Observed 5:50 AM MST at KTUS

Summit, AZ weather

Partly cloudy and 55°13°.

Mostly agree

Now 55°13°

Partly cloudy

Wind: 7 mph11 km/h; From the southeast. 58–10 mph16 km/h through 6 PM
Dew point: 45°7°; Comfortable
UV index: 0Low; High 12–2 PM · peak 6
Air quality: 48Good; Main pollutant: PM2.5 (fine particles)
Pressure: 29.94 inHg1014 hPa; Rising slowly · +0.04 inHg+1.3 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

9°5° cooler than this time yesterday (65°18° then, 56°13° now)

Good hours for

Above 70°21° today by 10 AM
High 78°26° today at 2 PM
Below 70°21° tonight after 7 PM

This morningUp to 73°23° by 11 AM · Clear
This afternoonNear 75°24° · Clear
TonightDown to 54°12° by 5 AM · Clear
Tomorrow morningUp to 74°23° by 11 AM · Clear
Tomorrow afternoonNear 77°25° · Clear
Tomorrow nightDown to 54°12° by 4 AM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 6a	Clear	54°12° (likely 53°12° to 58°14°)	55°13°	0%	5 mph8 km/h from SSE, gusts 8 mph12 km/h	74%	15%	0
Sat 7a	Sunny	55°13° (likely 52°11° to 58°14°)	55°13°	0%	5 mph8 km/h from SSE, gusts 7 mph12 km/h	73%	12%	0
Sat 8a	Sunny	59°15° (likely 56°13° to 62°17°)	59°15°	0%	6 mph10 km/h from SSE, gusts 6 mph10 km/h	64%	12%	1
Sat 9a	Sunny	66°19° (likely 61°16° to 66°19°)	66°19°	0%	5 mph8 km/h from S, gusts 8 mph12 km/h	50%	9%	2
Sat 10a	Sunny	70°21° (likely 65°18° to 70°21°)	70°21°	0%	5 mph8 km/h from SSW, gusts 9 mph15 km/h	43%	3%	4
Sat 11a	Sunny	73°23° (likely 69°21° to 73°23°)	73°23°	0%	5 mph8 km/h from SSW, gusts 12 mph20 km/h	37%	7%	5
Sat 12p	Sunny	75°24° (likely 71°22° to 75°24°)	75°24°	0%	6 mph10 km/h from SW, gusts 14 mph22 km/h	35%	8%	6
Sat 1p	Sunny	77°25° (likely 73°23° to 77°25°)	77°25°	0%	8 mph13 km/h from WSW, gusts 16 mph25 km/h	31%	14%	6
Sat 2p	Sunny	78°26° (likely 73°23° to 78°26°)	78°26°	0%	9 mph14 km/h from WSW, gusts 16 mph27 km/h	29%	15%	5
Sat 3p	Mostly sunny	78°26° (likely 73°23° to 78°26°)	78°26°	0%	10 mph16 km/h from W, gusts 17 mph28 km/h	29%	18%	4
Sat 4p	Mostly sunny	77°25° (likely 73°23° to 77°25°)	77°25°	0%	10 mph16 km/h from W, gusts 14 mph22 km/h	30%	12%	3
Sat 5p	Mostly sunny	75°24° (likely 70°21° to 75°24°)	75°24°	0%	9 mph14 km/h from WNW, gusts 14 mph22 km/h	33%	25%	1
Sat 6p	Clear	72°22° (likely 66°19° to 72°22°)	72°22°	0%	7 mph11 km/h from WNW, gusts 12 mph19 km/h	36%	24%	0
Sat 7p	Clear	68°20° (likely 63°17° to 69°21°)	69°21°	0%	5 mph8 km/h from WNW, gusts 9 mph14 km/h	41%	21%	0
Sat 8p	Mostly clear	66°19° (likely 61°16° to 67°19°)	66°19°	0%	3 mph5 km/h from WNW, gusts 6 mph10 km/h	44%	19%	0
Sat 9p	Mostly clear	63°17° (likely 59°15° to 65°18°)	63°17°	0%	3 mph5 km/h from S, gusts 4 mph7 km/h	52%	11%	0
Sat 10p	Clear	62°17° (likely 57°14° to 64°18°)	62°17°	0%	3 mph5 km/h from S, gusts 5 mph8 km/h	56%	12%	0
Sat 11p	Mostly clear	61°16° (likely 56°13° to 62°17°)	61°16°	0%	3 mph5 km/h from S, gusts 7 mph11 km/h	57%	18%	0
Sun 12a	Clear	60°16° (likely 55°13° to 61°16°)	60°16°	0%	3 mph5 km/h from S, gusts 6 mph10 km/h	60%	10%	0
Sun 1a	Clear	58°14° (likely 54°12° to 61°16°)	58°14°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	62%	13%	0
Sun 2a	Clear	58°14° (likely 53°12° to 60°16°)	58°14°	0%	2 mph3 km/h from SE, gusts 6 mph9 km/h	63%	16%	0
Sun 3a	Clear	56°13° (likely 52°11° to 59°15°)	56°13°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	66%	14%	0
Sun 4a	Clear	55°13° (likely 51°11° to 57°14°)	55°13°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	67%	15%	0
Sun 5a	Clear	54°12° (likely 51°11° to 57°14°)	54°12°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	67%	16%	0
Sun 6a	Clear	54°12° (likely 50°10° to 57°14°)	54°12°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	68%	14%	0
Sun 7a	Sunny	54°12° (likely 50°10° to 58°14°)	54°12°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	67%	8%	0
Sun 8a	Sunny	58°14° (likely 54°12° to 61°16°)	59°15°	0%	5 mph8 km/h from SE, gusts 6 mph10 km/h	58%	9%	1
Sun 9a	Sunny	66°19° (likely 60°16° to 66°19°)	66°19°	0%	3 mph5 km/h from ESE, gusts 6 mph9 km/h	45%	0%	2
