Weather in Castro

14-day forecast · updated today, Wednesday, October 28, at 8:41 pm (GMT-3)

Now · clear sky 55 °F

Feels like: 54 °F
Low / high: 45 / 64 °F
Rain: 0%
Wind: 2 mph SSW

→ 30.10 inHg · steady UV 8 · high

Today in Castro: mainly clear, 45 °F to 64 °F, with a 0% chance of rain and a light air from the south-southwest (2 mph). Tomorrow, light drizzle, 47 °F to 66 °F and a 82% chance of rain. The warmest day of the week is Thursday 29, at 66 °F.

Temperatures for the next 14 days

64° 45°
Today
66° 47°
Thu 29
60° 48°
Fri 30
63° 41°
Sat 31
58° 47°
Sun 1
57° 42°
Mon 2
60° 43°
Tue 3
61° 47°
Wed 4
55° 49°
Thu 5
61° 47°
Fri 6
58° 49°
Sat 7
59° 47°
Sun 8
56° 43°
Mon 9
63° 46°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 28	Mainly clear	45 / 64 °F	0%	6 mph SSW	0.6 ft	3:05 am · 3:35 pm	ECMWF
Thu 29	Light drizzle	47 / 66 °F	82% · 0.05 in	8 mph WSW	0.5 ft	3:47 am · 4:23 pm	ECMWF
Fri 30	Overcast	48 / 60 °F	2%	8 mph S	0.3 ft	4:37 am · 5:21 pm	ECMWF
Sat 31	Overcast	41 / 63 °F	24%	9 mph NW	0.8 ft	5:37 am · 6:35 pm	ECMWF
Sun 1	Light rain	47 / 58 °F	98% · 0.47 in	13 mph WNW	0.7 ft	6:55 am · 8:08 pm	ECMWF
Mon 2	Light drizzle	42 / 57 °F	74% · 0.07 in	7 mph SSW	0.7 ft	8:28 am · 9:37 pm	ECMWF
Tue 3	Overcast	43 / 60 °F	43%	5 mph SSW	0.8 ft	9:52 am · 10:42 pm	ECMWF
Wed 4	Overcast	47 / 61 °F	72%	7 mph SW	0.4 ft	10:56 am · 11:32 pm	ECMWF
Thu 5	Drizzle	49 / 55 °F	61% · 0.28 in	9 mph SSW	0.4 ft	11:48 am	ECMWF
Fri 6	Overcast	47 / 61 °F	13%	9 mph SW	1.0 ft	12:13 am · 12:32 pm	ECMWF
Sat 7	Drizzle	49 / 58 °F	25% · 0.08 in	10 mph NW	2.0 ft	12:51 am · 1:12 pm	ECMWF
Sun 8	Drizzle	47 / 59 °F	43% · 0.20 in	12 mph WSW	1.7 ft	1:26 am · 1:49 pm	ECMWF
Mon 9	Overcast	43 / 56 °F	22%	5 mph NNW	1.0 ft	1:59 am · 2:24 pm	ECMWF
Tue 10	Light drizzle	46 / 63 °F	20% · 0.02 in	10 mph NW	1.8 ft	2:31 am · 2:57 pm	ECMWF

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Clear	Clear	Clear sky	Clear sky	Clear sky	Clear sky	Clear
Temperature	49°	47°	46°	54°	60°	63°	63°	55°
Chance of rain	0%	0%	0%	0%	0%	0%	0%	0%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	5 WSW	4 WSW	4 WSW	4 SW	3 SE	5 ESE	4 ESE	2 SW
Humidity	88%	87%	88%	79%	71%	70%	66%	86%
UV	0	0	0	1	7	7	1	0
Model	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF	ECMWF

Do the models agree?

Medium confidence

They broadly agree, but not quite on temperature today: take it with some caution.

