FPUS65 KBOI 180831 SFTBOI IDZ011>016-028>030-ORZ061>064-182300- Tabular State Forecast for Southwest Idaho/Southeast Oregon National Weather Service Boise ID 230 AM MDT Mon May 18 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 Today Tue Wed Thu Fri Sat Sun May 18 May 19 May 20 May 21 May 22 May 23 May 24 ...Southwest Idaho Valleys... Boise Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /68 39/71 45/75 46/78 50/80 50/85 53/85 /00 00/00 00/00 00/00 00/00 00/00 00/00 Caldwell Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /69 39/72 43/76 45/79 49/82 49/86 51/85 /00 00/00 00/00 00/00 00/00 00/00 00/00 Emmett Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /72 38/74 46/78 46/82 49/84 50/88 52/88 /00 00/00 00/00 00/00 00/00 00/00 00/00 Marsing Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /69 41/73 45/76 48/79 51/82 51/86 53/86 /00 00/00 00/00 00/00 00/00 00/00 00/00 Mountain Home Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /68 36/72 40/76 43/79 45/82 45/87 48/87 /10 00/00 00/00 00/00 00/00 00/00 00/00 Nampa Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /69 39/72 44/76 45/79 49/82 49/86 51/86 /00 00/00 00/00 00/00 00/00 00/00 00/00 Payette Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /71 39/74 46/77 47/80 49/83 50/86 51/86 /00 00/00 00/00 00/00 00/00 00/00 00/00 Weiser Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /70 38/73 44/76 45/80 48/82 49/86 50/86 /00 00/00 00/00 00/00 00/00 00/00 00/00 Wildlife Refuge/Deer Flat /average/ Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /69 41/72 46/75 48/78 50/81 51/85 53/85 /00 00/00 00/00 00/00 00/00 00/00 00/00 ...West Central and Boise Mountains... Cascade Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /58 29/62 33/65 36/71 37/72 38/76 40/76 /10 10/00 00/00 00/00 00/00 00/00 00/00 Council Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /67 37/70 43/72 43/77 45/79 46/82 48/82 /00 00/00 00/00 00/00 00/00 00/00 00/00 Idaho City Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /64 28/66 32/70 35/76 37/77 37/82 39/83 /10 10/00 00/00 00/00 00/00 00/00 00/00 McCall Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /56 27/60 32/62 33/69 36/70 38/73 39/74 /10 10/00 00/00 00/00 00/00 00/00 00/00 Payette State River Mgmt Area/Crouch near 3500 ft MSL/average/ Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /65 34/67 39/71 41/77 43/79 43/82 45/83 /10 10/00 00/00 00/00 00/00 00/00 00/00 ...Southeast Oregon... Baker City Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /64 30/67 36/69 36/74 42/77 42/80 43/79 /10 10/00 00/00 00/00 00/00 00/00 00/00 Burns Ptcldy Sunny Ptcldy Sunny Sunny Sunny Sunny /64 29/69 34/73 34/77 39/79 40/81 40/81 /20 10/00 00/00 00/00 00/00 00/00 00/00 Rome Airport KREO Ptcldy Sunny Ptcldy Sunny Sunny Sunny Sunny /64 31/70 38/76 38/80 44/83 45/86 46/87 /00 00/00 00/00 00/00 00/00 00/00 00/00 Jordan Valley/Rome/Owyhee Canyon near 4000 ft MSL/average/ Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /62 33/68 40/73 39/77 45/80 46/84 47/84 /00 00/00 00/00 00/00 00/00 00/00 00/00 Malheur Wildlife Refuge/Frenchglen near 4000 ft MSL/average/ Ptcldy Sunny Ptcldy Sunny Sunny Sunny Sunny /62 32/66 38/72 39/74 43/76 44/79 44/79 /10 10/00 00/00 00/00 00/00 00/00 00/00 Ontario Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /71 39/74 46/77 47/80 50/83 50/86 52/86 /00 00/00 00/00 00/00 00/00 00/00 00/00 Steens Mountain National Recreation Lands near 6000 ft MSL/avg/ Ptcldy Sunny Ptcldy Sunny Sunny Sunny Sunny /54 34/60 41/66 42/69 46/72 48/74 47/75 /20 10/00 00/00 00/00 00/00 00/00 00/00 ...South Central Idaho... Fairfield Sunny Ptcldy Ptcldy Sunny Sunny Sunny Sunny /59 25/62 28/65 33/71 36/72 36/77 39/79 /10 00/00 00/00 00/00 00/00 00/00 00/00 Glenns Ferry Sunny Sunny Ptcldy Sunny Sunny Sunny Sunny /68 36/73 39/77 45/81 45/83 46/89 48/89 /10 10/00 00/00 00/00 00/00 00/00 00/00 Gooding Sunny Sunny Sunny Sunny Sunny Sunny Sunny /62 34/67 37/72 42/75 42/78 43/82 45/83 /00 00/00 00/00 00/00 00/00 00/00 00/00 Jerome Sunny Sunny Sunny Sunny Sunny Sunny Sunny /61 35/65 39/69 44/74 45/77 45/82 48/83 /00 00/00 00/00 10/00 00/00 00/00 00/00 Twin Falls Sunny Sunny Sunny Sunny Sunny Sunny Sunny /61 38/66 42/70 46/74 47/77 49/82 51/83 /00 00/00 00/00 10/00 00/00 00/00 00/00 $$