Monthly outlook for Porphyry, CA: average high 69.3°, average low 57.1°. That is 2.5° below the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 3 November (77.4°), the coolest 2 November (51.6°).
69.3°/57.1°
Average high / low
−2.5°
Below normal
4 / 2
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
70.6°
74.9°
-2.4°
9 November – 18 November
67.2°
71.5°
-2.4°
19 November – 28 November
at normal
68.7°
—
October records over 66 years
105.4°1 October 2020All-time high
33.3°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Corona (2 mi).
Sat, 3167° / 59°0.13
67 °
Porphyry, Saturday, 31 October
Light rain. High 67°, low 59°.
Pressure29.97 inHg
Wind2.4 mph N
Humidity68%
Visibility6.2 mi
Dew point53°
Sun, 0166° / 54°0.29
66 °
Porphyry, Sunday, 1 November
Rain. High 66°, low 54°.
Pressure29.88 inHg
Wind2.4 mph NW
Humidity81%
Visibility6.2 mi
Dew point58°
Mon, 0274° / 52°0
74 °
Porphyry, Monday, 2 November
Clear. High 74°, low 52°.
Pressure30.09 inHg
Wind2 mph N
Humidity53%
Visibility6.2 mi
Dew point50°
Tue, 0377° / 53°0
77 °
Porphyry, Tuesday, 3 November
Clear. High 77°, low 53°.
Pressure30.06 inHg
Wind3.9 mph NW
Humidity35%
Visibility—
Dew point40°
Wed, 0472° / 55°0.01
72 °
Porphyry, Wednesday, 4 November
Light rain. High 72°, low 55°.
Pressure29.94 inHg
Wind7.2 mph W
Humidity66%
Visibility—
Dew point54°
Thu, 0571° / 60°0
71 °
Porphyry, Thursday, 5 November
Mostly clear. High 71°, low 60°.
Pressure29.91 inHg
Wind7.9 mph SW
Humidity55%
Visibility—
Dew point50°
Fri, 0667° / 57°0.25
67 °
Porphyry, Friday, 6 November
Rain. High 67°, low 57°.
Pressure29.77 inHg
Wind7.4 mph S
Humidity38%
Visibility—
Dew point35°
Sat, 0771° / 58°0
71 °
Porphyry, Saturday, 7 November
Clear. High 71°, low 58°.
Pressure30.00 inHg
Wind6.4 mph W
Humidity33%
Visibility—
Dew point35°
Sun, 0871° / 59°0
71 °
Porphyry, Sunday, 8 November
Overcast. High 71°, low 59°.
Pressure30.03 inHg
Wind5.6 mph W
Humidity51%
Visibility—
Dew point47°
Mon, 0971° / 59°0
71 °
Porphyry, Monday, 9 November
Overcast. High 71°, low 59°.
Pressure30.06 inHg
Wind6 mph W
Humidity61%
Visibility—
Dew point51°
Tue, 1071° / 60°0
71 °
Porphyry, Tuesday, 10 November
Overcast. High 71°, low 60°.
Pressure30.06 inHg
Wind9.2 mph SW
Humidity58%
Visibility—
Dew point51°
Wed, 1169° / 60°0.03
69 °
Porphyry, Wednesday, 11 November
Light rain. High 69°, low 60°.
Pressure30.03 inHg
Wind4.3 mph SW
Humidity77%
Visibility—
Dew point57°
Thu, 1265° / 57°0.02
65 °
Porphyry, Thursday, 12 November
Light rain. High 65°, low 57°.
Pressure29.94 inHg
Wind8.9 mph SW
Humidity58%
Visibility—
Dew point47°
Fri, 1366° / 54°0
66 °
Porphyry, Friday, 13 November
Partly cloudy. High 66°, low 54°.
Pressure29.94 inHg
Wind7.3 mph W
Humidity50%
Visibility—
Dew point41°
Sat, 1462° / 56°0
62 °
Porphyry, Saturday, 14 November
Overcast. High 62°, low 56°.
Pressure30.09 inHg
Wind4.3 mph W
Humidity52%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1571° / 48°0.06
71 °
Porphyry, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high71°
Average low48°
Average precipitation0.06 in
Chance of precipitation15%
Record high86° (2021)
Record low34° (1964)
Mon, 1671° / 48°0.05
71 °
Porphyry, Monday, 16 November
Climate normal for this date — 60-year average.
Average high71°
Average low48°
Average precipitation0.05 in
Chance of precipitation13%
Record high90° (2020)
Record low35° (1964)
Tue, 1770° / 49°0.04
70 °
Porphyry, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.04 in
Chance of precipitation15%
Record high90° (2019)
Record low36° (1971)
Wed, 1870° / 48°0.06
70 °
Porphyry, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.06 in
Chance of precipitation18%
Record high89° (2019)
Record low31° (1964)
Thu, 1971° / 47°0.06
71 °
Porphyry, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high71°
Average low47°
Average precipitation0.06 in
Chance of precipitation7%
Record high87° (2006)
Record low29° (1964)
Fri, 2070° / 47°0.07
70 °
Porphyry, Friday, 20 November
Climate normal for this date — 60-year average.
Average high70°
Average low47°
Average precipitation0.07 in
Chance of precipitation15%
Record high85° (2006)
Record low31° (1964)
Sat, 2168° / 47°0.11
68 °
Porphyry, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high68°
Average low47°
Average precipitation0.11 in
Chance of precipitation22%
Record high91° (2017)
Record low33° (1979)
Sun, 2268° / 47°0.06
68 °
Porphyry, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high68°
Average low47°
Average precipitation0.06 in
Chance of precipitation13%
Record high93° (2017)
Record low33° (1979)
Mon, 2369° / 46°0.02
69 °
Porphyry, Monday, 23 November
Climate normal for this date — 60-year average.
Average high69°
Average low46°
Average precipitation0.02 in
Chance of precipitation10%
Record high92° (2017)
Record low36° (2003)
Tue, 2469° / 46°0.03
69 °
Porphyry, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high69°
Average low46°
Average precipitation0.03 in
Chance of precipitation13%
Record high88° (2017)
Record low35° (1972)
Wed, 2569° / 46°0.07
69 °
Porphyry, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high69°
Average low46°
Average precipitation0.07 in
Chance of precipitation13%
Record high89° (1977)
Record low32° (1973)
Thu, 2668° / 46°0.09
68 °
Porphyry, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high68°
Average low46°
Average precipitation0.09 in
Chance of precipitation15%
Record high87° (1977)
Record low32° (2010)
Fri, 2767° / 45°0.05
67 °
Porphyry, Friday, 27 November
Climate normal for this date — 60-year average.
Average high67°
Average low45°
Average precipitation0.05 in
Chance of precipitation15%
Record high88° (2014)
Record low33° (1994)
Sat, 2867° / 44°0.11
67 °
Porphyry, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high67°
Average low44°
Average precipitation0.11 in
Chance of precipitation15%
Record high84° (1980)
Record low33° (1976)
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 Porphyry, 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 Porphyry, 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.