Frost Advisory
Starts in 2 h 25 min
When
From 8 PM this evening to 10 AM PDT Sunday.
Where
Mendocino County, Northern Lake, Western Lake, and Eastern Lake mainly in the valleys that remain clear.
Issued for this forecast zone · National Weather Service Eureka CA
What, impacts and precautionsHide details
What
Temperatures as low as 35 will result in frost formation.
Impacts
Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Precautionary actions
Take steps now to protect tender plants from the cold.
Areas: Coastal Mendocino; Northwestern Interior Mendocino; Northeastern Interior Mendocino; Southwestern Interior Mendocino; Southeastern Interior Mendocino; Northern Lake; Western Lake; Eastern Lake
See it on weather.gov (opens in a new tab)

Model estimate for 5:00 PM PDT (no recent station report)

Lower Lake, CA weather

Sunny and 73°23°, jacket by 8 PM.

Mostly agree

Now 73°23°

Sunny

Wind: 3 mph5 km/h; From the north. Light through 5 AM
Dew point: 37°3°; Comfortable
UV tomorrow: 4Moderate; Moderate 11 AM–4 PM · peak 4

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Drops 13°7° tonight 6–9 PM (68°20° → 55°13°)
Low 37°3° tomorrow at 6 AM
Above 50°10° tomorrow by 10 AM
Below 60°16° tomorrow night after 8 PM

