As of 00:15 PDT

Weather in Rosemary, CA

61°

Rosemary, Sunday, 9 August, 00:15

Overcast. Feels like 61°. High 85°, low 61°.

Pressure29.88 inHg

Wind2 mph S

Humidity92%

Visibility6.2 mi

Dew point60°

See detailed hourly forecast

Monthly outlook for Rosemary, CA: average high 78.9°, average low 57.8°. That is 0.8° above the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.0 inches. The warmest day looks like 11 August (86.6°), the coolest 14 August (55.1°).

78.9°/57.8°

Average high / low

+0.8°

Above normal

0 / 0

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
9 August – 18 August	79.7°	77.6°	+1.2°
19 August – 28 August	77.5°	77.9°	-0.2°
29 August – 7 September	at normal	79.4°	—

August records over 66 years

103.5°19 August 2020All-time high

49.1°4 August 2025All-time low

Climate normals and records are computed from the nearest reference point — Santa Maria (3 mi).

Mon, 1086° / 65°

86 °

Rosemary, Monday, 10 August

Partly cloudy. High 86°, low 65°.

Pressure29.88 inHg

Wind9.7 mph W

Humidity32%

Visibility6.2 mi

Dew point55°

Tue, 1187° / 63°

87 °

Rosemary, Tuesday, 11 August

Clear. High 87°, low 63°.

Pressure29.94 inHg

Wind10.2 mph W

Humidity34%

Visibility6.2 mi

Dew point54°

Wed, 1280° / 57°

80 °

Rosemary, Wednesday, 12 August

Partly cloudy. High 80°, low 57°.

Pressure29.88 inHg

Wind9.9 mph W

Humidity42%

Visibility6.2 mi

Dew point54°

Thu, 1376° / 55°

76 °

Rosemary, Thursday, 13 August

Clear. High 76°, low 55°.

Pressure29.88 inHg

Wind11.4 mph W

Humidity49%

Visibility—

Dew point54°

Fri, 1477° / 55°

77 °

Rosemary, Friday, 14 August

Clear. High 77°, low 55°.

Pressure29.97 inHg

Wind11.8 mph W

Humidity48%

Visibility—

Dew point54°

Sat, 1572° / 56°

72 °

Rosemary, Saturday, 15 August

Overcast. High 72°, low 56°.

Pressure30.03 inHg

Wind5.7 mph W

Humidity51%

Visibility—

Dew point51°

Sun, 1680° / 58°

80 °

Rosemary, Sunday, 16 August

Overcast. High 80°, low 58°.

Pressure30.09 inHg

Wind12.6 mph W

Humidity44%

Visibility—

Dew point53°

Mon, 1777° / 56°

77 °

Rosemary, Monday, 17 August

Clear. High 77°, low 56°.

Pressure30.06 inHg

Wind10.7 mph W

Humidity40%

Visibility—

Dew point49°

Tue, 1877° / 55°

77 °

Rosemary, Tuesday, 18 August

Overcast. High 77°, low 55°.

Pressure29.97 inHg

Wind11.3 mph W

Humidity41%

Visibility—

Dew point50°

Wed, 1980° / 59°

80 °

Rosemary, Wednesday, 19 August

Clear. High 80°, low 59°.

Pressure29.91 inHg

Wind11 mph W

Humidity49%

Visibility—

Dew point56°

Thu, 2080° / 60°

80 °

Rosemary, Thursday, 20 August

Partly cloudy. High 80°, low 60°.

Pressure29.94 inHg

Wind9.8 mph W

Humidity49%

Visibility—

Dew point57°

Fri, 2178° / 56°

78 °

Rosemary, Friday, 21 August

Mostly clear. High 78°, low 56°.

Pressure29.94 inHg

Wind10.2 mph W

Humidity47%

Visibility—

Dew point55°

Sat, 2277° / 56°

77 °

Rosemary, Saturday, 22 August

Clear. High 77°, low 56°.

Pressure29.97 inHg

Wind10 mph W

Humidity46%

Visibility—

Dew point53°

Sun, 2376° / 57°

76 °

Rosemary, Sunday, 23 August

Clear. High 76°, low 57°.

Pressure29.94 inHg

Wind9.9 mph W

Humidity46%

Visibility—

Dew point51°

Mon, 2474° / 56°

74 °

Rosemary, Monday, 24 August

Clear. High 74°, low 56°.

Pressure29.91 inHg

Wind10.3 mph W

Humidity50%

Visibility—

Dew point52°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 2578° / 60°

78 °

Rosemary, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high91° (1985)

Record low53° (2022)

Wed, 2678° / 60°

78 °

Rosemary, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high78°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high89° (2024)

Record low52° (2021)

Thu, 2780° / 59°

80 °

Rosemary, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high80°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high96° (2009)

Record low52° (1973)

Fri, 2880° / 61°

80 °

Rosemary, Friday, 28 August

Climate normal for this date — 60-year average.

Average high80°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high98° (2023)

Record low52° (2010)

Sat, 2980° / 61°

80 °

Rosemary, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high80°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high94° (2009)

Record low52° (2020)

Sun, 3080° / 61°

80 °

Rosemary, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high80°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high94° (2023)

Record low52° (2022)

Mon, 3178° / 60°

78 °

Rosemary, Monday, 31 August

Climate normal for this date — 60-year average.

Average high78°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high92° (2017)

Record low50° (2022)

Tue, 0179° / 60°

79 °

Rosemary, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high101° (2017)

Record low52° (1964)

Wed, 0279° / 61°

79 °

Rosemary, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high79°

Average low61°

Average precipitation0 in

Chance of precipitation2%

Record high111° (2017)

Record low52° (2021)

Thu, 0379° / 60°

79 °

Rosemary, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0 in

Chance of precipitation2%

Record high105° (2022)

Record low51° (2021)

Fri, 0479° / 60°

0.02

79 °

Rosemary, Friday, 4 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0.02 in

Chance of precipitation3%

Record high103° (2022)

Record low49° (2021)

Sat, 0580° / 61°

0.01

80 °

Rosemary, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high80°

Average low61°

Average precipitation0.01 in

Chance of precipitation3%

Record high106° (2024)

Record low52° (2021)

Sun, 0680° / 61°

80 °

Rosemary, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high80°

Average low61°

Average precipitation0 in

Chance of precipitation2%

Record high114° (2020)

Record low52° (2021)

Mon, 0779° / 60°

79 °

Rosemary, Monday, 7 September

Climate normal for this date — 60-year average.

Average high79°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high109° (2020)

Record low52° (1978)

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Rosemary, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Rosemary, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.