Freeze Warning
Starts in 14 h 9 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 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: 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)

Observed 9:55 AM PDT at KO86

Lewiston, CA weather

Freeze Warning. 48°9° and sunny now.

Mostly agree

Now 48°9°

Sunny

Wind: Calm; Up to 5 mph8 km/h through 10 PM
Dew point: 46°8°; Comfortable · down to 36°2° by 1 PM
Humidity: 93%; Air 48°9°, dew point 46°8° · fog or dew likely
UV index: 1Low; Moderate 12–4 PM · peak 4
Air quality: 18Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.15 inHg1021 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Fog until 11 AM
Above 60°16° today by noon
High 65°18° today at 2 PM
Below 50°10° tonight after 9 PM
Low 34°1° tomorrow at 8 AM

This morningUp to 54°12° by 11 AM · Partly cloudy
This afternoonUp to 65°18° by 2 PM · Clear
TonightDown to 38°3° by 5 AM · Clear
Tomorrow morningUp to 56°13° by 11 AM · Clear
Tomorrow afternoonUp to 73°23° by 4 PM · Partly cloudy
Tomorrow nightDown to 40°4° by 5 AM · Partly cloudy
Sunday morningUp to 43°6° by 9 AM · 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 10a	Fog	48°9° (likely 48°9° to 52°11°)	48°9°	0%	1 mph2 km/h from W, gusts 4 mph6 km/h	93%	46%	1
Fri 11a	Sunny	54°12° (likely 52°11° to 54°12°)	54°12°	0%	2 mph3 km/h from N, gusts 6 mph9 km/h	66%	13%	2
Fri 12p	Sunny	60°16° (likely 55°13° to 60°16°)	60°16°	0%	2 mph3 km/h from N, gusts 6 mph9 km/h	46%	6%	3
Fri 1p	Sunny	64°18° (likely 58°14° to 64°18°)	64°18°	0%	2 mph3 km/h from N, gusts 9 mph15 km/h	35%	4%	4
Fri 2p	Sunny	65°18° (likely 59°15° to 65°18°)	65°18°	0%	1 mph2 km/h from NNE, gusts 12 mph20 km/h	29%	0%	3
Fri 3p	Sunny	65°18° (likely 61°16° to 65°18°)	65°18°	0%	1 mph2 km/h from NNE, gusts 12 mph20 km/h	26%	3%	3
Fri 4p	Sunny	65°18° (likely 61°16° to 65°18°)	65°18°	0%	1 mph2 km/h from NNE, gusts 10 mph16 km/h	27%	0%	1
Fri 5p	Sunny	65°18° (likely 59°15° to 65°18°)	65°18°	0%	2 mph3 km/h from ESE, gusts 9 mph15 km/h	26%	0%	2
Fri 6p	Clear	61°16° (likely 55°13° to 61°16°)	61°16°	0%	2 mph3 km/h from ESE, gusts 9 mph15 km/h	35%	0%	1
Fri 7p	Clear	56°13° (likely 51°11° to 56°13°)	56°13°	0%	2 mph3 km/h from ESE, gusts 4 mph7 km/h	40%	0%	0
Fri 8p	Clear	51°11° (likely 48°9° to 51°11°)	49°9°	0%	5 mph8 km/h from ESE, gusts 4 mph7 km/h	46%	0%	0
Fri 9p	Clear	48°9° (likely 45°7° to 50°10°)	46°8°	0%	5 mph8 km/h from ESE, gusts 6 mph10 km/h	48%	0%	0
Fri 10p	Clear	46°8° (likely 43°6° to 49°9°)	43°6°	0%	5 mph8 km/h from ESE, gusts 6 mph9 km/h	47%	0%	0
Fri 11p	Clear	45°7° (likely 41°5° to 49°9°)	41°5°	0%	7 mph11 km/h from ESE, gusts 5 mph8 km/h	49%	1%	0
Sat 12a	Clear	43°6° (likely 41°5° to 48°9°)	39°4°	0%	7 mph11 km/h from ESE, gusts 5 mph7 km/h	51%	1%	0
Sat 1a	Clear	42°6° (likely 40°4° to 46°8°)	38°3°	0%	7 mph11 km/h from ESE, gusts 4 mph7 km/h	51%	1%	0
Sat 2a	Clear	41°5° (likely 39°4° to 46°8°)	38°3°	0%	6 mph10 km/h from ESE, gusts 3 mph5 km/h	53%	1%	0
Sat 3a	Clear	40°4° (likely 39°4° to 47°8°)	36°2°	0%	6 mph10 km/h from ESE, gusts 4 mph6 km/h	52%	3%	0
