Freeze Warning
Ends in 1 h 44 min
When
From 11 PM this evening to 10 AM PDT Saturday.
Where
Eastern Columbia River Gorge of Oregon and Washington, Lower Columbia Basin of Oregon and Washington, Foothills of the Northern Blue Mountains of Oregon, Yakima Valley, and Foothills of the Blue Mountains of Washington.
Issued for this forecast zone · National Weather Service Pendleton OR
What, impacts and precautionsHide details
What
Sub-freezing temperatures of 25 to 32 expected.
Impacts
Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: Eastern Columbia River Gorge of Oregon; Lower Columbia Basin of Oregon; Foothills of the Northern Blue Mountains of Oregon; Eastern Columbia River Gorge of Washington; Yakima Valley; Lower Columbia Basin of Washington; Foothills of the Blue Mountains of Washington
See it on weather.gov (opens in a new tab)

Observed 7:15 AM PDT at K1S5

Prosser, WA weather

Freeze Warning. 29°−2° and clear now.

Mostly agree

Now 29°−2°

Clear · Feels like 25°−4°

Wind: 3 mph5 km/h; From the north. Light through 8 PM
Dew point: 27°−3°; Dry · up to 38°3° by 10 AM (comfortable)
Humidity: 94%; Air 29°−2°, dew point 27°−3° · frost likely
UV tomorrow: 3Moderate; Moderate 12–3 PM · peak 3
Air quality: 26Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.26 inHg1025 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

20°11° cooler than this time yesterday (49°9° then, 29°−2° now)

Good hours for

Fog until 9 AM
Above 50°10° today by noon
High 58°14° today at 4 PM
Below 50°10° tonight after 7 PM
Fog tomorrow night 3–4 AM