What 4 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	64°	66°	60°	63°	58°	57°	60°
AIFS	70°	65°	64°	61°	60°	57°	60°
GFS	66°	68°	62°	62°	59°	58°	61°
ICON	65°	68°	60°	61°	59°	57°	61°
Confidence	medium	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	0	0.05 in	0	0	0.47 in	0.07 in	0
AIFS	0	0.08 in	0.02 in	0.02 in	0.27 in	0.10 in	0.04 in
GFS	0	0	0	0	0.10 in	0	0
ICON	0	0.06 in	0	0	0	0.05 in	0
Confidence	high	medium	high	high	medium	medium	medium

Do the models agree? · Wind
Wind (mph)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	616	822	820	923	1340	730	518
AIFS	5	7	6	8	11	9	6
GFS	65	720	86	619	925	88	57
ICON	715	616	714	1225	1224	715	818
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF (51 scenarios)	0%	82%	2%	24%	98%	74%	43%
GFS (GEFS, 31 scenarios)	0%	48%	0%	9%	94%	60%	31%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer and normal rain.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	A bit above +1.8 °F	A bit below −37%	—
Nov 9 – Nov 15Nov 9–Nov 15	Above +3.6 °F	Normal	60° / 47°
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.0 °F	Normal	60° / 46°
Nov 23 – Nov 29Nov 23–Nov 29	Above +2.7 °F	Normal	61° / 47°
Nov 30 – Dec 6Nov 30–Dec 6	Above +2.7 °F	Normal	62° / 48°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +2.0 °F	Normal
December	A bit above +2.0 °F	Normal
January	Above +2.9 °F	Normal
February	Above +2.7 °F	Normal
March	A bit above +2.5 °F	Normal

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Castro climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Castro is from January to February: highs of 66 °F, about 9 rainy days a month and 7 hours of sunshine a day.

66° 50°

JanJ
66° 51°

FebF
62° 49°

MarM
58° 47°

AprA
54° 44°

MayM
51° 43°

JunJ
50° 41°

JulJ
51° 41°

AugA
53° 42°

SepS
56° 44°

OctO
59° 46°

NovN
62° 48°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	66°	50°	4.17 in	9	6.9	57°	4.3 ft
FebruaryFeb	66°	51°	3.78 in	8	6.6	57°	4.6 ft
MarchMar	62°	49°	5.02 in	11	4.5	55°	4.9 ft
AprilApr	58°	47°	7.00 in	14	4.7	53°	5.0 ft
MayMay	54°	44°	9.81 in	17	2.7	52°	5.4 ft
JuneJun	51°	43°	11.23 in	19	2.0	51°	5.9 ft
JulyJul	50°	41°	10.33 in	17	2.7	51°	5.7 ft
AugustAug	51°	41°	11.54 in	18	3.1	50°	6.0 ft
SeptemberSep	53°	42°	6.50 in	14	3.7	51°	5.2 ft
OctoberOct	56°	44°	5.50 in	14	4.7	52°	4.8 ft
NovemberNov	59°	46°	5.29 in	12	4.7	54°	4.8 ft
DecemberDec	62°	48°	5.24 in	11	5.7	56°	4.6 ft

Month	Water	Waves
Jan	57°	4.3 ft
Feb	57°	4.6 ft
Mar	55°	4.9 ft
Apr	53°	5.0 ft
May	52°	5.4 ft
Jun	51°	5.9 ft
Jul	51°	5.7 ft
Aug	50°	6.0 ft
Sep	51°	5.2 ft
Oct	52°	4.8 ft
Nov	54°	4.8 ft
Dec	56°	4.6 ft

Days: rainy days in the month. Sun: hours a day.

A normal year brings 85.41 in of rain on about 162 days and about 1,600 hours of sunshine.

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now55 °Ffeels like 54 °F

Tomorrow47 / 66 °F

It's 55 °F now (feels like 54 °F). Today, 45 °F to 64 °F; tomorrow, 47 °F to 66 °F.

Chance of rain

Today 0%
Thu 29 82% 0.05 in
Fri 30 2%
Sat 31 24%
Sun 1 98% 0.47 in
Mon 2 74% 0.07 in
Tue 3 43%

Today the chance of rain reaches 0%. The next day with likely rain is Thursday 29: 82% and 0.05 in.

Recent rain: last 24 hours, 0.00 in; last 3 days, 0.00 in; last 7 days, 0.42 in.

