Freeze Warning
Starts in 1 h 12 min
When
From 1 AM to 9 AM PDT Saturday.
Where
Trinity County, Northern Mendocino Interior, and Northern Lake.
Issued for this forecast zone · National Weather Service Eureka CA
What, impacts and precautionsHide details
What
Sub-freezing temperatures as low as 29 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: Southern Trinity; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Northern Lake; Northwestern and Central Trinity; Northeastern Trinity
See it on weather.gov (opens in a new tab)

Model estimate for 11:00 PM PDT (no recent station report)

Junction City, CA weather

Freeze Warning. 48°9° and clear now.

Mostly agree

Now 48°9°

Clear · Feels like 44°7°

Wind: 9 mph14 km/h; From the south-southeast. 711–9 mph14 km/h through 11 AM
Dew point: 21°−6°; Dry, static shocks likely
UV tomorrow: 4Moderate; Moderate 11 AM–5 PM · peak 4
Air quality: 61Moderate; Main pollutant: PM2.5 (fine particles)

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Low 37°3° tomorrow at 7 AM
Above 50°10° tomorrow by noon
High 69°21° tomorrow at 4 PM

TonightDown to 39°4° by 5 AM · Clear
Tomorrow morningUp to 49°9° by 11 AM · Clear
Tomorrow afternoonUp to 69°21° by 4 PM · Partly cloudy
Tomorrow nightDown to 42°6° by 5 AM · Partly cloudy
Sunday morningUp to 49°9° by 11 AM · Mostly cloudy
Sunday afternoonUp to 65°18° by 3 PM · Mostly cloudy
Sunday nightDown to 52°11° by 10 PM · 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
Fri 11p	Clear	48°9° (likely 41°5° to 51°11°)	44°7°	0%	9 mph14 km/h from SSE, gusts 10 mph17 km/h	34%	0%	0
Sat 12a	Clear	47°8° (likely 40°4° to 52°11°)	43°6°	0%	9 mph14 km/h from SSE, gusts 11 mph17 km/h	36%	0%	0
Sat 1a	Clear	46°8° (likely 39°4° to 52°11°)	41°5°	0%	9 mph14 km/h from SSE, gusts 9 mph14 km/h	36%	0%	0
Sat 2a	Clear	44°7° (likely 38°3° to 51°11°)	39°4°	0%	9 mph14 km/h from S, gusts 6 mph10 km/h	38%	0%	0
Sat 3a	Clear	43°6° (likely 37°3° to 51°11°)	38°3°	0%	9 mph14 km/h from S, gusts 6 mph10 km/h	39%	0%	0
Sat 4a	Clear	41°5° (likely 36°2° to 51°11°)	35°2°	0%	9 mph14 km/h from S, gusts 6 mph10 km/h	39%	0%	0
Sat 5a	Clear	39°4° (likely 35°2° to 52°11°)	34°1°	0%	8 mph13 km/h from SSE, gusts 6 mph9 km/h	42%	0%	0
