Prosser · first 14 days — live forecast · rest of month — climate corridor
🗺️ 14-day forecast map
Prosser & 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
87°
Tue, Sep 1
Coldest night
52°
Sun, Aug 30
Days with precip
2 / 14
of 14 forecast days
Nicest day
Sun, Aug 30
mild, dry, light wind
The next 4 weekends
plan ahead
Sat 29 – Sun 30 Aug
75° 52°
2% precip chance
Sat 5 – Sun 6 Sep
74° 60°
8% precip chance
Sat 12 – Sun 13 Sep
72° 49°
typical range
Sat 19 – Sun 20 Sep
69° 48°
typical range
30 days — Prosser
14 forecast + 16 climatology
Fri · Today Sunny
86°58°1%⌄
Wind10 mph W
Gusts18 mph
UV index6 – High
Precip chance1%
Sunrise06:14
Sunset19:45
Sat · Tomorrow Sunny
75°55°2%⌄
Wind17 mph W
Gusts26 mph
UV index6 – Moderate
Precip chance2%
Sunrise06:15
Sunset19:44
Sunday 30/8 Sunny
74°52°2%⌄
Wind8 mph SE
Gusts16 mph
UV index6 – Moderate
Precip chance2%
Sunrise06:17
Sunset19:42
Monday 31/8 Partly cloudy
80°56°3%⌄
Wind7 mph NE
Gusts14 mph
UV index5 – Moderate
Precip chance3%
Sunrise06:18
Sunset19:40
Tuesday 1/9 Mostly cloudy
87°62°4%⌄
Wind21 mph W
Gusts31 mph
UV index6 – Moderate
Precip chance4%
Sunrise06:19
Sunset19:38
Wednesday 2/9 Sunny
69°55°2.4 mm⌄
Wind17 mph W
Gusts23 mph
UV index5 – Moderate
Precip chance60%
Sunrise06:20
Sunset19:36
Thursday 3/9 Sunny
71°55°1.3 mm⌄
Wind13 mph S
Gusts13 mph
UV index5 – Moderate
Precip chance57%
Sunrise06:22
Sunset19:34
Friday 4/9 Mostly cloudy
75°53°8%⌄
Wind12 mph NE
Gusts15 mph
UV index6 – High
Precip chance8%
Sunrise06:23
Sunset19:32
Saturday 5/9 Mostly cloudy
71°61°7%⌄
Wind19 mph NE
Gusts38 mph
UV index6 – High
Precip chance7%
Sunrise06:24
Sunset19:30
Sunday 6/9 Mostly cloudy
74°60°8%⌄
Wind17 mph N
Gusts36 mph
UV index5 – Moderate
Precip chance8%
Sunrise06:26
Sunset19:28
Monday 7/9 Mostly cloudy
73°58°6%⌄
Wind9 mph NE
Gusts16 mph
UV index6 – High
Precip chance6%
Sunrise06:27
Sunset19:26
Tuesday 8/9 Mostly cloudy
76°58°0.9 mm⌄
Wind8 mph SE
Gusts15 mph
UV index6 – High
Precip chance39%
Sunrise06:28
Sunset19:25
Wednesday 9/9 Sunny
73°52°1%⌄
Wind15 mph NE
Gusts20 mph
UV index6 – High
Precip chance1%
Sunrise06:29
Sunset19:23
Thursday 10/9 Sunny
77°53°1%⌄
Wind7 mph NE
Gusts19 mph
UV index7 – High
Precip chance1%
Sunrise06:31
Sunset19:21
Friday 11/9 Light rain (climatological)
66°47°0.8 mm⌄
Day≈61–71°
Night≈42–53°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 12/9 Partly cloudy (climatological)
72°51°20%⌄
Day≈67–78°
Night≈46–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 13/9 Partly cloudy (climatological)
68°49°20%⌄
Day≈63–73°
Night≈43–54°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 14/9 Light rain (climatological)
70°50°1.4 mm⌄
Day≈65–75°
Night≈44–55°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 15/9 Partly cloudy (climatological)
63°46°20%⌄
Day≈57–68°
Night≈40–51°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 16/9 Partly cloudy (climatological)
63°46°20%⌄
Day≈58–69°
Night≈40–51°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 17/9 Light rain (climatological)
60°44°1.2 mm⌄
Day≈55–65°
Night≈38–49°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 18/9 Partly cloudy (climatological)
68°49°20%⌄
Day≈62–73°
Night≈43–54°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 19/9 Partly cloudy (climatological)
67°48°20%⌄
Day≈62–73°
Night≈43–54°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Sunday 20/9 Light rain (climatological)
69°49°1.3 mm⌄
Day≈63–74°
Night≈44–55°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Monday 21/9 Partly cloudy (climatological)
71°51°20%⌄
Day≈66–76°
Night≈45–56°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Tuesday 22/9 Partly cloudy (climatological)
65°47°20%⌄
Day≈60–71°
Night≈42–52°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Wednesday 23/9 Light rain (climatological)
60°44°1.9 mm⌄
Day≈55–66°
Night≈38–49°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Thursday 24/9 Partly cloudy (climatological)
65°47°20%⌄
Day≈60–71°
Night≈42–53°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Friday 25/9 Partly cloudy (climatological)
66°47°20%⌄
Day≈61–72°
Night≈42–53°
Precip≈0.6 in / September
(climatological)Typical range for these dates · 1991–2020
Saturday 26/9 Light rain (climatological)
67°48°2.0 mm⌄
Day≈62–73°
Night≈43–54°
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 Prosser, 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.