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McDonald Field Weather Forecast
| TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY |
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| Clear | Mostly Sunny | Partly Cloudy | Mostly Cloudy | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain | Partly Cloudy | Mostly Sunny | Clear | Mostly Sunny |
| Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 48°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 53°FLo: 12°C | Hi: 70°FHi: 21°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Lo: 48°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 46°FLo: 8°C | Hi: 71°FHi: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 800 PM PDT Sun Oct 18 2026 
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Issued: 213 PM PDT Sun Oct 18 2026
Key Messages
- Gradual cool down begins Sunday with renewed precipitation chances by the middle of next week.
- Onshore flow returns Sunday evening, providing temperature relief and increased overnight/daytime humidity values Monday through next week.
Discussion
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...Rest of Today - Monday... Clear skies today with slightly cooler temperatures. High temperatures this afternoon are on track to be in the lower to mid 80s across the Valley floor, about 3 to 7 degrees lower than yesterday, with somewhat h...