Freeze Warning
Ends in 6 h 47 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 2:55 AM PDT at KYKM

Ahtanum, WA weather

Freeze Warning. 32°0° and clear now.

Mostly agree

Now 32°0°

Clear · Feels like 25°−4°

Feels like: 25°−4°; Wind chill from 8 mph13 km/h wind · air 32°0°
Wind: 8 mph13 km/h; From the west-southwest. Up to 8 mph13 km/h through 3 PM
Dew point: 25°−4°; Dry, static shocks likely
UV tomorrow: 3Moderate; Moderate 1–2 PM · peak 3
Air quality: 39Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.29 inHg1026 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Below freezing today 6–9 AM (low 31°−1°)
Low 31°−1° today at 7 AM
Above 40°4° today by 10 AM
High 56°13° today at 4 PM

TonightNear 35°2° · Clear
This morningUp to 46°8° by 11 AM · freezing, low 31°−1° · Mostly cloudy
This afternoonUp to 56°13° by 4 PM · Mostly cloudy
TonightDown to 35°2° by 5 AM · Mostly cloudy
Tomorrow morningUp to 47°8° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 55°13° by 4 PM · rain chance 30% · Mostly cloudy
Tomorrow nightDown to 41°5° by 1 AM · rain chance 40% · Mostly 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 3a	Clear	36°2° (likely 33°1° to 38°3°)	36°2°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	68%	9%	0
Sat 4a	Clear	34°1° (likely 33°1° to 37°3°)	34°1°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	69%	18%	0
Sat 5a	Partly cloudy	33°1° (likely 33°1° to 37°3°)	33°1°	0%	0 mph0 km/h, gusts 3 mph5 km/h	71%	42%	0
Sat 6a	Partly cloudy	32°0° (likely 32°0° to 37°3°)	32°0°	0%	0 mph0 km/h, gusts 3 mph6 km/h	73%	49%	0
Sat 7a	Cloudy	31°−1° (likely 31°−1° to 37°3°)	31°−1°	0%	0 mph0 km/h, gusts 3 mph4 km/h	73%	71%	0
Sat 8a	Cloudy	32°0° (likely 31°−1° to 37°3°)	32°0°	0%	0 mph0 km/h, gusts 2 mph3 km/h	73%	75%	0
Sat 9a	Cloudy	35°2° (likely 35°2° to 39°4°)	35°2°	0%	1 mph2 km/h from NW, gusts 1 mph2 km/h	68%	77%	0
Sat 10a	Cloudy	42°6° (likely 41°5° to 44°7°)	42°6°	0%	1 mph2 km/h from NE, gusts 2 mph3 km/h	58%	79%	1
Sat 11a	Cloudy	46°8° (likely 46°8° to 48°9°)	46°8°	0%	2 mph3 km/h from E, gusts 3 mph5 km/h	51%	77%	1
Sat 12p	Cloudy	49°9° (likely 49°9° to 52°11°)	49°9°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	48%	66%	2
Sat 1p	Cloudy	53°12° (likely 51°11° to 54°12°)	53°12°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	45%	67%	2
Sat 2p	Cloudy	54°12° (likely 53°12° to 57°14°)	54°12°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	41%	63%	2
Sat 3p	Cloudy	55°13° (likely 54°12° to 58°14°)	55°13°	0%	3 mph5 km/h from SE, gusts 6 mph10 km/h	42%	63%	1
Sat 4p	Cloudy	56°13° (likely 54°12° to 58°14°)	56°13°	0%	3 mph5 km/h from SE, gusts 6 mph9 km/h	42%	70%	1
Sat 5p	Cloudy	54°12° (likely 53°12° to 56°13°)	54°12°	0%	2 mph3 km/h from SE, gusts 4 mph7 km/h	46%	73%	1
Sat 6p	Cloudy	51°11° (likely 50°10° to 52°11°)	51°11°	0%	1 mph2 km/h from S, gusts 3 mph5 km/h	56%	75%	0
Sat 7p	Cloudy	48°9° (likely 47°8° to 49°9°)	48°9°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	62%	80%	0
Sat 8p	Cloudy	44°7° (likely 44°7° to 47°8°)	44°7°	0%	2 mph3 km/h from NW, gusts 4 mph7 km/h	65%	79%	0