This morningUp to 47°8° by 11 AM · Partly cloudy
This afternoonUp to 58°14° by 4 PM · Mostly cloudy
TonightDown to 36°2° by 4 AM · Mostly cloudy
Tomorrow morningUp to 49°9° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 58°14° by 4 PM · Mostly cloudy
Tomorrow nightDown to 38°3° by 5 AM · rain chance 20% · 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 8a	Fog	33°1° (likely 31°−1° to 39°4°)	33°1°	0%	0 mph0 km/h, gusts 1 mph2 km/h	100%	55%	0
Sat 9a	Mostly sunny	37°3° (likely 36°2° to 41°5°)	37°3°	0%	1 mph2 km/h from SE, gusts 2 mph3 km/h	93%	42%	0
Sat 10a	Sunny	43°6° (likely 42°6° to 47°8°)	43°6°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	83%	30%	1
Sat 11a	Cloudy	47°8° (likely 47°8° to 50°10°)	47°8°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	74%	61%	1
Sat 12p	Partly sunny	51°11° (likely 50°10° to 53°12°)	51°11°	0%	2 mph3 km/h from SE, gusts 5 mph8 km/h	64%	66%	2
Sat 1p	Partly sunny	55°13° (likely 53°12° to 57°14°)	55°13°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	55%	58%	2
Sat 2p	Partly sunny	57°14° (likely 55°13° to 58°14°)	57°14°	0%	2 mph3 km/h from SE, gusts 8 mph13 km/h	51%	63%	2
Sat 3p	Cloudy	57°14° (likely 56°13° to 59°15°)	57°14°	0%	2 mph3 km/h from E, gusts 8 mph12 km/h	48%	81%	1
Sat 4p	Cloudy	58°14° (likely 56°13° to 58°14°)	58°14°	0%	3 mph5 km/h from E, gusts 8 mph13 km/h	48%	79%	1
Sat 5p	Cloudy	57°14° (likely 55°13° to 57°14°)	57°14°	0%	2 mph3 km/h from E, gusts 8 mph13 km/h	50%	74%	1
Sat 6p	Cloudy	54°12° (likely 51°11° to 54°12°)	54°12°	0%	2 mph3 km/h from E, gusts 7 mph11 km/h	60%	72%	0
Sat 7p	Cloudy	49°9° (likely 49°9° to 51°11°)	49°9°	0%	2 mph3 km/h from E, gusts 5 mph9 km/h	73%	60%	0
Sat 8p	Cloudy	43°6° (likely 43°6° to 49°9°)	43°6°	0%	2 mph3 km/h from E, gusts 5 mph8 km/h	78%	69%	0
Sat 9p	Cloudy	42°6° (likely 42°6° to 48°9°)	42°6°	0%	1 mph2 km/h from E, gusts 5 mph7 km/h	80%	78%	0
Sat 10p	Cloudy	40°4° (likely 40°4° to 47°8°)	40°4°	0%	1 mph2 km/h from E, gusts 4 mph6 km/h	84%	79%	0
Sat 11p	Cloudy	40°4° (likely 40°4° to 46°8°)	40°4°	0%	1 mph2 km/h from NE, gusts 2 mph4 km/h	84%	81%	0
Sun 12a	Cloudy	39°4° (likely 39°4° to 45°7°)	39°4°	0%	1 mph2 km/h from W, gusts 3 mph6 km/h	86%	81%	0
Sun 1a	Cloudy	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	84%	77%	0
Sun 2a	Cloudy	38°3° (likely 38°3° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	84%	80%	0
Sun 3a	Cloudy	37°3° (likely 37°3° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	85%	77%	0
Sun 4a	Cloudy	36°2° (likely 36°2° to 43°6°)	36°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	85%	73%	0
Sun 5a	Cloudy	36°2° (likely 36°2° to 42°6°)	36°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	82%	71%	0