Sat 4a	Clear	40°4° (likely 38°3° to 46°8°)	36°2°	0%	6 mph10 km/h from ESE, gusts 4 mph6 km/h	52%	40%	0
Sat 5a	Clear	38°3° (likely 37°3° to 46°8°)	34°1°	0%	6 mph10 km/h from SSE, gusts 3 mph6 km/h	54%	35%	0
Sat 6a	Mostly clear	36°2° (likely 36°2° to 47°8°)	31°−1°	0%	6 mph10 km/h from SSE, gusts 4 mph6 km/h	56%	9%	0
Sat 7a	Clear	36°2° (likely 36°2° to 47°8°)	31°−1°	0%	6 mph10 km/h from SSE, gusts 4 mph7 km/h	59%	4%	0
Sat 8a	Sunny	34°1° (likely 34°1° to 46°8°)	32°0°	0%	3 mph5 km/h from SSE, gusts 4 mph6 km/h	59%	4%	0
Sat 9a	Sunny	39°4° (likely 39°4° to 49°9°)	37°3°	0%	3 mph5 km/h from SSE, gusts 3 mph5 km/h	59%	4%	1
Sat 10a	Sunny	48°9° (likely 48°9° to 55°13°)	47°8°	0%	3 mph5 km/h from SSE, gusts 3 mph5 km/h	44%	5%	2
Sat 11a	Sunny	56°13° (likely 56°13° to 61°16°)	56°13°	0%	3 mph5 km/h from NE, gusts 6 mph9 km/h	34%	44%	3
Sat 12p	Sunny	62°17° (likely 60°16° to 65°18°)	62°17°	0%	3 mph5 km/h from NE, gusts 7 mph11 km/h	26%	15%	4
Sat 1p	Sunny	68°20° (likely 64°18° to 69°21°)	68°20°	0%	3 mph5 km/h from NE, gusts 7 mph11 km/h	22%	24%	4
Sat 2p	Sunny	71°22° (likely 66°19° to 71°22°)	71°22°	0%	6 mph10 km/h from ENE, gusts 6 mph9 km/h	20%	33%	4
Sat 3p	Sunny	72°22° (likely 67°19° to 72°22°)	72°22°	0%	6 mph10 km/h from ENE, gusts 5 mph8 km/h	20%	41%	4
Sat 4p	Sunny	73°23° (likely 66°19° to 73°23°)	73°23°	0%	6 mph10 km/h from ENE, gusts 5 mph7 km/h	20%	42%	3
Sat 5p	Sunny	72°22° (likely 64°18° to 72°22°)	72°22°	0%	0 mph0 km/h, gusts 4 mph7 km/h	22%	40%	2
Sat 6p	Clear	67°19° (likely 60°16° to 67°19°)	67°19°	0%	0 mph0 km/h, gusts 3 mph5 km/h	27%	38%	0
Sat 7p	Clear	63°17° (likely 56°13° to 63°17°)	63°17°	0%	0 mph0 km/h, gusts 2 mph3 km/h	31%	24%	0
Sat 8p	Clear	56°13° (likely 52°11° to 60°16°)	56°13°	0%	0 mph0 km/h, gusts 3 mph4 km/h	37%	4%	0
Sat 9p	Mostly clear	53°12° (likely 50°10° to 59°15°)	53°12°	0%	0 mph0 km/h, gusts 3 mph4 km/h	38%	13%	0
Sat 10p	Mostly clear	52°11° (likely 48°9° to 57°14°)	52°11°	0%	0 mph0 km/h, gusts 3 mph5 km/h	39%	33%	0
Sat 11p	Clear	50°10° (likely 47°8° to 56°13°)	50°10°	0%	0 mph0 km/h, gusts 3 mph5 km/h	41%	51%	0
Sun 12a	Clear	48°9° (likely 45°7° to 55°13°)	48°9°	0%	0 mph0 km/h, gusts 3 mph4 km/h	44%	48%	0
Sun 1a	Clear	46°8° (likely 44°7° to 54°12°)	46°8°	0%	0 mph0 km/h, gusts 3 mph5 km/h	47%	62%	0
Sun 2a	Mostly clear	45°7° (likely 43°6° to 53°12°)	45°7°	0%	0 mph0 km/h, gusts 3 mph6 km/h	49%	73%	0
Sun 3a	Mostly clear	43°6° (likely 42°6° to 52°11°)	43°6°	0%	0 mph0 km/h, gusts 3 mph4 km/h	55%	75%	0
Sun 4a	Cloudy	41°5° (likely 41°5° to 50°10°)	41°5°	0%	0 mph0 km/h, gusts 3 mph4 km/h	60%	66%	0
Sun 5a	Cloudy	40°4° (likely 40°4° to 48°9°)	40°4°	0%	0 mph0 km/h, gusts 3 mph5 km/h	62%	58%	0
Sun 6a	Mostly clear	38°3° (likely 38°3° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	67%	55%	0
Sun 7a	Mostly clear	37°3° (likely 37°3° to 45°7°)	37°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	70%	57%	0
Sun 8a	Mostly sunny	38°3° (likely 38°3° to 46°8°)	38°3°	0%	0 mph0 km/h, gusts 3 mph5 km/h	70%	60%	0
Sun 9a	Mostly sunny	43°6° (likely 43°6° to 51°11°)	43°6°	0%	0 mph0 km/h, gusts 3 mph5 km/h	62%	47%	1

Days ahead

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

Today, Oct 23. Cloudy. High 65°18°, low 33°1°. Typical 72°22° / 37°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 54°12°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Official NWS forecast
Today: Patchy fog before 11am. Sunny, with a high near 65. North wind around 2 mph.
Tonight: Mostly clear. Low around 33, with temperatures rising to around 38 overnight. East southeast wind 2 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–65°18°
Low, likely
33°1°–49°9°
Typical high / low
72°22° / 37°3°
Wind
9 mph14 km/h, gusts 16 mph25 km/h
UV peak
4
Tomorrow, Oct 24. Mostly sunny. High 73°23°, low 37°3°. Typical 71°22° / 37°3°. Dry. Mostly agree. Best day outdoors this week.
1. Morning
  6 AM–noon
  Sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 73°23°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 40°4°
  Dry
Official NWS forecast
Day: Sunny, with a high near 73. East northeast wind 0 to 6 mph.
Night: Mostly clear, with a low around 37. Wind around 0 mph.
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 73°23°).
High, likely
67°19°–73°23°
Low, likely
36°2°–46°8°
Typical high / low
71°22° / 37°3°
Wind
4 mph7 km/h, gusts 13 mph21 km/h
UV peak
4
Sunday, Oct 25. Mostly sunny. High 70°21°, low 36°2°. Typical 70°21° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Mostly sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 70. East southeast wind 0 to 3 mph.
Night: Mostly clear, with a low around 36. East northeast wind around 2 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–71°22°
Low, likely
36°2°–44°7°
Typical high / low
70°21° / 37°3°
Wind
8 mph12 km/h, gusts 19 mph30 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 63°17°, low 33°1°. Typical 70°21° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 41°5°
  Dry
2. Afternoon
  noon–6 PM
  Drizzle, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 63.
Night: Patchy fog after 5am. Partly cloudy, with a low around 33.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
53°12°–63°17°
Low, likely
33°1°–41°5°
Typical high / low
70°21° / 37°3°
Wind
10 mph17 km/h, gusts 28 mph45 km/h
UV peak
2
Tuesday, Oct 27. Fog. High 65°18°, low 34°1°. Typical 69°21° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 37°3°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy fog before 8am. Sunny, with a high near 65.
Night: Partly cloudy, with a low around 34.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–65°18°
Low, likely
34°1°–38°3°
Typical high / low
69°21° / 37°3°
Wind
4 mph6 km/h, gusts 18 mph29 km/h
UV peak
4
Wednesday, Oct 28. Partly sunny. High 66°19°, low 35°2°. Typical 69°21° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 66.
Night: Partly cloudy, with a low around 35.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
58°14°–67°19°
Low, likely
34°1°–42°6°
Typical high / low
69°21° / 37°3°
Wind
7 mph11 km/h, gusts 19 mph31 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 65°18°, low 34°1°. Typical 68°20° / 37°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°11°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65.
Night: Partly cloudy, with a low around 34.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–67°19°
Low, likely
34°1°–45°7°
Typical high / low
68°20° / 37°3°
Wind
8 mph12 km/h, gusts 19 mph30 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 60°16°, low 38°3°. Typical 68°20° / 37°3°. Rain 0.16 in4.1 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 61°16°
  20% chance · 0.08 in1.9 mm
3. Evening
  6 PM–midnight
  Cloudy, 49°9°
  30% chance · 0.12 in3 mm
4. Overnight
  midnight–6 AM
  Cloudy, 41°5°
  30% chance · 0.05 in1.2 mm
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
53°12°–68°20°
Low, likely
31°−1°–49°9°
Typical high / low
68°20° / 37°3°
Wind
5 mph9 km/h, gusts 18 mph28 km/h
UV peak
4
Saturday, Oct 31. Drizzle. High 59°15°, low 39°4°. Typical 67°19° / 37°3°. Rain 0.11 in2.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 45°7°
  30% chance · 0.07 in1.7 mm
2. Afternoon
  noon–6 PM
  Cloudy, 60°16°
  30% chance
3. Evening
  6 PM–midnight
  Mostly clear, 49°10°
  30% chance
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  30% chance · 0.04 in1.1 mm
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
55°13°–69°21°
Low, likely
34°1°–47°8°
Typical high / low
67°19° / 37°3°
Wind
6 mph10 km/h, gusts 12 mph19 km/h
UV peak
3
Sunday, Nov 1. Mostly sunny. High 61°16°, low 39°4°. Typical 66°19° / 37°3°. Rain 0.29 in7.4 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°5°
  30% chance · 0.13 in3.2 mm
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  30% chance · 0.08 in2 mm
3. Evening
  6 PM–midnight
  Clear, 50°10°
  30% chance · 0.05 in1.2 mm
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
55°13°–67°19°
Low, likely
31°−1°–53°12°
Typical high / low
66°19° / 37°3°
Wind
4 mph7 km/h, gusts 13 mph22 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 65°, low 33°.
Tomorrow
Dry, high 73°, low 37°, warming up.
Sunday
Dry, high 70°, low 36°, cooling off.
Rest of week
Mostly dry, highs 59–66°.