Sat 9p	Cloudy	43°6° (likely 41°5° to 46°8°)	43°6°	0%	1 mph2 km/h from NW, gusts 4 mph6 km/h	67%	78%	0
Sat 10p	Cloudy	41°5° (likely 40°4° to 45°7°)	41°5°	0%	1 mph2 km/h from NW, gusts 3 mph6 km/h	67%	75%	0
Sat 11p	Cloudy	40°4° (likely 37°3° to 43°6°)	40°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	70%	74%	0
Sun 12a	Cloudy	39°4° (likely 37°3° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 4 mph6 km/h	70%	73%	0
Sun 1a	Cloudy	39°4° (likely 37°3° to 42°6°)	39°4°	0%	0 mph0 km/h, gusts 4 mph7 km/h	69%	70%	0
Sun 2a	Cloudy	38°3° (likely 37°3° to 42°6°)	38°3°	0%	0 mph0 km/h, gusts 4 mph7 km/h	69%	73%	0
Sun 3a	Cloudy	38°3° (likely 37°3° to 42°6°)	38°3°	0%	0 mph0 km/h, gusts 4 mph7 km/h	70%	74%	0
Sun 4a	Cloudy	37°3° (likely 36°2° to 41°5°)	37°3°	0%	0 mph0 km/h, gusts 4 mph7 km/h	73%	77%	0
Sun 5a	Cloudy	35°2° (likely 35°2° to 41°5°)	35°2°	5%	0 mph0 km/h, gusts 4 mph7 km/h	75%	78%	0
Sun 6a	Cloudy	34°1° (likely 34°1° to 40°4°)	34°1°	5%	0 mph0 km/h, gusts 4 mph7 km/h	79%	78%	0
Sun 7a	Cloudy	33°1° (likely 33°1° to 40°4°)	33°1°	5%	0 mph0 km/h, gusts 4 mph7 km/h	79%	77%	0
Sun 8a	Cloudy	34°1° (likely 34°1° to 39°4°)	34°1°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	79%	77%	0
Sun 9a	Cloudy	38°3° (likely 38°3° to 42°6°)	38°3°	0%	2 mph3 km/h from N, gusts 4 mph7 km/h	76%	78%	0
Sun 10a	Cloudy	44°7° (likely 44°7° to 49°9°)	44°7°	0%	2 mph3 km/h from N, gusts 4 mph7 km/h	67%	79%	1
Sun 11a	Cloudy	47°8° (likely 47°8° to 54°12°)	47°8°	0%	2 mph3 km/h from E, gusts 3 mph4 km/h	59%	79%	2
Sun 12p	Cloudy	50°10° (likely 50°10° to 57°14°)	50°10°	0%	2 mph3 km/h from E, gusts 3 mph5 km/h	55%	82%	2
Sun 1p	Cloudy	53°12° (likely 53°12° to 59°15°)	53°12°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	52%	81%	3
Sun 2p	Cloudy	54°12° (likely 54°12° to 61°16°)	54°12°	0%	2 mph3 km/h from NE, gusts 4 mph7 km/h	48%	81%	2
Sun 3p	Cloudy	54°12° (likely 54°12° to 61°16°)	54°12°	0%	2 mph3 km/h from NE, gusts 5 mph8 km/h	49%	82%	2
Sun 4p	Cloudy	55°13° (likely 55°13° to 60°16°)	55°13°	0%	2 mph3 km/h from NE, gusts 5 mph7 km/h	50%	83%	1
Sun 5p	Cloudy	54°12° (likely 53°12° to 58°14°)	54°12°	30%	2 mph3 km/h from N, gusts 4 mph6 km/h	54%	83%	1
Sun 6p	Cloudy	51°11° (likely 51°11° to 54°12°)	51°11°	30%	2 mph3 km/h from N, gusts 4 mph7 km/h	62%	84%	0
Sun 7p	Cloudy	47°8° (likely 47°8° to 52°11°)	47°8°	30%	2 mph3 km/h from N, gusts 5 mph8 km/h	67%	82%	0
Sun 8p	Cloudy	45°7° (likely 45°7° to 50°10°)	43°6°	30%	3 mph5 km/h from NW, gusts 6 mph10 km/h	70%	87%	0
Sun 9p	Clear	43°6° (likely 43°6° to 48°9°)	41°5°	30%	3 mph5 km/h from NW, gusts 7 mph11 km/h	72%	54%	0
Sun 10p	Showers	42°6° (likely 42°6° to 48°9°)	40°4°	30%	3 mph5 km/h from NW, gusts 7 mph11 km/h	73%	63%	0
Sun 11p	Showers	42°6° (likely 42°6° to 48°9°)	42°6°	40%	2 mph3 km/h from NW, gusts 7 mph11 km/h	74%	73%	0
Mon 12a	Cloudy	42°6° (likely 42°6° to 52°11°)	42°6°	40%	2 mph3 km/h from NW, gusts 6 mph10 km/h	74%	97%	0
Mon 1a	Cloudy	41°5° (likely 41°5° to 52°11°)	41°5°	40%	2 mph3 km/h from NW, gusts 6 mph9 km/h	74%	97%	0
Mon 2a	Cloudy	41°5° (likely 41°5° to 52°11°)	41°5°	40%	1 mph2 km/h from NW, gusts 5 mph9 km/h	75%	97%	0