Sun 6a	Cloudy	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 3 mph5 km/h	87%	70%	0
Sun 7a	Cloudy	34°1° (likely 34°1° to 41°5°)	34°1°	0%	0 mph0 km/h, gusts 2 mph4 km/h	86%	72%	0
Sun 8a	Cloudy	35°2° (likely 35°2° to 41°5°)	35°2°	0%	1 mph2 km/h from N, gusts 3 mph4 km/h	89%	75%	0
Sun 9a	Cloudy	40°4° (likely 40°4° to 45°7°)	40°4°	0%	1 mph2 km/h from N, gusts 3 mph5 km/h	77%	75%	0
Sun 10a	Cloudy	46°8° (likely 44°7° to 49°9°)	46°8°	0%	1 mph2 km/h from N, gusts 4 mph7 km/h	68%	76%	1
Sun 11a	Cloudy	49°9° (likely 47°8° to 54°12°)	49°9°	0%	2 mph3 km/h from NE, gusts 4 mph7 km/h	62%	74%	2
Sun 12p	Cloudy	52°11° (likely 51°11° to 56°13°)	52°11°	0%	2 mph3 km/h from NE, gusts 5 mph8 km/h	55%	78%	3
Sun 1p	Cloudy	56°13° (likely 53°12° to 58°14°)	56°13°	0%	2 mph3 km/h from NE, gusts 5 mph9 km/h	49%	81%	3
Sun 2p	Cloudy	57°14° (likely 55°13° to 61°16°)	57°14°	0%	2 mph3 km/h from NE, gusts 9 mph14 km/h	47%	82%	3
Sun 3p	Cloudy	57°14° (likely 55°13° to 62°17°)	57°14°	0%	2 mph3 km/h from NE, gusts 9 mph15 km/h	48%	83%	2
Sun 4p	Cloudy	58°14° (likely 55°13° to 61°16°)	58°14°	0%	2 mph3 km/h from NE, gusts 10 mph17 km/h	49%	84%	1
Sun 5p	Cloudy	56°13° (likely 54°12° to 59°15°)	56°13°	5%	2 mph3 km/h from NE, gusts 11 mph17 km/h	52%	84%	1
Sun 6p	Cloudy	54°12° (likely 51°11° to 56°13°)	54°12°	5%	2 mph3 km/h from NE, gusts 6 mph10 km/h	60%	83%	0
Sun 7p	Cloudy	49°9° (likely 49°9° to 53°12°)	49°9°	5%	2 mph3 km/h from NE, gusts 6 mph9 km/h	69%	80%	0
Sun 8p	Clear	45°7° (likely 45°7° to 51°11°)	45°7°	5%	1 mph2 km/h from NW, gusts 7 mph11 km/h	76%	44%	0
Sun 9p	Clear	43°6° (likely 43°6° to 50°10°)	43°6°	5%	1 mph2 km/h from NW, gusts 6 mph10 km/h	80%	41%	0
Sun 10p	Cloudy	42°6° (likely 42°6° to 50°10°)	42°6°	5%	1 mph2 km/h from NW, gusts 7 mph12 km/h	82%	73%	0
Sun 11p	Cloudy	42°6° (likely 42°6° to 49°9°)	42°6°	10%	2 mph3 km/h from NW, gusts 7 mph12 km/h	83%	70%	0
Mon 12a	Partly cloudy	41°5° (likely 41°5° to 48°9°)	41°5°	10%	2 mph3 km/h from NW, gusts 6 mph9 km/h	85%	44%	0
Mon 1a	Clear	41°5° (likely 40°4° to 47°8°)	41°5°	10%	2 mph3 km/h from NW, gusts 5 mph9 km/h	87%	25%	0
Mon 2a	Clear	40°4° (likely 38°3° to 46°8°)	40°4°	10%	1 mph2 km/h from NW, gusts 6 mph10 km/h	88%	31%	0
Mon 3a	Fog	39°4° (likely 37°3° to 47°8°)	39°4°	10%	1 mph2 km/h from NW, gusts 4 mph7 km/h	88%	48%	0
Mon 4a	Cloudy	39°4° (likely 36°2° to 48°9°)	39°4°	10%	1 mph2 km/h from NW, gusts 7 mph11 km/h	87%	76%	0
Mon 5a	Conditions unavailable	38°3° (likely 35°2° to 48°9°)	38°3°	20%	1 mph2 km/h from NW, gusts 3 mph5 km/h	87%	78%	0
Mon 6a	Conditions unavailable	37°3° (likely 28°−2° to 48°9°)	37°3°	20%	1 mph2 km/h from NW, gusts 4 mph7 km/h	90%	75%	0
Mon 7a	Conditions unavailable	37°3° (likely 28°−2° to 49°9°)	37°3°	20%	1 mph2 km/h from NW, gusts 5 mph7 km/h	94%	79%	0