Sun 10a	Sunny	70°21° (likely 64°18° to 70°21°)	70°21°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	39%	0%	4
Sun 11a	Sunny	74°23° (likely 67°19° to 74°23°)	74°23°	0%	2 mph3 km/h from NE, gusts 5 mph8 km/h	35%	0%	5
Sun 12p	Sunny	76°24° (likely 70°21° to 76°24°)	76°24°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	32%	0%	6
Sun 1p	Sunny	78°26° (likely 72°22° to 78°26°)	78°26°	0%	3 mph5 km/h from N, gusts 6 mph10 km/h	29%	0%	6
Sun 2p	Sunny	79°26° (likely 73°23° to 79°26°)	79°26°	0%	5 mph8 km/h from N, gusts 7 mph12 km/h	27%	0%	5
Sun 3p	Sunny	79°26° (likely 74°23° to 79°26°)	79°26°	0%	6 mph10 km/h from NNW, gusts 9 mph14 km/h	27%	0%	4
Sun 4p	Sunny	78°26° (likely 73°23° to 78°26°)	79°26°	0%	8 mph13 km/h from NNW, gusts 9 mph15 km/h	28%	40%	3
Sun 5p	Sunny	77°25° (likely 71°22° to 77°25°)	77°25°	0%	9 mph14 km/h from NNW, gusts 11 mph17 km/h	30%	40%	1
Sun 6p	Clear	74°23° (likely 66°19° to 74°23°)	74°23°	0%	7 mph11 km/h from NNW, gusts 10 mph17 km/h	34%	40%	0
Sun 7p	Clear	70°21° (likely 63°17° to 70°21°)	71°22°	0%	6 mph10 km/h from NNW, gusts 10 mph15 km/h	37%	40%	0
Sun 8p	Mostly clear	67°19° (likely 60°16° to 67°19°)	67°19°	0%	5 mph8 km/h from NW, gusts 9 mph14 km/h	41%	31%	0
Sun 9p	Mostly clear	65°18° (likely 58°14° to 65°18°)	65°18°	0%	3 mph5 km/h from WNW, gusts 8 mph13 km/h	45%	15%	0
Sun 10p	Mostly clear	63°17° (likely 56°13° to 63°17°)	63°17°	0%	3 mph5 km/h from SW, gusts 8 mph12 km/h	50%	19%	0
Sun 11p	Clear	61°16° (likely 54°12° to 62°17°)	61°16°	0%	3 mph5 km/h from S, gusts 5 mph8 km/h	55%	39%	0
Mon 12a	Partly cloudy	59°15° (likely 50°10° to 63°17°)	59°15°	0%	3 mph5 km/h from S, gusts 6 mph9 km/h	58%	47%	0
Mon 1a	Partly cloudy	58°14° (likely 50°10° to 62°17°)	58°14°	0%	2 mph3 km/h from SSE, gusts 5 mph8 km/h	61%	48%	0
Mon 2a	Partly cloudy	57°14° (likely 49°9° to 61°16°)	57°14°	0%	2 mph3 km/h from SE, gusts 4 mph7 km/h	62%	52%	0
Mon 3a	Partly cloudy	55°13° (likely 49°9° to 60°16°)	55°13°	0%	2 mph3 km/h from SE, gusts 4 mph7 km/h	63%	18%	0
Mon 4a	Partly cloudy	54°12° (likely 48°9° to 58°14°)	54°12°	0%	2 mph3 km/h from SE, gusts 5 mph7 km/h	64%	15%	0
Mon 5a	Clear	54°12° (likely 48°9° to 58°14°)	54°12°	0%	3 mph5 km/h from SE, gusts 5 mph8 km/h	63%	17%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Mostly sunny. High 78°26°, low 53°12°. Typical 84°29° / 51°11°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 78°26°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 66°19°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 54°12°
  Dry
Official NWS forecast
Today: Sunny, with a high near 78. Southwest wind 5 to 10 mph.
Tonight: Mostly clear, with a low around 53. South wind 2 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 78°26°).
High, likely
74°23°–78°26°
Low, likely
52°11°–57°14°
Typical high / low
84°29° / 51°11°
Wind
14 mph23 km/h, gusts 22 mph36 km/h
UV peak
6
Tomorrow, Oct 25. Cloudy. High 79°26°, low 54°12°. Typical 84°29° / 51°11°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 58°14°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 79°26°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 54°12°
  Dry
Official NWS forecast
Day: Sunny, with a high near 79. North northeast wind 2 to 9 mph.
Night: Mostly clear, with a low around 54. South southwest wind 2 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
74°23°–79°26°
Low, likely
50°10°–57°14°
Typical high / low
84°29° / 51°11°
Wind
10 mph15 km/h, gusts 16 mph26 km/h
UV peak
6
Monday, Oct 26. Cloudy. High 84°29°, low 57°14°. Typical 84°29° / 50°10°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 59°15°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 80°27°
  Dry
3. Evening
  6 PM–midnight
  Clear, 67°19°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 57°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 84. East northeast wind 3 to 7 mph.
Night: Clear, with a low around 57.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