Days ahead

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

Today, Oct 24. Cloudy. High 56°13°, low 30°−1°. Typical 60°16° / 33°1°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 35°2°
  Dry
Official NWS forecast
Today: Widespread frost before 11am. Partly sunny. High near 56, with temperatures falling to around 54 in the afternoon. East wind 0 to 3 mph.
Tonight: Widespread frost. Partly cloudy. Low around 30, with temperatures rising to around 33 overnight. Northwest wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
54°12°–58°14°
Low, likely
30°−1°–37°3°
Typical high / low
60°16° / 33°1°
Wind
5 mph8 km/h
UV peak
3
Tomorrow, Oct 25. Cloudy. High 56°13°, low 35°2°. Typical 59°15° / 32°0°. Rain 0.01 in0.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 55°13°
  30% chance
3. Evening
  6 PM–midnight
  Showers, 45°7°
  40% chance
4. Overnight
  midnight–6 AM
  Cloudy, 41°5°
  40% chance · 0.02 in0.4 mm
Official NWS forecast
Day: Widespread frost between 8am and 11am, then a chance of rain showers. Cloudy, with a high near 56. North wind around 2 mph. Chance of precipitation is 30%.
Night: A chance of rain showers. Mostly cloudy, with a low around 35. Northwest wind 0 to 3 mph. Chance of precipitation is 40%.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–61°16°
Low, likely
34°1°–39°4°
Typical high / low
59°15° / 32°0°
Wind
7 mph11 km/h
UV peak
3
Monday, Oct 26. Showers. High 57°14°, low 33°1°. Typical 59°15° / 32°0°. Rain 0.09 in2.3 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  20% chance · 0.02 in0.5 mm
2. Afternoon
  noon–6 PM
  Partly sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers before 5pm. Partly sunny, with a high near 57. Chance of precipitation is 30%.
Night: Partly cloudy, with a low around 33.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
52°11°–60°16°
Low, likely
33°1°–48°9°
Typical high / low
59°15° / 32°0°
Wind
5 mph9 km/h
UV peak
3
Tuesday, Oct 27. Partly sunny. High 59°15°, low 33°1°. Typical 58°14° / 32°0°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 59.
Night: A slight chance of rain showers after 5am. Partly 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°–44°7°
Typical high / low
58°14° / 32°0°
Wind
8 mph14 km/h, gusts 18 mph28 km/h
UV peak
3
Wednesday, Oct 28. Showers. High 55°13°, low 31°−1°. Typical 58°14° / 32°0°. Rain 0.02 in0.5 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 32°0°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain showers. Partly sunny, with a high near 55.
Night: A chance of rain showers. Mostly cloudy, with a low around 31.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–56°13°
Low, likely
31°−1°–40°4°
Typical high / low
58°14° / 32°0°
Wind
12 mph20 km/h, gusts 20 mph32 km/h
UV peak
3
Thursday, Oct 29. Showers. High 52°11°, low 29°−2°. Typical 57°14° / 31°−1°. Rain 0.04 in1 mm, 20% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 31°0°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 50°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  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 52.
Night: A slight chance of rain showers before 5am. Partly cloudy, with a low around 29.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
48°9°–53°12°
Low, likely
26°−3°–39°4°
Typical high / low
57°14° / 31°−1°
Wind
11 mph18 km/h, gusts 23 mph37 km/h
UV peak
2
Friday, Oct 30. Partly sunny. High 52°11°, low 35°2°. Typical 57°14° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 49°9°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 52.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
46°8°–52°11°
Low, likely
31°−1°–37°3°
Typical high / low
57°14° / 31°−1°
Wind
5 mph8 km/h, gusts 11 mph18 km/h
UV peak
2
Saturday, Oct 31. Cloudy. High 49°9°, low 32°0°. Typical 56°13° / 31°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 40°5°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 31°−1°
  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°–54°12°
Low, likely
21°−6°–41°5°
Typical high / low
56°13° / 31°−1°
Wind
6 mph9 km/h, gusts 11 mph18 km/h
UV peak
3
Sunday, Nov 1. Sunny. High 49°9°, low 31°−1°. Typical 56°13° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 33°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 42°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 33°0°
  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
45°7°–53°12°
Low, likely
23°−5°–38°3°
Typical high / low
56°13° / 30°−1°
Wind
5 mph8 km/h, gusts 11 mph18 km/h
UV peak
3
Monday, Nov 2. Mostly sunny. High 49°9°, low 34°1°. Typical 55°13° / 30°−1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 49°10°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  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°–53°12°
Low, likely
28°−2°–38°3°
Typical high / low
55°13° / 30°−1°
Wind
5 mph8 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 56°, low 30°.
Tomorrow
Dry, high 56°, low 35°.
Monday
Dry, high 57°, low 33°.
Rest of week
Mostly dry, highs 49–59°.

