Tonight — Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 60s. South winds 5 to 10 mph. Chance of rain 20 percent.

Tuesday — Mostly cloudy in the morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs in the lower 80s. South winds 5 to 10 mph. Chance of rain 40 percent. Tuesday night — Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 60s. South winds 5 to 10 mph. Chance of rain 50 percent.

Wednesday — Mostly cloudy with a chance of showers and thunderstorms. Highs around 80. South winds around 5 mph. Chance of rain 50 percent. Wednesday night — Partly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 50 percent.

Thursday — Partly sunny. Highs in the mid 80s. Thursday night — Partly cloudy. Lows in the lower 60s.

Friday — Partly sunny with a 30 percent chance of showers and thunderstorms. Highs in the mid 80s. Friday night—Partly cloudys. Lows in mid 60s.

Temperatures in the Lower 48 states Sunday have ranged from 37 degrees at Meacham, Ore. to 109 degrees at Okmulgee, Okla.