TonightDown to 40°4° by 5 AM · Partly cloudy
Tomorrow morningUp to 59°15° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 70°21° by 4 PM · Mostly cloudy
Tomorrow nightDown to 44°7° by 4 AM · Clear
Monday morningUp to 57°14° by 11 AM · Clear
Monday afternoonUp to 65°18° by 4 PM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 5p	Sunny	73°23° (likely 69°21° to 73°23°)	73°23°	0%	3 mph5 km/h from N, gusts 4 mph7 km/h	27%	0%	2
Sat 6p	Clear	68°20° (likely 64°18° to 68°20°)	68°20°	0%	3 mph5 km/h from N, gusts 4 mph7 km/h	37%	0%	1
Sat 7p	Clear	62°17° (likely 58°14° to 63°17°)	62°17°	0%	3 mph5 km/h from N, gusts 3 mph5 km/h	45%	0%	0
Sat 8p	Clear	55°13° (likely 54°12° to 59°15°)	55°13°	0%	2 mph3 km/h from E, gusts 3 mph5 km/h	53%	2%	0
Sat 9p	Clear	52°11° (likely 50°10° to 58°14°)	52°11°	0%	2 mph3 km/h from E, gusts 4 mph7 km/h	60%	9%	0
Sat 10p	Clear	50°10° (likely 48°9° to 56°13°)	50°10°	0%	2 mph3 km/h from E, gusts 2 mph4 km/h	61%	16%	0
Sat 11p	Mostly clear	49°9° (likely 46°8° to 54°12°)	49°9°	0%	0 mph0 km/h, gusts 2 mph3 km/h	64%	49%	0
Sun 12a	Mostly clear	48°9° (likely 45°7° to 53°12°)	48°9°	0%	0 mph0 km/h, gusts 2 mph4 km/h	67%	21%	0
Sun 1a	Mostly clear	46°8° (likely 45°7° to 53°12°)	46°8°	0%	0 mph0 km/h, gusts 2 mph4 km/h	68%	37%	0
Sun 2a	Mostly clear	45°7° (likely 44°7° to 52°11°)	45°7°	0%	0 mph0 km/h, gusts 2 mph3 km/h	72%	34%	0
Sun 3a	Mostly clear	42°6° (likely 42°6° to 51°11°)	42°6°	0%	0 mph0 km/h, gusts 2 mph4 km/h	74%	44%	0
Sun 4a	Mostly clear	42°6° (likely 42°6° to 50°10°)	42°6°	0%	0 mph0 km/h, gusts 2 mph3 km/h	74%	65%	0
Sun 5a	Partly cloudy	40°4° (likely 40°4° to 50°10°)	40°4°	0%	0 mph0 km/h, gusts 2 mph2 km/h	74%	73%	0
Sun 6a	Partly cloudy	37°3° (likely 37°3° to 50°10°)	37°3°	0%	0 mph0 km/h, gusts 1 mph2 km/h	80%	75%	0
Sun 7a	Partly sunny	39°4° (likely 39°4° to 49°9°)	39°4°	0%	0 mph0 km/h, gusts 1 mph2 km/h	82%	75%	0
Sun 8a	Mostly cloudy	40°4° (likely 40°4° to 49°9°)	40°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	82%	77%	0
Sun 9a	Cloudy	46°8° (likely 46°8° to 53°12°)	46°8°	0%	0 mph0 km/h, gusts 2 mph4 km/h	75%	77%	1
Sun 10a	Cloudy	54°12° (likely 54°12° to 60°16°)	54°12°	0%	0 mph0 km/h, gusts 3 mph5 km/h	56%	77%	2
Sun 11a	Cloudy	59°15° (likely 59°15° to 66°19°)	59°15°	0%	2 mph3 km/h from SSE, gusts 5 mph8 km/h	49%	76%	3
Sun 12p	Cloudy	63°17° (likely 63°17° to 70°21°)	63°17°	0%	2 mph3 km/h from SSE, gusts 6 mph10 km/h	42%	79%	4
Sun 1p	Cloudy	66°19° (likely 66°19° to 72°22°)	66°19°	0%	2 mph3 km/h from SSE, gusts 8 mph13 km/h	38%	81%	4
Sun 2p	Cloudy	68°20° (likely 68°20° to 73°23°)	68°20°	0%	7 mph11 km/h from S, gusts 8 mph13 km/h	36%	82%	4
Sun 3p	Cloudy	68°20° (likely 68°20° to 72°22°)	68°20°	0%	7 mph11 km/h from S, gusts 10 mph16 km/h	35%	84%	3
Sun 4p	Cloudy	70°21° (likely 67°19° to 71°22°)	70°21°	0%	7 mph11 km/h from S, gusts 11 mph18 km/h	35%	86%	2
Sun 5p	Cloudy	70°21° (likely 65°18° to 70°21°)	70°21°	0%	5 mph8 km/h from S, gusts 11 mph17 km/h	34%	86%	1
Sun 6p	Cloudy	67°19° (likely 62°17° to 67°19°)	67°19°	0%	5 mph8 km/h from S, gusts 8 mph14 km/h	41%	83%	0
Sun 7p	Cloudy	62°17° (likely 58°14° to 62°17°)	62°17°	0%	5 mph8 km/h from S, gusts 6 mph9 km/h	48%	75%	0
Sun 8p	Partly cloudy	57°14° (likely 54°12° to 58°14°)	57°14°	0%	0 mph0 km/h, gusts 5 mph7 km/h	54%	53%	0
Sun 9p	Clear	53°12° (likely 52°11° to 56°13°)	53°12°	0%	0 mph0 km/h, gusts 6 mph10 km/h	61%	12%	0
Sun 10p	Clear	51°11° (likely 50°10° to 53°12°)	51°11°	0%	0 mph0 km/h, gusts 4 mph7 km/h	65%	0%	0
Sun 11p	Clear	49°9° (likely 48°9° to 51°11°)	49°9°	0%	1 mph2 km/h from WNW, gusts 3 mph5 km/h	69%	0%	0
Mon 12a	Clear	48°9° (likely 47°8° to 50°10°)	48°9°	0%	1 mph2 km/h from WNW, gusts 3 mph4 km/h	72%	3%	0
Mon 1a	Clear	47°8° (likely 45°7° to 50°10°)	47°8°	0%	1 mph2 km/h from WNW, gusts 3 mph5 km/h	74%	8%	0
Mon 2a	Clear	46°8° (likely 44°7° to 49°9°)	46°8°	0%	1 mph2 km/h from NNW, gusts 4 mph7 km/h	78%	12%	0
Mon 3a	Clear	46°8° (likely 43°6° to 48°9°)	46°8°	0%	1 mph2 km/h from NNW, gusts 8 mph13 km/h	80%	19%	0
Mon 4a	Clear	44°7° (likely 43°6° to 47°8°)	44°7°	0%	1 mph2 km/h from NNW, gusts 6 mph9 km/h	80%	18%	0
Mon 5a	Clear	44°7° (likely 43°6° to 46°8°)	42°6°	0%	3 mph5 km/h from NW, gusts 7 mph12 km/h	82%	9%	0
Mon 6a	Clear	43°6° (likely 43°6° to 47°8°)	41°5°	0%	3 mph5 km/h from NW, gusts 8 mph13 km/h	87%	14%	0
Mon 7a	Clear	42°6° (likely 42°6° to 48°9°)	40°4°	0%	3 mph5 km/h from NW, gusts 8 mph12 km/h	91%	15%	0
Mon 8a	Sunny	43°6° (likely 43°6° to 49°9°)	41°5°	0%	3 mph5 km/h from W, gusts 11 mph18 km/h	91%	18%	0
Mon 9a	Sunny	47°8° (likely 47°8° to 52°11°)	46°8°	0%	3 mph5 km/h from W, gusts 14 mph23 km/h	87%	11%	1
Mon 10a	Sunny	52°11° (likely 52°11° to 57°14°)	52°11°	0%	3 mph5 km/h from W, gusts 18 mph28 km/h	80%	11%	2
Mon 11a	Sunny	57°14° (likely 57°14° to 60°16°)	57°14°	0%	7 mph11 km/h from W, gusts 18 mph29 km/h	72%	9%	3
Mon 12p	Sunny	60°16° (likely 60°16° to 62°17°)	60°16°	0%	7 mph11 km/h from W, gusts 17 mph27 km/h	65%	6%	4
Mon 1p	Sunny	61°16° (likely 61°16° to 64°18°)	61°16°	0%	7 mph11 km/h from W, gusts 17 mph27 km/h	58%	7%	5
Mon 2p	Sunny	62°17° (likely 62°17° to 65°18°)	62°17°	0%	10 mph16 km/h from W, gusts 16 mph25 km/h	53%	7%	5
Mon 3p	Sunny	64°18° (likely 63°17° to 66°19°)	64°18°	0%	10 mph16 km/h from W, gusts 15 mph24 km/h	48%	20%	4
Mon 4p	Sunny	65°18° (likely 63°17° to 65°18°)	65°18°	0%	10 mph16 km/h from W, gusts 13 mph21 km/h	45%	5%	3