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 near Parker

9.2 mi

Below flood stage

Level: 2.1 ft
Flow: 1,260 cfs

Forecast peak 2.1 ft Thu 11 AM

Reading from Sat 12:30 AM · NWS gauge page

Naches River near Naches

15 mi

Below flood stage

Level: 12.8 ft
Flow: 284 cfs

Forecast peak 12.8 ft Sat 5 AM

Reading from Sat 12:45 AM · NWS gauge page

Yakima River at Umtanum

22 mi

Below flood stage

Level: 30.7 ft
Flow: 665 cfs

Forecast peak 30.7 ft Thu 5 AM

Reading from Sat 1:15 AM · NWS gauge page

Ahtanum Creek at Union Gap

6.9 mi

Level: 2.8 ft
Flow: 14 cfs

Reading from Sat 1:30 AM · NWS gauge page

For your home

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

Heating this week

About 70% less heating than a typical week.

This week 42Typical 140

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 32
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at.

Comfort

Dry air outside (dew point 25°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?

Yakima Airport · official normals 1991–2020 · records 1946–2026

Oct 24, today vs a typical year

Today’s expected high is 4°2° colder than typical.

Last 7 days vs normal

On average 1°0° warmer than normal (daily mean temperature).

±0°SunOct 18
±0°MonOct 19
+4°+2°TueOct 20
+1°WedOct 21
−1°ThuOct 22
—FriOct 23
—SatOct 24

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

Sun & moon

Sun

Daylight: 10 h 27 min; Losing 3 min 8 s a day; shortest Dec 21, 1 h 53 min less
Golden hour: 5:17–6:18 PM; Morning 7:13–8:15 AM
Blue hour: 6:18–6:30 PM; Morning 7:01–7:13 AM; first light 7:01 AM

Stars tonight? Fair

Mostly clear 3:13–5 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

96% lit · growing

Today: sets 5:49 AM · rises 5:01 PM
Full moon: Oct 25
New moon: Nov 8

Looking west from Ahtanum. The highest point on the skyline is about 7,000 ft, 29 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

Ahtanum, WA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Yakima River near Parker

Naches River near Naches

Yakima River at Umtanum

Ahtanum Creek at Union Gap

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon