As of 04:20 PDT

Weather in Riverside Grove, CA

57°

Riverside Grove, Sunday, 9 August, 04:20

Clear. Feels like 57°. High 84°, low 57°.

Pressure29.85 inHg

Wind2.2 mph S

Humidity90%

Visibility6.2 mi

Dew point53°

See detailed hourly forecast

Monthly outlook for Riverside Grove, CA: average high 75.2°, average low 51.4°. That is 3.1° below the climate normal for August. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 0 days and 0.1 inches. The warmest day looks like 9 August (84.5°), the coolest 24 August (47.5°).

75.2°/51.4°

Average high / low

−3.1°

Below 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	75.8°	81.3°	-3.1°
19 August – 28 August	74.2°	80.7°	-3.6°
29 August – 7 September	at normal	82°	—

August records over 66 years

102.6°3 August 1998All-time high

48.9°23 August 1973All-time low

Climate normals and records are computed from the nearest reference point — Cupertino (11 mi).

Mon, 1082° / 55°

82 °

Riverside Grove, Monday, 10 August

Clear. High 82°, low 55°.

Pressure29.88 inHg

Wind5.7 mph SW

Humidity35%

Visibility6.2 mi

Dew point49°

Tue, 1182° / 53°

82 °

Riverside Grove, Tuesday, 11 August

Mostly clear. High 82°, low 53°.

Pressure29.91 inHg

Wind5.9 mph SW

Humidity31%

Visibility6.2 mi

Dew point45°

Wed, 1275° / 50°

75 °

Riverside Grove, Wednesday, 12 August

Clear. High 75°, low 50°.

Pressure29.85 inHg

Wind7 mph SW

Humidity46%

Visibility6.2 mi

Dew point51°

Thu, 1370° / 52°

70 °

Riverside Grove, Thursday, 13 August

Mostly clear. High 70°, low 52°.

Pressure29.88 inHg

Wind8.4 mph S

Humidity51%

Visibility—

Dew point49°

Fri, 1474° / 51°

74 °

Riverside Grove, Friday, 14 August

Clear. High 74°, low 51°.

Pressure29.94 inHg

Wind7 mph SW

Humidity43%

Visibility—

Dew point48°

Sat, 1574° / 50°

74 °

Riverside Grove, Saturday, 15 August

Partly cloudy. High 74°, low 50°.

Pressure30.00 inHg

Wind5.8 mph SW

Humidity42%

Visibility—

Dew point47°

Sun, 1673° / 51°

73 °

Riverside Grove, Sunday, 16 August

Overcast. High 73°, low 51°.

Pressure30.06 inHg

Wind6.4 mph SW

Humidity48%

Visibility—

Dew point50°

Mon, 1770° / 49°

70 °

Riverside Grove, Monday, 17 August

Overcast. High 70°, low 49°.

Pressure30.09 inHg

Wind7.4 mph SW

Humidity49%

Visibility—

Dew point48°

Tue, 1874° / 50°

74 °

Riverside Grove, Tuesday, 18 August

Clear. High 74°, low 50°.

Pressure30.00 inHg

Wind8.4 mph NW

Humidity50%

Visibility—

Dew point53°

Wed, 1976° / 56°

76 °

Riverside Grove, Wednesday, 19 August

Clear. High 76°, low 56°.

Pressure29.97 inHg

Wind9.5 mph NW

Humidity50%

Visibility—

Dew point54°

Thu, 2075° / 53°

75 °

Riverside Grove, Thursday, 20 August

Overcast. High 75°, low 53°.

Pressure29.97 inHg

Wind9.3 mph NW

Humidity49%

Visibility—

Dew point53°

Fri, 2172° / 50°

72 °

Riverside Grove, Friday, 21 August

Overcast. High 72°, low 50°.

Pressure29.94 inHg

Wind8.1 mph NW

Humidity43%

Visibility—

Dew point46°

Sat, 2274° / 50°

74 °

Riverside Grove, Saturday, 22 August

Clear. High 74°, low 50°.

Pressure29.94 inHg

Wind7.2 mph W

Humidity42%

Visibility—

Dew point47°

Sun, 2374° / 49°

74 °

Riverside Grove, Sunday, 23 August

Clear. High 74°, low 49°.

Pressure29.94 inHg

Wind7.2 mph W

Humidity43%

Visibility—

Dew point48°

Mon, 2474° / 47°

74 °

Riverside Grove, Monday, 24 August

Clear. High 74°, low 47°.

Pressure29.88 inHg

Wind6.4 mph SW

Humidity42%

Visibility—

Dew point47°

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

Tue, 2580° / 58°

80 °

Riverside Grove, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high80°

Average low58°

Average precipitation0 in

Chance of precipitation2%

Record high96° (1988)

Record low54° (1970)

Wed, 2681° / 58°

81 °

Riverside Grove, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high81°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high94° (1999)

Record low53° (1970)

Thu, 2783° / 59°

83 °

Riverside Grove, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high83°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high97° (1962)

Record low51° (1960)

Fri, 2883° / 60°

83 °

Riverside Grove, Friday, 28 August

Climate normal for this date — 60-year average.

Average high83°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high100° (2021)

Record low52° (1995)

Sat, 2982° / 59°

82 °

Riverside Grove, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high82°

Average low59°

Average precipitation0 in

Chance of precipitation2%

Record high97° (1968)

Record low51° (1980)

Sun, 3080° / 59°

80 °

Riverside Grove, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high80°

Average low59°

Average precipitation0 in

Chance of precipitation2%

Record high94° (2007)

Record low51° (2010)

Mon, 3181° / 59°

81 °

Riverside Grove, Monday, 31 August

Climate normal for this date — 60-year average.

Average high81°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high95° (2025)

Record low53° (2008)

Tue, 0183° / 59°

83 °

Riverside Grove, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high83°

Average low59°

Average precipitation0 in

Chance of precipitation2%

Record high108° (2017)

Record low51° (1964)

Wed, 0282° / 60°

82 °

Riverside Grove, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high82°

Average low60°

Average precipitation0 in

Chance of precipitation3%

Record high109° (2017)

Record low52° (1964)

Thu, 0382° / 60°

82 °

Riverside Grove, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high82°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high101° (2017)

Record low52° (1995)

Fri, 0482° / 60°

82 °

Riverside Grove, Friday, 4 September

Climate normal for this date — 60-year average.

Average high82°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high98° (1988)

Record low52° (1960)

Sat, 0583° / 60°

83 °

Riverside Grove, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high83°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high102° (2022)

Record low51° (1965)

Sun, 0683° / 60°

83 °

Riverside Grove, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high83°

Average low60°

Average precipitation0 in

Chance of precipitation0%

Record high114° (2022)

Record low52° (2001)

Mon, 0783° / 61°

83 °

Riverside Grove, Monday, 7 September

Climate normal for this date — 60-year average.

Average high83°

Average low61°

Average precipitation0 in

Chance of precipitation0%

Record high105° (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 Riverside Grove, 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 Riverside Grove, 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.