Today...Mostly sunny. A 10 percent chance of thunderstorms in the late morning and afternoon. Highs around 77 on the north rim to around 104 along the Colorado River. Light winds.

Tonight...Mostly clear. A 10 percent chance of thunderstorms in the evening. Lows around 47 on the north rim to around 65 along the Colorado River. Light winds.

Monday...Mostly sunny. Highs around 78 on the north rim to around 106 along the Colorado River. Light winds becoming southwest around 15 mph in the afternoon.

Monday Night...Mostly clear. Lows 47 to 56. Southwest winds around 15 mph in the evening becoming light.

Tuesday...Mostly sunny with a 10 percent chance of thunderstorms. Highs 80 to 90. Southwest winds 15 to 20 mph.

Tuesday Night...Partly cloudy. Lows around 49 on the north rim to around 68 along the Colorado River.

Wednesday...Partly cloudy with a 10 percent chance of thunderstorms. Highs around 77 on the north rim to around 103 along the Colorado River. Lows around 49 on the north rim to around 68 along the Colorado River.

Wednesday Night...Partly cloudy with a 10 percent chance of thunderstorms. Highs around 77 on the north rim to around 103 along the Colorado River. Lows around 49 on the north rim to around 68 along the Colorado River.

Thursday...Partly cloudy with a 20 percent chance of thunderstorms. Highs around 78 on the north rim to around 105 along the Colorado River. Lows around 49 on the north rim to around 68 along the Colorado River.

Friday...Partly cloudy with a 20 percent chance of thunderstorms. Highs around 78 on the north rim to around 105 along the Colorado River. Lows around 49 on the north rim to around 68 along the Colorado River.

Saturday...Partly cloudy with a 20 percent chance of thunderstorms. Highs around 78 on the north rim to around 105 along the Colorado River. Lows around 49 on the north rim to around 68 along the Colorado River.