Sat 6a	Clear	39°4° (likely 35°2° to 51°11°)	33°1°	0%	8 mph13 km/h from SSE, gusts 5 mph9 km/h	43%	0%	0
Sat 7a	Clear	37°3° (likely 34°1° to 51°11°)	31°−1°	0%	8 mph13 km/h from SSE, gusts 4 mph7 km/h	43%	1%	0
Sat 8a	Sunny	38°3° (likely 35°2° to 51°11°)	32°0°	0%	7 mph11 km/h from SSE, gusts 5 mph8 km/h	44%	1%	0
Sat 9a	Sunny	40°4° (likely 39°4° to 52°11°)	35°2°	0%	7 mph11 km/h from SSE, gusts 5 mph8 km/h	43%	2%	1
Sat 10a	Sunny	45°7° (likely 45°7° to 58°14°)	41°5°	0%	7 mph11 km/h from SSE, gusts 8 mph13 km/h	41%	2%	2
Sat 11a	Sunny	49°9° (likely 49°9° to 59°15°)	45°7°	0%	9 mph14 km/h from SE, gusts 11 mph18 km/h	37%	36%	3
Sat 12p	Sunny	55°13° (likely 55°13° to 62°17°)	55°13°	0%	9 mph14 km/h from SE, gusts 11 mph18 km/h	32%	40%	4
Sat 1p	Sunny	61°16° (likely 60°16° to 65°18°)	61°16°	0%	9 mph14 km/h from SE, gusts 10 mph15 km/h	26%	35%	4
Sat 2p	Sunny	66°19° (likely 63°17° to 67°19°)	66°19°	0%	8 mph13 km/h from SE, gusts 7 mph11 km/h	22%	32%	4
Sat 3p	Mostly sunny	68°20° (likely 64°18° to 68°20°)	68°20°	0%	8 mph13 km/h from SE, gusts 5 mph9 km/h	21%	18%	4
Sat 4p	Sunny	69°21° (likely 65°18° to 69°21°)	69°21°	0%	8 mph13 km/h from SE, gusts 5 mph8 km/h	21%	24%	3
Sat 5p	Mostly sunny	68°20° (likely 63°17° to 68°20°)	68°20°	0%	1 mph2 km/h from WNW, gusts 4 mph7 km/h	21%	18%	2
Sat 6p	Clear	65°18° (likely 58°14° to 65°18°)	65°18°	0%	1 mph2 km/h from WNW, gusts 4 mph6 km/h	25%	6%	0
Sat 7p	Clear	63°17° (likely 53°12° to 63°17°)	63°17°	0%	1 mph2 km/h from WNW, gusts 8 mph13 km/h	28%	9%	0
Sat 8p	Mostly clear	58°14° (likely 48°9° to 60°16°)	58°14°	0%	1 mph2 km/h from NNW, gusts 8 mph12 km/h	32%	9%	0
Sat 9p	Clear	57°14° (likely 46°8° to 60°16°)	57°14°	0%	1 mph2 km/h from NNW, gusts 6 mph10 km/h	32%	31%	0
Sat 10p	Mostly clear	55°13° (likely 44°7° to 59°15°)	55°13°	0%	1 mph2 km/h from NNW, gusts 5 mph9 km/h	33%	41%	0
Sat 11p	Mostly clear	53°12° (likely 42°6° to 58°14°)	53°12°	0%	2 mph3 km/h from ENE, gusts 3 mph6 km/h	35%	52%	0
Sun 12a	Mostly clear	51°11° (likely 41°5° to 56°13°)	51°11°	0%	2 mph3 km/h from ENE, gusts 2 mph3 km/h	39%	66%	0
Sun 1a	Cloudy	50°10° (likely 41°5° to 55°13°)	50°10°	0%	2 mph3 km/h from ENE, gusts 2 mph3 km/h	41%	74%	0
Sun 2a	Cloudy	47°8° (likely 40°4° to 55°13°)	47°8°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	44%	77%	0