Days ahead

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

Today, Oct 24. Sunny. High 74°23°, low 36°2°. Typical 72°22° / 41°5°. Dry. Mostly agree.
1. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
2. Overnight
  midnight–6 AM
  Mostly clear, 40°4°
  Dry
Official NWS forecast
Today: Sunny, with a high near 74. North wind around 3 mph.
Tonight: Patchy frost after 5am. Mostly clear. Low around 36, with temperatures rising to around 40 overnight. North northeast wind 0 to 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
70°21°–75°24°
Low, likely
36°2°–49°9°
Typical high / low
72°22° / 41°5°
Wind
14 mph22 km/h, gusts 29 mph47 km/h
UV peak
5
Tomorrow, Oct 25. Cloudy. High 72°22°, low 40°4°. Typical 72°22° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Official NWS forecast
Day: Patchy frost before 8am. Partly sunny, with a high near 72. South southeast wind 0 to 7 mph.
Night: Partly cloudy, with a low around 40. West wind 0 to 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–73°23°
Low, likely
40°4°–48°9°
Typical high / low
72°22° / 40°4°
Wind
11 mph17 km/h
UV peak
4
Monday, Oct 26. Mostly sunny. High 66°19°, low 39°4°. Typical 72°22° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 52°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Official NWS forecast
Day: Sunny, with a high near 66. West northwest wind 3 to 10 mph, with gusts as high as 22 mph.
Night: Mostly clear, with a low around 39. Northwest wind 0 to 7 mph, with gusts as high as 18 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–66°19°
Low, likely
39°4°–46°8°
Typical high / low
72°22° / 40°4°
Wind
13 mph22 km/h, gusts 26 mph41 km/h
UV peak
5
Tuesday, Oct 27. Mostly sunny. High 69°21°, low 41°5°. Typical 71°22° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 44°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 53°11°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 69.
Night: Partly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–69°21°
Low, likely
41°5°–45°7°
Typical high / low
71°22° / 40°4°
Wind
8 mph13 km/h, gusts 15 mph24 km/h
UV peak
5
Wednesday, Oct 28. Cloudy. High 68°20°, low 41°5°. Typical 71°22° / 40°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Partly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 47°8°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Mostly cloudy, with a low around 41.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
63°17°–68°20°
Low, likely
41°5°–46°8°
Typical high / low
71°22° / 40°4°
Wind
6 mph9 km/h, gusts 13 mph22 km/h
UV peak
4
Thursday, Oct 29. Rain. High 66°19°, low 39°4°. Typical 70°21° / 39°4°. Rain, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  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: A slight chance of rain after 5pm. Mostly sunny, with a high near 66.
Night: A chance of rain. Partly cloudy, with a low around 39.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
61°16°–68°20°
Low, likely
39°4°–47°8°
Typical high / low
70°21° / 39°4°
Wind
11 mph18 km/h, gusts 32 mph51 km/h
UV peak
4
Friday, Oct 30. Rain. High 64°18°, low 38°3°. Typical 70°21° / 39°4°. Rain, 30% chance. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 39°4°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: A chance of rain. Mostly sunny, with a high near 64.
Night: A slight chance of rain. Partly cloudy, with a low around 38.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–64°18°
Low, likely
38°3°–43°6°
Typical high / low
70°21° / 39°4°
Wind
12 mph19 km/h, gusts 27 mph44 km/h
UV peak
4
Saturday, Oct 31. Cloudy. High 59°15°, low 39°4°. Typical 70°21° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 39°4°
  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
54°12°–64°18°
Low, likely
34°1°–41°5°
Typical high / low
70°21° / 39°4°
Wind
10 mph16 km/h, gusts 21 mph34 km/h
UV peak
4
Sunday, Nov 1. Sunny. High 62°17°, low 38°3°. Typical 69°21° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 62°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 43°6°
  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
57°14°–66°19°
Low, likely
34°1°–41°5°
Typical high / low
69°21° / 38°3°
Wind
5 mph8 km/h, gusts 19 mph30 km/h
UV peak
4
Monday, Nov 2. Cloudy. High 61°16°, low 42°6°. Typical 69°21° / 38°3°. Rain 0.03 in0.8 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 48°9°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 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
57°14°–67°19°
Low, likely
40°4°–44°7°
Typical high / low
69°21° / 38°3°
Wind
7 mph12 km/h, gusts 14 mph22 km/h
UV peak
4

