Mattawa · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Mattawa & 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
85°
Thu, Sep 10
Coldest night
50°
Sat, Sep 12
Days with precip
1 / 14
of 14 forecast days
Nicest day
Sun, Sep 6
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 5 – Sun 6 Sep
69° 55°
36% precip chance
Sat 12 – Sun 13 Sep
70° 50°
17% precip chance
Sat 19 – Sun 20 Sep
79° 57°
typical range
Sat 26 – Sun 27 Sep
77° 55°
typical range
30 days — Mattawa
14 forecast + 16 climatology
Thu · Today Showers
69°51°1.6 mm⌄
Wind14 mph SW
Gusts26 mph
UV index5 – Moderate
Precip chance57%
Sunrise06:22
Sunset19:35
Fri · Tomorrow Mostly cloudy
67°52°0.1 mm⌄
Wind10 mph SE
Gusts19 mph
UV index1 – Low
Precip chance17%
Sunrise06:23
Sunset19:33
Saturday 5/9 Mostly cloudy
68°56°0.4 mm⌄
Wind9 mph E
Gusts14 mph
UV index4 – Moderate
Precip chance36%
Sunrise06:24
Sunset19:31
Sunday 6/9 Mostly cloudy
69°55°7%⌄
Wind11 mph NE
Gusts22 mph
UV index4 – Moderate
Precip chance7%
Sunrise06:25
Sunset19:29
Monday 7/9 Sunny
78°56°1%⌄
Wind15 mph W
Gusts29 mph
UV index7 – High
Precip chance1%
Sunrise06:27
Sunset19:28
Tuesday 8/9 Mostly cloudy
75°57°6%⌄
Wind11 mph W
Gusts21 mph
UV index5 – Moderate
Precip chance6%
Sunrise06:28
Sunset19:26
Wednesday 9/9 Sunny
83°60°1%⌄
Wind10 mph W
Gusts19 mph
UV index7 – High
Precip chance1%
Sunrise06:29
Sunset19:24
Thursday 10/9 Sunny
85°63°3%⌄
Wind18 mph W
Gusts32 mph
UV index7 – High
Precip chance3%
Sunrise06:31
Sunset19:22
Friday 11/9 Mostly cloudy
73°53°7%⌄
Wind29 mph SW
Gusts41 mph
UV index6 – High
Precip chance7%
Sunrise06:32
Sunset19:20
Saturday 12/9 Sunny
64°50°5%⌄
Wind27 mph SW
Gusts41 mph
UV index5 – Moderate
Precip chance5%
Sunrise06:33
Sunset19:18
Sunday 13/9 Partly cloudy
70°54°17%⌄
Wind18 mph SW
Gusts33 mph
UV index6 – High
Precip chance17%
Sunrise06:35
Sunset19:16
Monday 14/9 Sunny
74°51°2%⌄
Wind9 mph W
Gusts17 mph
UV index6 – High
Precip chance2%
Sunrise06:36
Sunset19:14
Tuesday 15/9 Mostly cloudy
82°58°6%⌄
Wind15 mph W
Gusts30 mph
UV index7 – High
Precip chance6%
Sunrise06:37
Sunset19:12
Wednesday 16/9 Mostly cloudy
79°58°5%⌄
Wind15 mph W
Gusts31 mph
UV index7 – High
Precip chance5%
Sunrise06:38
Sunset19:10
Thursday 17/9 Light rain (climatological)
73°55°0.9 mm⌄
Day≈67–78°
Night≈49–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
78°58°20%⌄
Day≈73–84°
Night≈53–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
79°58°20%⌄
Day≈73–84°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
77°57°1.2 mm⌄
Day≈72–83°
Night≈52–63°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
71°53°20%⌄
Day≈65–76°
Night≈48–59°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
67°51°20%⌄
Day≈62–73°
Night≈46–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
70°53°1.7 mm⌄
Day≈65–76°
Night≈48–58°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
77°57°20%⌄
Day≈71–82°
Night≈51–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
80°58°20%⌄
Day≈74–85°
Night≈53–64°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
77°57°0.9 mm⌄
Day≈72–82°
Night≈52–62°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 27/9 Partly cloudy (climatological)
74°55°20%⌄
Day≈69–80°
Night≈50–61°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 28/9 Partly cloudy (climatological)
74°55°20%⌄
Day≈68–79°
Night≈50–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 29/9 Light rain (climatological)
69°52°1.3 mm⌄
Day≈63–74°
Night≈47–57°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 30/9 Partly cloudy (climatological)
73°54°20%⌄
Day≈67–78°
Night≈49–60°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 1/10 Partly cloudy (climatological)
59°41°20%⌄
Day≈54–64°
Night≈36–46°
Precip≈0.6 in / October
(climatological)Typical range for these dates · 1991–2020
Friday 2/10 Light rain (climatological)
64°44°1.3 mm⌄
Day≈58–69°
Night≈38–49°
Precip≈0.6 in / October
(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 Mattawa, 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.