Days ahead

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

Today, Oct 24. Cloudy. High 59°15°, low 34°1°. Typical 60°16° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 33°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 36°2°
  Dry
Official NWS forecast
Today: Areas of frost and patchy fog before 11am. Mostly sunny. High near 59, with temperatures falling to around 57 in the afternoon. East wind 0 to 3 mph.
Tonight: Patchy fog after 5am. Mostly cloudy. Low around 34, with temperatures rising to around 36 overnight. Northeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–59°15°
Low, likely
30°−1°–39°4°
Typical high / low
60°16° / 38°3°
Wind
7 mph12 km/h, gusts 13 mph20 km/h
UV peak
3
Tomorrow, Oct 25. Cloudy. High 59°15°, low 36°2°. Typical 60°16° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 45°7°
  Dry
4. Overnight
  midnight–6 AM
  Fog, 38°3°
  Dry
Official NWS forecast
Day: Patchy fog before 8am, then patchy frost and patchy fog between 8am and 11am. Mostly cloudy. High near 59, with temperatures falling to around 56 in the afternoon. Northeast wind around 2 mph.
Night: Patchy fog between 2am and 5am, then patchy frost and patchy fog and a slight chance of rain showers. Mostly cloudy, with a low around 36. Northwest wind around 2 mph. Chance of precipitation is 20%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–62°17°
Low, likely
36°2°–41°5°
Typical high / low
60°16° / 38°3°
Wind
8 mph14 km/h, gusts 15 mph23 km/h
UV peak
3
Monday, Oct 26. Mostly cloudy. High 60°16°, low 35°2°. Typical 59°15° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 42°6°
  20% chance
2. Afternoon
  noon–6 PM
  Partly sunny, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy frost and patchy fog and a slight chance of rain showers before 11am. Partly sunny, with a high near 60. West wind around 3 mph. Chance of precipitation is 20%.
Night: Partly cloudy, with a low around 35.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
56°13°–61°16°
Low, likely
34°1°–45°7°
Typical high / low
59°15° / 38°3°
Wind
8 mph12 km/h, gusts 14 mph23 km/h
UV peak
3
Tuesday, Oct 27. Partly sunny. High 61°16°, low 35°2°. Typical 59°15° / 37°3°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Partly sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 61.
Night: A slight chance of rain showers after 5am. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.
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 61°16°).
High, likely
58°14°–62°17°
Low, likely
35°2°–44°7°
Typical high / low
59°15° / 37°3°
Wind
18 mph29 km/h, gusts 32 mph51 km/h
UV peak
3
Wednesday, Oct 28. Showers. High 58°14°, low 33°1°. Typical 58°14° / 37°3°. Rain 0.01 in0.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers. Partly sunny, with a high near 58.
Night: A chance of rain showers. Mostly cloudy, with a low around 33.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–60°16°
Low, likely
33°1°–42°6°
Typical high / low
58°14° / 37°3°
Wind
16 mph26 km/h, gusts 22 mph36 km/h
UV peak
3
Thursday, Oct 29. Cloudy. High 55°13°, low 30°−1°. Typical 58°14° / 36°2°. Rain 0.01 in0.3 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain showers before 11am. Partly sunny, with a high near 55.
Night: Partly cloudy, with a low around 30.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–56°13°
Low, likely
30°−1°–40°4°
Typical high / low
58°14° / 36°2°
Wind
14 mph22 km/h, gusts 26 mph42 km/h
UV peak
3
Friday, Oct 30. Partly sunny. High 54°12°, low 29°−2°. Typical 57°14° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 44°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 54.
Night: Partly cloudy, with a low around 29.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
49°9°–54°12°
Low, likely
29°−2°–41°5°
Typical high / low
57°14° / 36°2°
Wind
6 mph9 km/h, gusts 13 mph20 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 49°9°, low 35°2°. Typical 57°14° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 35°2°
  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
44°7°–54°12°
Low, likely
30°−1°–40°4°
Typical high / low
57°14° / 36°2°
Wind
6 mph10 km/h, gusts 11 mph18 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 52°11°, low 35°2°. Typical 56°13° / 36°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  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
46°8°–58°14°
Low, likely
26°−3°–42°6°
Typical high / low
56°13° / 36°2°
Wind
8 mph13 km/h
UV peak
2
Monday, Nov 2. Cloudy. High 52°11°, low 38°3°. Typical 56°13° / 35°2°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 46°8°
  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
46°8°–59°15°
Low, likely
33°1°–41°5°
Typical high / low
56°13° / 35°2°
Wind
7 mph11 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 59°, low 34°.
Tomorrow
Dry, high 59°, low 36°.
Monday
Dry, high 60°, low 35°.
Rest of week
Mostly dry, highs 49–61°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (PDT) (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

Yakima River at Kiona

14 mi

Below flood stage

Level: 4.4 ft
Flow: 2,030 cfs

Forecast peak 4.5 ft Thu 11 AM

Reading from Sat 6:30 AM · NWS gauge page

For your home

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

Heating this week

About 67% less heating than a typical week.

This week 39Typical 120

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 30
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 23 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 27°F). Indoor air will run dry too — a humidifier keeping indoor relative humidity in the 30–50% range is more comfortable and cuts static shocks, without going so high it fogs cold windows.

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Prosser · official normals 1991–2020 · records 1925–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 28 min; Losing 3 min 3 s a day; shortest Dec 21, 1 h 51 min less
Golden hour: 5:14–6:15 PM; Morning 7:10–8:11 AM
Blue hour: 6:15–6:27 PM; Morning 6:58–7:10 AM; first light 6:58 AM

Stars tonight? Poor

Clouds most of the night (about 74% cover).

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:45 AM · rises 4:58 PM
Full moon: Oct 25
New moon: Nov 8

Looking west from Prosser. The highest point on the skyline is about 12,200 ft, 83 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

1 active weather alert

Freeze Warning