10 days15 days30 days

The outlook

Today
Dry, high 74°, low 36°.
Tomorrow
Dry, high 72°, low 40°.
Monday
Dry, high 66°, low 39°, cooling off.
Rest of week
Mostly dry, highs 59–69°.

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

Putah Creek near Guenoc

11 mi

Below flood stage

Level: 3.2 ft

Forecast peak 3.9 ft Sat 5 PM

Reading from Sat 3:30 PM · NWS gauge page

Kelsey Creek near Kelseyville

13 mi

Below flood stage

Level: 1.6 ft
Flow: 5 cfs

Forecast peak 1.6 ft Sat 5 PM

Reading from Sat 3:45 PM · NWS gauge page

Clear Lake at Lakeport

19 mi

Below flood stage

Level: 1.9 ft
Flow: 74,100 cfs

Forecast peak 1.8 ft Sat 5 PM

Reading from Sat 3:15 PM · NWS gauge page

Cache Creek at Rumsey Bridge

20 mi

Below flood stage

Level: 1.0 ft
Flow: 30 cfs

Forecast peak 1.3 ft Sat 5 PM

Reading from Sat 3:45 PM · NWS gauge page

For your home

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

Heating this week

About 63% less heating than a typical week.

This week 25Typical 67

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 18
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 4 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 37°F).

Open the windows?

Today, 6:00 PM–7:00 PM

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

Is this typical?

CLEARLAKE 4 SE · official normals 1991–2020 · records 1954–2026

Oct 24, today vs a typical year

Today’s expected high is 2°1° warmer than typical.

Last 7 days vs normal

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

+2°+1°MonOct 19
−3°−2°TueOct 20
+2°+1°WedOct 21
+3°+2°ThuOct 22
—FriOct 23
—SatOct 24
—SunOct 25

Lower Lake weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 50 min; Losing 2 min 25 s a day; shortest Dec 21, 1 h 24 min less
Golden hour: 5:42–6:36 PM; Morning 7:12–8:06 AM
Blue hour: 6:36–6:46 PM; Morning 7:02–7:12 AM; first light 7:02 AM

Stars tonight? Fair

Mostly clear 6:46–11 PM, but the moon is 99% lit and up.

Moon

Waxing gibbous

98% lit · growing

Today: sets 5:50 AM · rises 5:19 PM
Full moon: Oct 25
New moon: Nov 8

Looking southwest from Lower Lake. The highest point on the skyline is about 4,700 ft, 10 mi away.Skyline from USGS elevation data, heights drawn up to 5× taller. Sky, sun and moon as they are now.

1 active weather alert

Frost Advisory

Lower Lake, CA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

Putah Creek near Guenoc

Kelsey Creek near Kelseyville

Clear Lake at Lakeport

Cache Creek at Rumsey Bridge

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