FPMY60 PGUM 200510 SFTGUM GUZ001-MPZ003-201900- Tabular State Forecast for Guam National Weather Service Tiyan GU 310 PM ChST Wed May 20 2026 ROWS INCLUDE... Daily predominant daytime weather 6AM-6PM Forecast temperatures...early morning low/daytime high Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM - indicates temperatures below zero MM indicates missing data FCST FCST FCST FCST FCST FCST FCST Thu Fri Sat Sun Mon Tue Wed May 21 May 22 May 23 May 24 May 25 May 26 May 27 ...GUAM... Tiyan Ptsunny Ptcldy Ptcldy Ptsunny Mocldy Ptsunny Ptsunny 78/87 78/88 78/87 78/86 77/86 77/86 79/86 20/30 30/20 20/20 30/40 40/40 50/30 30/30 ...NORTHERN MARIANA ISLANDS... Saipan Airport Ptsunny Ptcldy Ptcldy Ptsunny Mocldy Ptsunny Ptsunny 76/87 76/88 76/88 76/86 76/86 76/85 80/86 20/30 30/20 20/20 20/20 30/40 50/30 30/30 $$