560
FNMY50 PGUM 171752
FWFGUM

Fire Weather Planning Forecast for Guam
National Weather Service Tiyan GU
352 AM ChST Tue Nov 18 2025

.Discussion...
Sufficient wetting rains fell yesterday at the airport to perfectly
offset the drought factor, leaving the KBDI at 190. The overall fire
danger remains low. A generally-dry trade-wind pattern will continue
through the week with a steady trades. By late week, surging trades
will be accompanied by increasing showers.

GUZ001-181800-
Guam-
352 AM ChST Tue Nov 18 2025

                      Today        Tonight      Wed

Cloud Cover           Pcldy        Pcldy        Pcldy
Precip Type           Showers      Showers      Showers
Chance Rain (%)       20           10           10
Temp                  87           76           87
RH %                  72           99           71
20FtWnd-Val/AM(mph)   E  9                      E 10
20FtWnd-Rdg/PM(mph)   E 10         E 10         E 11
Mixing Hgt(ft-msl)    6394         136          6180
Transport Wnd (mph)   E 26         E  7         E 28

$$

.Forecast for Days 3 Through 7...

.WEDNESDAY NIGHT...Partly cloudy with isolated showers. Lows in
the upper 70s. East winds 10 to 15 mph.
.THURSDAY...Mostly sunny. Highs in the upper 80s. East winds
10 to 15 mph.
.THURSDAY NIGHT...Partly cloudy with a slight chance of showers.
Lows in the upper 70s. East winds 10 to 15 mph.
.FRIDAY...Mostly sunny with a slight chance of showers. Highs in
the mid 80s. East winds 10 to 15 mph.
.FRIDAY NIGHT...Partly cloudy with a slight chance of showers.
Lows in the upper 70s. East winds 10 to 15 mph.
.SATURDAY...Partly sunny with chance of showers. Highs in the mid
80s. East winds 10 to 15 mph.
.SATURDAY NIGHT...Mostly cloudy with chance of showers. Lows in
the upper 70s. East winds 10 to 15 mph.
.SUNDAY...Mostly sunny with a slight chance of showers. Highs in
the upper 80s. East winds 10 to 15 mph.
.SUNDAY NIGHT...Partly cloudy with a slight chance of showers.
Lows in the upper 70s. East winds 10 to 15 mph.
.MONDAY...Mostly sunny with a slight chance of showers. Highs in
the upper 80s. East winds 10 to 15 mph.

$$