As of 11:57 PDT

Weather in Radum, CA

82°

Radum, Saturday, 8 August, 11:57

Overcast. Feels like 84°. High 84°, low 60°.

Pressure29.94 inHg

Wind7.4 mph SW

Humidity52%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

Monthly outlook for Radum, CA: average high 90.3°, average low 60.1°. That is 6.5° above 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 21 August (96.6°), the coolest 16 August (56.9°).

90.3°/60.1°

Average high / low

+6.5°

Above normal

0 / 0

Wet days / normal

0.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 August – 17 August	90°	79.1°	+6°
18 August – 27 August	90.8°	78.3°	+6.9°
28 August – 6 September	at normal	80.1°	—

August records over 66 years

102.2°1 August 1993All-time high

51.4°6 August 2002All-time low

Climate normals and records are computed from the nearest reference point — Hayward (12 mi).

Sun, 0994° / 63°

94 °

Radum, Sunday, 9 August

Clear. High 94°, low 63°.

Pressure29.80 inHg

Wind5.4 mph SW

Humidity13%

Visibility6.2 mi

Dew point39°

Mon, 1094° / 63°

94 °

Radum, Monday, 10 August

Overcast. High 94°, low 63°.

Pressure29.85 inHg

Wind8.2 mph SW

Humidity19%

Visibility6.2 mi

Dew point44°

Tue, 1195° / 61°

95 °

Radum, Tuesday, 11 August

Clear. High 95°, low 61°.

Pressure29.91 inHg

Wind7.6 mph SW

Humidity18%

Visibility6.2 mi

Dew point42°

Wed, 1294° / 61°

94 °

Radum, Wednesday, 12 August

Mostly clear. High 94°, low 61°.

Pressure29.80 inHg

Wind12.1 mph SW

Humidity19%

Visibility—

Dew point42°

Thu, 1390° / 60°

90 °

Radum, Thursday, 13 August

Overcast. High 90°, low 60°.

Pressure29.80 inHg

Wind11.6 mph SW

Humidity24%

Visibility—

Dew point45°

Fri, 1485° / 62°

85 °

Radum, Friday, 14 August

Overcast. High 85°, low 62°.

Pressure29.88 inHg

Wind9 mph SW

Humidity33%

Visibility—

Dew point49°

Sat, 1587° / 58°

87 °

Radum, Saturday, 15 August

Clear. High 87°, low 58°.

Pressure29.97 inHg

Wind10.4 mph W

Humidity25%

Visibility—

Dew point44°

Sun, 1691° / 57°

91 °

Radum, Sunday, 16 August

Overcast. High 91°, low 57°.

Pressure29.97 inHg

Wind9 mph SW

Humidity18%

Visibility—

Dew point38°

Mon, 1788° / 60°

88 °

Radum, Monday, 17 August

Overcast. High 88°, low 60°.

Pressure30.03 inHg

Wind9.3 mph W

Humidity21%

Visibility—

Dew point40°

Tue, 1892° / 60°

92 °

Radum, Tuesday, 18 August

Clear. High 92°, low 60°.

Pressure30.00 inHg

Wind10.9 mph SW

Humidity15%

Visibility—

Dew point35°

Wed, 1987° / 57°

87 °

Radum, Wednesday, 19 August

Clear. High 87°, low 57°.

Pressure29.97 inHg

Wind11.7 mph SW

Humidity23%

Visibility—

Dew point42°

Thu, 2087° / 58°

87 °

Radum, Thursday, 20 August

Clear. High 87°, low 58°.

Pressure29.91 inHg

Wind11.2 mph SW

Humidity30%

Visibility—

Dew point49°

Fri, 2197° / 59°

97 °

Radum, Friday, 21 August

Clear. High 97°, low 59°.

Pressure29.85 inHg

Wind10.6 mph SW

Humidity17%

Visibility—

Dew point41°

Sat, 2294° / 63°

94 °

Radum, Saturday, 22 August

Overcast. High 94°, low 63°.

Pressure29.83 inHg

Wind9.3 mph SW

Humidity21%

Visibility—

Dew point46°

Sun, 2388° / 59°

88 °

Radum, Sunday, 23 August

Overcast. High 88°, low 59°.

Pressure29.85 inHg

Wind11.1 mph SW

Humidity28%

Visibility—

Dew point48°

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

Mon, 2479° / 58°

79 °

Radum, Monday, 24 August

Climate normal for this date — 60-year average.

Average high79°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high101° (2010)

Record low53° (1970)

Tue, 2578° / 58°

78 °

Radum, Tuesday, 25 August

Climate normal for this date — 60-year average.

Average high78°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high95° (2010)

Record low53° (1960)

Wed, 2679° / 58°

79 °

Radum, Wednesday, 26 August

Climate normal for this date — 60-year average.

Average high79°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high93° (1988)

Record low53° (1970)

Thu, 2780° / 58°

80 °

Radum, Thursday, 27 August

Climate normal for this date — 60-year average.

Average high80°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high97° (1993)

Record low53° (2012)

Fri, 2881° / 59°

81 °

Radum, Friday, 28 August

Climate normal for this date — 60-year average.

Average high81°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high98° (2008)

Record low52° (1995)

Sat, 2979° / 58°

79 °

Radum, Saturday, 29 August

Climate normal for this date — 60-year average.

Average high79°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high97° (1968)

Record low52° (1975)

Sun, 3079° / 58°

79 °

Radum, Sunday, 30 August

Climate normal for this date — 60-year average.

Average high79°

Average low58°

Average precipitation0 in

Chance of precipitation5%

Record high93° (1968)

Record low52° (1975)

Mon, 3179° / 58°

79 °

Radum, Monday, 31 August

Climate normal for this date — 60-year average.

Average high79°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high92° (2005)

Record low53° (1975)

Tue, 0181° / 58°

81 °

Radum, Tuesday, 1 September

Climate normal for this date — 60-year average.

Average high81°

Average low58°

Average precipitation0 in

Chance of precipitation3%

Record high101° (2017)

Record low52° (1999)

Wed, 0281° / 59°

81 °

Radum, Wednesday, 2 September

Climate normal for this date — 60-year average.

Average high81°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high103° (2017)

Record low53° (1995)

Thu, 0380° / 58°

80 °

Radum, Thursday, 3 September

Climate normal for this date — 60-year average.

Average high80°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high95° (2008)

Record low52° (2024)

Fri, 0480° / 58°

80 °

Radum, Friday, 4 September

Climate normal for this date — 60-year average.

Average high80°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high96° (2008)

Record low51° (2000)

Sat, 0581° / 58°

81 °

Radum, Saturday, 5 September

Climate normal for this date — 60-year average.

Average high81°

Average low58°

Average precipitation0 in

Chance of precipitation0%

Record high97° (2008)

Record low53° (1970)

Sun, 0681° / 59°

81 °

Radum, Sunday, 6 September

Climate normal for this date — 60-year average.

Average high81°

Average low59°

Average precipitation0 in

Chance of precipitation0%

Record high102° (2022)

Record low53° (1973)

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 Radum, 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 Radum, 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.