78°26°–84°29°
Low, likely
49°9°–57°14°
Typical high / low
84°29° / 50°10°
Wind
9 mph14 km/h
UV peak
6
Tuesday, Oct 27. Sunny. High 86°30°, low 60°16°. Typical 83°28° / 50°10°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 83°28°
  Dry
3. Evening
  6 PM–midnight
  Clear, 68°20°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 56°14°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 86.
Night: Mostly clear, with a low around 60.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
80°27°–86°30°
Low, likely
52°11°–60°16°
Typical high / low
83°28° / 50°10°
Wind
9 mph15 km/h, gusts 20 mph31 km/h
UV peak
6
Wednesday, Oct 28. Partly sunny. High 86°30°, low 61°16°. Typical 83°28° / 50°10°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 83°28°
  Dry
3. Evening
  6 PM–midnight
  Clear, 67°20°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 58°15°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 86.
Night: Mostly cloudy, with a low around 61.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
80°27°–87°31°
Low, likely
50°10°–62°17°
Typical high / low
83°28° / 50°10°
Wind
13 mph20 km/h
UV peak
5
Thursday, Oct 29. Showers. High 83°28°, low 61°16°. Typical 83°28° / 49°9°. Rain 0.01 in0.3 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 62°16°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 83°29°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 71°22°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 60°16°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers after 11am. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Night: A chance of rain showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
81°27°–86°30°
Low, likely
52°11°–64°18°
Typical high / low
83°28° / 49°9°
Wind
14 mph23 km/h, gusts 21 mph33 km/h
UV peak
4
Friday, Oct 30. Showers. High 78°26°, low 58°14°. Typical 82°28° / 49°9°. Rain 0.18 in4.6 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 63°17°
  20% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Cloudy, 77°25°
  40% chance · 0.06 in1.4 mm
3. Evening
  6 PM–midnight
  Drizzle, 64°18°
  30% chance · 0.04 in1.1 mm
4. Overnight
  midnight–6 AM
  Cloudy, 59°15°
  30% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers before 5pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
73°23°–79°26°
Low, likely
54°12°–62°17°
Typical high / low
82°28° / 49°9°
Wind
21 mph33 km/h, gusts 29 mph47 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 72°22°, low 58°14°. Typical 82°28° / 49°9°. Rain 0.18 in4.6 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 62°17°
  30% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Cloudy, 73°23°
  30% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Cloudy, 66°19°
  30% chance
4. Overnight
  midnight–6 AM
  Cloudy, 58°15°
  40% chance
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
68°20°–76°24°
Low, likely
53°12°–59°15°
Typical high / low
82°28° / 49°9°
Wind
18 mph29 km/h, gusts 33 mph54 km/h
UV peak
6
Sunday, Nov 1. Cloudy. High 70°21°, low 57°14°. Typical 82°28° / 48°9°. Rain 0.24 in6.1 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 61°16°
  40% chance · 0.02 in0.6 mm
2. Afternoon
  noon–6 PM
  Partly sunny, 72°22°
  40% chance · 0.05 in1.2 mm
3. Evening
  6 PM–midnight
  Cloudy, 65°18°
  40% chance · 0.13 in3.2 mm
4. Overnight
  midnight–6 AM
  Cloudy, 56°13°
  30% chance · 0.03 in0.8 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–80°27°
Low, likely
52°11°–64°18°
Typical high / low
82°28° / 48°9°
Wind
11 mph17 km/h, gusts 24 mph39 km/h
UV peak
6
Monday, Nov 2. Cloudy. High 73°23°, low 58°14°. Typical 81°27° / 48°9°. Rain 0.15 in3.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 60°15°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 74°23°
  Dry
3. Evening
  6 PM–midnight
  Clear, 67°19°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–87°31°
Low, likely
51°11°–65°18°
Typical high / low
81°27° / 48°9°
Wind
24 mph38 km/h
UV peak
6