Humidity and dew point

Humidity85%

Dew point51 °F

Humidity is 85% now and the dew point is 51 °F.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds0%

Visibility is good now (15 mi). No fog expected today.

The model gives visibility up to about 15 mi: beyond that, the horizon is clear.

UV index

Now0

Today's peak8high

Thu 29: 8 · Fri 30: 8 · Sat 31: 5

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

30.0030.2030.40 29.93

Steady now (−0.00 inHg in 3 hours). Over the next 48 hours: −0.11 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 12

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Rain	Max wind
Tue 27	Overcast	49 / 61 °F	0	9 mph S
Mon 26	Overcast	50 / 63 °F	0	8 mph SSW
Sun 25	Light drizzle	48 / 64 °F	0.01 in	7 mph SSW
Sat 24	Light drizzle	50 / 65 °F	0.01 in	5 mph ESE
Fri 23	Drizzle	52 / 62 °F	0.20 in	5 mph NW
Thu 22	Drizzle	53 / 63 °F	0.19 in	6 mph ENE
Wed 21	Drizzle	51 / 63 °F	0.16 in	8 mph ENE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Drizzle	47 / 61 °F	0.07 in	6 mph S
Mon 19	Overcast	46 / 62 °F	0	7 mph S
Sun 18	Overcast	46 / 62 °F	0	8 mph SE
Sat 17	Light drizzle	50 / 63 °F	0.04 in	10 mph NNW
Fri 16	Mainly clear	53 / 70 °F	0	7 mph E
Thu 15	Mainly clear	52 / 69 °F	0	4 mph S
Wed 14	Overcast	48 / 65 °F	0	6 mph E
Tue 13	Overcast	46 / 60 °F	0	9 mph SSW
Mon 12	Light drizzle	46 / 60 °F	0.00 in	10 mph SSW
Sun 11	Drizzle	50 / 64 °F	0.11 in	8 mph NNW
Sat 10	Light drizzle	47 / 64 °F	0.05 in	9 mph N
Fri 9	Light drizzle	49 / 64 °F	0.01 in	9 mph NNE
Thu 8	Overcast	49 / 64 °F	0	4 mph SE
Wed 7	Overcast	50 / 63 °F	0	5 mph SSE
Tue 6	Light drizzle	44 / 59 °F	0.07 in	6 mph SSW
Mon 5	Light drizzle	44 / 55 °F	0.13 in	5 mph NE
Sun 4	Light rain	46 / 51 °F	0.72 in	13 mph NW
Sat 3	Light rain	46 / 52 °F	1.16 in	11 mph NNW
Fri 2	Heavy drizzle	47 / 54 °F	0.59 in	12 mph N
Thu 1	Light rain	45 / 59 °F	0.20 in	16 mph N
Wed 30	Heavy drizzle	46 / 55 °F	0.47 in	11 mph NNE
Tue 29	Light drizzle	42 / 56 °F	0.08 in	8 mph N
Mon 28	Heavy drizzle	44 / 54 °F	0.48 in	6 mph N

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in CastroQuestions

What's the weather like today in Castro?

Mainly clear, from 45 °F to 64 °F, with a light air from the south-southwest (2 mph) and a 0% chance of rain.

Will it rain tomorrow in Castro?

On Thursday 29 the chance of rain is 82% (0.05 in): light drizzle.

How warm will it be this week?

Between a low of 41 °F and a high of 66 °F; the warmest day, Thursday 29.

What's the UV index today?

It reaches 8 (high). Sunscreen, hat and shade between 12 and 4 pm.

Is the pressure rising or falling?

It's 30.10 inHg and steady: −0.22 inHg over the last 24 hours.

When is the best time to visit Castro?

The best time to visit Castro is from January to February: highs of 66 °F, about 9 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Castro in October?

In October, Castro normally sees highs of 56 °F and lows of 44 °F, with about 14 rainy days (5.50 in for the month) and 5 hours of sunshine a day. The sea is around 52 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Castro?

The warmest is February, with average highs of 66 °F, and the coldest August, with lows of 41 °F. The wettest is August (11.54 in) and the driest, February.

More about Castro today

Weather near Castro

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 2.3 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 8:41 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from