McAllen · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
McAllen & neighbors — hit play
Every city on the map carries real forecast data from the same models as its city page, refreshed several times a day. The icon is the day's overall look; the number is the afternoon high.
Next 14 days at a glance
from the model forecast
Hottest day
42°
Tue, Aug 25
Coldest night
26°
Wed, Aug 26
Days with precip
0 / 14
of 14 forecast days
Nicest day
Tue, Sep 1
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
39° 27°
3% precip chance
Sat 5 – Sun 6 Sep
39° 27°
3% precip chance
Sat 12 – Sun 13 Sep
38° 24°
typical range
Sat 19 – Sun 20 Sep
37° 24°
typical range
30 days — McAllen
14 forecast + 16 climatology
Tue · Today Sunny
42°26°4%⌄
Wind21 mph SE
Gusts30 mph
UV index11 – Extreme
Precip chance4%
Sunrise07:09
Sunset20:00
Wed · Tomorrow Sunny
40°26°3%⌄
Wind19 mph SE
Gusts27 mph
UV index11 – Extreme
Precip chance3%
Sunrise07:10
Sunset19:59
Thursday 27/8 Sunny
39°26°3%⌄
Wind20 mph SE
Gusts29 mph
UV index11 – Extreme
Precip chance3%
Sunrise07:10
Sunset19:58
Friday 28/8 Sunny
40°27°2%⌄
Wind22 mph SE
Gusts32 mph
UV index9 – Very high
Precip chance2%
Sunrise07:11
Sunset19:57
Saturday 29/8 Sunny
39°27°2%⌄
Wind21 mph SE
Gusts29 mph
UV index9 – Very high
Precip chance2%
Sunrise07:11
Sunset19:56
Sunday 30/8 Sunny
39°27°3%⌄
Wind23 mph SE
Gusts28 mph
UV index9 – Very high
Precip chance3%
Sunrise07:12
Sunset19:54
Monday 31/8 Sunny
40°27°2%⌄
Wind20 mph SE
Gusts27 mph
UV index9 – Very high
Precip chance2%
Sunrise07:12
Sunset19:53
Tuesday 1/9 Sunny
39°27°6%⌄
Wind17 mph SE
Gusts23 mph
UV index9 – Very high
Precip chance6%
Sunrise07:12
Sunset19:52
Wednesday 2/9 Sunny
40°27°9%⌄
Wind20 mph SE
Gusts26 mph
UV index9 – Very high
Precip chance9%
Sunrise07:13
Sunset19:51
Thursday 3/9 Sunny
40°26°3%⌄
Wind22 mph SE
Gusts29 mph
UV index10 – Very high
Precip chance3%
Sunrise07:13
Sunset19:50
Friday 4/9 Sunny
40°26°4%⌄
Wind20 mph SE
Gusts29 mph
UV index9 – Very high
Precip chance4%
Sunrise07:14
Sunset19:49
Saturday 5/9 Sunny
39°27°3%⌄
Wind21 mph SE
Gusts32 mph
UV index9 – Very high
Precip chance3%
Sunrise07:14
Sunset19:48
Sunday 6/9 Sunny
39°27°3%⌄
Wind24 mph SE
Gusts33 mph
UV index9 – Very high
Precip chance3%
Sunrise07:15
Sunset19:47
Monday 7/9 Sunny
39°27°3%⌄
Wind23 mph SE
Gusts32 mph
UV index9 – Very high
Precip chance3%
Sunrise07:15
Sunset19:46
Tuesday 8/9 Light rain (climatological)
38°25°1.1 mm⌄
Day≈35–41°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 9/9 Partly cloudy (climatological)
39°26°20%⌄
Day≈36–42°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 10/9 Partly cloudy (climatological)
40°27°20%⌄
Day≈37–43°
Night≈24–30°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 11/9 Light rain (climatological)
38°26°0.8 mm⌄
Day≈35–41°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
38°26°20%⌄
Day≈35–41°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
36°24°20%⌄
Day≈33–39°
Night≈21–27°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
37°25°1.7 mm⌄
Day≈34–40°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
39°26°20%⌄
Day≈36–42°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
39°26°20%⌄
Day≈36–42°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
42°28°1.5 mm⌄
Day≈39–45°
Night≈25–31°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
39°27°20%⌄
Day≈36–42°
Night≈24–30°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
36°24°20%⌄
Day≈33–39°
Night≈21–27°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
37°25°1.9 mm⌄
Day≈34–40°
Night≈22–28°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
38°26°20%⌄
Day≈35–41°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
40°27°20%⌄
Day≈37–43°
Night≈24–30°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
39°26°1.5 mm⌄
Day≈36–42°
Night≈23–29°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
How does a 30-day outlook work?
The first 14 days are a live model forecast. The back half of the month shows the typical range for those dates — useful for planning, not a literal prediction.
First 14 days: a real forecast, blended from NBM, ECMWF and GFS runs. Trust it most inside three days; by the second week treat it as a lean, not a promise.
Rest of the month: past day 14 we stop pretending to forecast and switch to the climate corridor — the range those dates have produced over three decades computed directly for McAllen, with mild week-to-week wiggle.
Good question for this page: "Is late August usually humid in Chicago?" Bad question: "Do I need an umbrella on the 29th?" — three weeks out no one knows, and that's the honest answer.