 22 18
Vrate kt-ft/1K..9 7 7 26 67 107 130 136 136 123 89 52
SmokeDispersion.P P P P G VG VG VG VG VG G F
.FORECAST DAYS 3 THROUGH 4...
.THURSDAY...
Mostly clear. Lows in the lower 20s. Highs in the upper 50s.
South winds around 5-10 mph with gusts up to 20 mph.
.FRIDAY...
Mostly cloudy. Lows in the mid 20s. Highs in the upper 50s.
Variable winds less than 10 mph.
$$
Forecaster...Varela
Requested by...Sam Parsons
Type of request...PRESCRIBED
.TAG 2624661.0/BOU
.DELDT 10/27/26
.FormatterVersion 2.0.0
.EMAIL samuel.parsons@state.co.us