Sun 3a	Cloudy	45°7° (likely 39°4° to 54°12°)	45°7°	0%	2 mph3 km/h from E, gusts 6 mph10 km/h	48%	78%	0
Sun 4a	Cloudy	44°7° (likely 39°4° to 54°12°)	44°7°	0%	2 mph3 km/h from E, gusts 7 mph12 km/h	49%	78%	0
Sun 5a	Partly cloudy	42°6° (likely 38°3° to 54°12°)	42°6°	0%	2 mph3 km/h from E, gusts 8 mph12 km/h	55%	61%	0
Sun 6a	Partly cloudy	41°5° (likely 37°3° to 54°12°)	41°5°	0%	2 mph3 km/h from E, gusts 7 mph12 km/h	59%	74%	0
Sun 7a	Partly cloudy	40°4° (likely 37°3° to 53°12°)	40°4°	0%	2 mph3 km/h from E, gusts 8 mph12 km/h	62%	78%	0
Sun 8a	Partly sunny	40°4° (likely 37°3° to 52°11°)	38°3°	0%	3 mph5 km/h from ENE, gusts 8 mph12 km/h	63%	75%	0
Sun 9a	Partly sunny	42°6° (likely 41°5° to 56°13°)	40°4°	0%	3 mph5 km/h from ENE, gusts 8 mph12 km/h	61%	73%	1
Sun 10a	Partly sunny	45°7° (likely 45°7° to 56°13°)	44°7°	0%	3 mph5 km/h from ENE, gusts 10 mph15 km/h	57%	71%	1
Sun 11a	Cloudy	49°9° (likely 49°9° to 58°14°)	48°9°	0%	3 mph5 km/h from ESE, gusts 10 mph17 km/h	51%	72%	3
Sun 12p	Mostly sunny	54°12° (likely 54°12° to 61°16°)	54°12°	0%	3 mph5 km/h from ESE, gusts 11 mph18 km/h	44%	79%	3
Sun 1p	Cloudy	59°15° (likely 59°15° to 63°17°)	59°15°	0%	3 mph5 km/h from ESE, gusts 11 mph18 km/h	37%	83%	4
Sun 2p	Cloudy	63°17° (likely 61°16° to 65°18°)	63°17°	0%	3 mph5 km/h from SSE, gusts 12 mph19 km/h	31%	86%	3
Sun 3p	Mostly sunny	65°18° (likely 61°16° to 66°19°)	65°18°	0%	3 mph5 km/h from SSE, gusts 11 mph17 km/h	27%	70%	3
Sun 4p	Cloudy	65°18° (likely 62°17° to 66°19°)	65°18°	0%	3 mph5 km/h from SSE, gusts 9 mph15 km/h	26%	88%	2
Sun 5p	Partly sunny	64°18° (likely 60°16° to 66°19°)	64°18°	5%	5 mph8 km/h from S, gusts 9 mph15 km/h	27%	60%	1
Sun 6p	Partly cloudy	62°17° (likely 55°13° to 62°17°)	62°17°	5%	5 mph8 km/h from S, gusts 7 mph11 km/h	31%	65%	0
Sun 7p	Partly cloudy	59°15° (likely 49°9° to 59°15°)	59°15°	5%	5 mph8 km/h from S, gusts 6 mph10 km/h	36%	59%	0
Sun 8p	Clear	56°13° (likely 47°8° to 56°13°)	56°13°	5%	2 mph3 km/h from SE, gusts 6 mph10 km/h	41%	30%	0
Sun 9p	Clear	54°12° (likely 44°7° to 54°12°)	54°12°	5%	2 mph3 km/h from SE, gusts 7 mph11 km/h	44%	27%	0
Sun 10p	Clear	52°11° (likely 41°5° to 52°11°)	52°11°	5%	2 mph3 km/h from SE, gusts 7 mph11 km/h	47%	0%	0