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

Rush Creek (CA) near Lewiston

2.0 mi

Level: 0.3 ft
Flow: 3 cfs

Reading from Fri 10 AM · NWS gauge page

Trinity River near Lewiston

2.2 mi

Level: 13.8 ft
Flow: 315 cfs

Reading from Fri 10 AM · NWS gauge page

Indian Creek (CA) near Douglas City

5.7 mi

Level: 1.1 ft
Flow: 8 cfs

Reading from Fri 9:30 AM · NWS gauge page

Trinity River at Douglas City

11 mi

Level: 6.5 ft
Flow: 390 cfs

Reading from Fri 10 AM · NWS gauge page

For your home

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

Heating this week

About 65% less heating than a typical week.

This week 28Typical 81

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 21
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 46°F).

Open the windows?

Today, 12:00 PM–6:00 PM

Good stretch to open the windows.

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 7°4° colder than typical.

Last 7 days vs normal

—SatOct 17
—SunOct 18
—MonOct 19
—TueOct 20
—WedOct 21
—ThuOct 22
—FriOct 23

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

Sun & moon

Sun

Daylight: 10 h 48 min; Losing 2 min 30 s a day; shortest Dec 21, 1 h 32 min less
Golden hour: 5:41–6:36 PM; Morning 7:14–8:09 AM
Blue hour: 6:36–6:46 PM; Morning 7:03–7:14 AM; first light 7:03 AM

Stars tonight? Fair

Clear 6:46 PM–4 AM, but the moon is 96% lit and up.

Moon

Waxing gibbous

93% lit · growing

Today: sets 4:43 AM · rises 4:53 PM
Full moon: Oct 25
New moon: Nov 8

Looking northwest from Lewiston. The highest point on the skyline is about 8,500 ft, 21 mi away.Skyline from USGS elevation data, heights drawn up to 4× taller. Sky, sun and moon as they are now.

1 active weather alert

Freeze Warning

Lewiston, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Sunday

Rest of week

What changed since yesterday

Radar

Rivers

Rush Creek (CA) near Lewiston

Trinity River near Lewiston

Indian Creek (CA) near Douglas City

Trinity River at Douglas City

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 23, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon