FPMY60 PGUM 190555 SFTGUM GUZ001-MPZ003-191900- Tabular State Forecast for Guam National Weather Service Tiyan GU 355 PM ChST Tue May 19 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 Wed Thu Fri Sat Sun Mon Tue May 20 May 21 May 22 May 23 May 24 May 25 May 26 ...GUAM... Tiyan Ptcldy Ptcldy Ptsunny Ptsunny Ptsunny Shwrs Shwrs 76/88 78/87 78/88 78/87 78/86 81/84 81/86 20/20 20/20 30/30 30/30 30/30 50/50 40/50 ...NORTHERN MARIANA ISLANDS... Saipan Airport Ptcldy Ptcldy Ptsunny Ptsunny Ptsunny Shwrs Ptsunny 77/88 76/87 76/88 76/88 76/86 80/84 80/85 20/20 20/20 30/30 30/30 30/40 50/50 40/30 $$