Days ahead

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

Today, Oct 23. Fog. High 61°16°, low 36°2°. Typical 72°22° / 37°3°. Dry. Mostly agree.
1. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Official NWS forecast
Tonight: Clear, with a low around 36. South southeast wind around 9 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
58°14°–64°18°
Low, likely
36°2°–45°7°
Typical high / low
72°22° / 37°3°
Wind
13 mph22 km/h
UV peak
4
Tomorrow, Oct 24. Sunny. High 69°21°, low 40°4°. Typical 71°22° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 42°6°
  Dry
Official NWS forecast
Day: Sunny, with a high near 69. South southeast wind 1 to 9 mph.
Night: Mostly clear, with a low around 40. Northeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
34°1°–51°11°
Typical high / low
71°22° / 37°3°
Wind
12 mph20 km/h
UV peak
4
Sunday, Oct 25. Partly sunny. High 66°19°, low 38°3°. Typical 70°21° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Official NWS forecast
Day: Mostly sunny, with a high near 66. Southeast wind around 5 mph.
Night: Partly cloudy, with a low around 38. South wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–66°19°
Low, likely
36°2°–40°4°
Typical high / low
70°21° / 37°3°
Wind
10 mph15 km/h, gusts 17 mph28 km/h
UV peak
4
Monday, Oct 26. Rain. High 57°14°, low 35°2°. Typical 70°21° / 37°3°. Rain 0.02 in0.5 mm, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain between 11am and 5pm. Mostly sunny, with a high near 57. West southwest wind 2 to 8 mph, with gusts as high as 18 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Night: Partly cloudy, with a low around 35.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
52°11°–57°14°
Low, likely
35°2°–39°4°
Typical high / low
70°21° / 37°3°
Wind
8 mph13 km/h, gusts 26 mph42 km/h
UV peak
2
Tuesday, Oct 27. Partly sunny. High 60°16°, low 37°3°. Typical 69°21° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: Partly cloudy, with a low around 37.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
55°13°–61°16°
Low, likely
34°1°–38°3°
Typical high / low
69°21° / 37°3°
Wind
6 mph9 km/h, gusts 17 mph27 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 62°17°, low 38°3°. Typical 69°21° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 44°7°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 36°2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 62.
Night: Partly cloudy, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–62°17°
Low, likely
33°1°–38°3°
Typical high / low
69°21° / 37°3°
Wind
6 mph9 km/h, gusts 12 mph19 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 61°16°, low 38°3°. Typical 68°20° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 56°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 32°0°
  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 after 5am. Partly cloudy, with a low around 38.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–61°16°
Low, likely
29°−2°–38°3°
Typical high / low
68°20° / 37°3°
Wind
7 mph10 km/h, gusts 22 mph36 km/h
UV peak
4
Friday, Oct 30. Rain. High 60°16°, low 31°−1°. Typical 68°20° / 37°3°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 33°1°
  20% chance
2. Afternoon
  noon–6 PM
  Cloudy, 56°13°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 35°2°
  20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: A slight chance of rain. Mostly sunny, with a high near 60.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–60°16°
Low, likely
27°−3°–34°1°
Typical high / low
68°20° / 37°3°
Wind
5 mph8 km/h, gusts 15 mph24 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 56°13°, low 33°1°. Typical 67°19° / 37°3°. Rain 0.02 in0.5 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 56°13°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 45°7°
  20% chance
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  20% chance
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
51°11°–61°16°
Low, likely
30°−1°–37°3°
Typical high / low
67°19° / 37°3°
Wind
4 mph6 km/h, gusts 13 mph21 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 62°17°, low 35°2°. Typical 66°19° / 37°3°. Rain 0.01 in0.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  20% chance
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  20% chance
3. Evening
  6 PM–midnight
  Clear, 50°10°
  20% chance
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
59°15°–68°20°
Low, likely
32°0°–38°3°
Typical high / low
66°19° / 37°3°
Wind
4 mph6 km/h, gusts 10 mph16 km/h
UV peak
3

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 36°.
Tomorrow
Dry, high 69°, low 40°, warming up.
Sunday
Dry, high 66°, low 38°, cooling off.
Rest of week
Mostly dry, highs 56–62°.

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

Trinity River at Junction City

1.3 mi

Level: 1.6 ft
Flow: 370 cfs

Reading from Fri 10:45 PM · NWS gauge page

Trinity River near Helena 1SSE

2.6 mi

Level: 8.7 ft
Flow: 349 cfs

Reading from Fri 10:45 PM · NWS gauge page

Trinity River at Douglas City

7.1 mi

Level: 6.5 ft
Flow: 380 cfs

Reading from Fri 11 PM · NWS gauge page

Indian Creek (CA) near Douglas City

11 mi

Level: 1.1 ft
Flow: 7 cfs

Reading from Fri 10:30 PM · NWS gauge page

For your home

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

Heating this week

About 68% less heating than a typical week.

This week 26Typical 81

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 20
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 21°F).

Open the windows?

Sat, 1:00 PM–7:00 PM

Good stretch to open the windows (air quality forecast not available for part of this window).

Is this typical?

Trinity River Hatchery · official normals 1991–2020 · records 1974–2026

Oct 23, today vs a typical year

Today’s expected high is 11°6° colder than typical.

Last 7 days vs normal

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

Junction City weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 47 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 32 min less
Golden hour: 5:42–6:37 PM; Morning 7:15–8:10 AM
Blue hour: 6:37–6:48 PM; Morning 7:04–7:15 AM; first light 7:04 AM

Stars tonight? Good

Clear 11:48 PM–7:05 AM; moon 96% lit, sets 5:54 AM.

Moon

Waxing gibbous

95% lit · growing

Today: sets 4:44 AM · rises 4:55 PM
Full moon: Oct 25
New moon: Nov 8

Looking northeast from Junction City. The highest point on the skyline is about 19,400 ft, 44 mi away.Skyline from USGS elevation data, heights drawn up to 3× taller. Sky, sun and moon as they are now.

1 active weather alert

Freeze Warning