10 days15 days30 days

The outlook

Today
Dry, high 78°, low 53°.
Tomorrow
Dry, high 79°, low 54°.
Monday
Dry, high 84°, low 57°, warming up.
Rest of week
Mostly dry, highs 70–86°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (TWC) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

Santa Cruz River at Congress Street

11 mi

Below flood stage

Level: -0.5 ft

Forecast peak -0.5 ft Sat 6 AM

Reading from Sat 4:45 AM · NWS gauge page

Pantano Wash at Broadway Blvd

13 mi

Below flood stage

Level: 0.3 ft

Forecast peak 1.2 ft Sat 6 AM

Reading from Sat 4 AM · NWS gauge page

Santa Cruz River at Green Valley

13 mi

Below flood stage

Level: 1.1 ft

Forecast peak 1.6 ft Sat 6 AM

Reading from Sat 4 AM · NWS gauge page

Rillito Creek at Dodge Boulevard

15 mi

Below flood stage

Level: 3.1 ft

Forecast peak 3.5 ft Sat 6 AM

Reading from Sat 4:30 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Cooling this week

About 26% less cooling than a typical week.

This week 9Typical 12

Cooling degree days, base 65°F

Comfort

Dry air outside (dew point 45°F).

Open the windows?

Today, 9:00 AM–12:00 AM

Good stretch to open the windows.

Is this typical?

Green Valley · official normals 1991–2020 · records 1998–2026

Oct 24, today vs a typical year

Today’s expected high is 6°3° colder than typical.

Last 7 days vs normal

On average 3°1° warmer than normal (daily mean temperature).

−1°SunOct 18
+1°MonOct 19
+4°+2°TueOct 20
+7°+4°WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

Summit weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 11 h 7 min; Losing 1 min 43 s a day; shortest Dec 21, 1 h 4 min less
Golden hour: 5:07–5:56 PM; Morning 6:18–7:07 AM
Blue hour: 5:56–6:06 PM; Morning 6:09–6:18 AM; first light 6:09 AM

Stars tonight? Unknown

Cloud forecast not available for tonight.

Moon

Waxing gibbous

97% lit · growing

Today: sets 4:56 AM · rises 4:38 PM
Full moon: Oct 25
New moon: Nov 9

Looking northeast from Summit. The highest point on the skyline is about 10,700 ft, 78 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Summit, AZ weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Santa Cruz River at Congress Street

Pantano Wash at Broadway Blvd

Santa Cruz River at Green Valley

Rillito Creek at Dodge Boulevard

For your home

Cooling this week

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Unknown

Moon