Monthly outlook for Jamacha, CA: average high 85°, average low 67.6°. That is 5.4° above the climate normal for October. Precipitation is expected on 3 days (about 0.8 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 7 October (98.2°), the coolest 13 October (59.5°).
85°/67.6°
Average high / low
+5.4°
Above normal
3 / 1
Wet days / normal
0.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
82.9°
75.9°
+3.9°
17 October – 26 October
88.4°
74.4°
+7.8°
27 October – 5 November
at normal
72.5°
—
October records over 66 years
100.8°24 October 2017All-time high
40.8°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Casa de Oro (4 mi).
Thu, 0896° / 67°0
96 °
Jamacha, Thursday, 8 October
Clear. High 96°, low 67°.
Pressure29.83 inHg
Wind6.2 mph W
Humidity30%
Visibility6.2 mi
Dew point58°
Fri, 0993° / 63°0
93 °
Jamacha, Friday, 9 October
Partly cloudy. High 93°, low 63°.
Pressure29.77 inHg
Wind4.5 mph W
Humidity29%
Visibility6.2 mi
Dew point54°
Sat, 1085° / 71°0.01
85 °
Jamacha, Saturday, 10 October
Light rain. High 85°, low 71°.
Pressure29.71 inHg
Wind4.3 mph NW
Humidity44%
Visibility6.2 mi
Dew point56°
Sun, 1177° / 66°0.47
77 °
Jamacha, Sunday, 11 October
Rain. High 77°, low 66°.
Pressure29.59 inHg
Wind9.3 mph SW
Humidity68%
Visibility6.2 mi
Dew point63°
Mon, 1271° / 62°0.17
71 °
Jamacha, Monday, 12 October
Light rain. High 71°, low 62°.
Pressure29.85 inHg
Wind6.4 mph SW
Humidity78%
Visibility—
Dew point60°
Tue, 1372° / 60°0.07
72 °
Jamacha, Tuesday, 13 October
Light rain. High 72°, low 60°.
Pressure29.88 inHg
Wind9.7 mph NW
Humidity55%
Visibility—
Dew point51°
Wed, 1470° / 65°0.02
70 °
Jamacha, Wednesday, 14 October
Light rain. High 70°, low 65°.
Pressure29.91 inHg
Wind11.5 mph SW
Humidity47%
Visibility—
Dew point48°
Thu, 1578° / 66°0.01
78 °
Jamacha, Thursday, 15 October
Light rain. High 78°, low 66°.
Pressure30.00 inHg
Wind10.5 mph W
Humidity54%
Visibility—
Dew point53°
Fri, 1688° / 68°0
88 °
Jamacha, Friday, 16 October
Clear. High 88°, low 68°.
Pressure30.09 inHg
Wind5.2 mph E
Humidity12%
Visibility—
Dew point23°
Sat, 1790° / 68°0
90 °
Jamacha, Saturday, 17 October
Clear. High 90°, low 68°.
Pressure29.94 inHg
Wind6.6 mph SW
Humidity5%
Visibility—
Dew point4°
Sun, 1892° / 71°0
92 °
Jamacha, Sunday, 18 October
Clear. High 92°, low 71°.
Pressure29.88 inHg
Wind9 mph W
Humidity7%
Visibility—
Dew point13°
Mon, 1990° / 73°0
90 °
Jamacha, Monday, 19 October
Overcast. High 90°, low 73°.
Pressure29.91 inHg
Wind8.1 mph W
Humidity9%
Visibility—
Dew point19°
Tue, 2090° / 72°0
90 °
Jamacha, Tuesday, 20 October
Clear. High 90°, low 72°.
Pressure29.88 inHg
Wind8.6 mph W
Humidity11%
Visibility—
Dew point23°
Wed, 2188° / 72°0
88 °
Jamacha, Wednesday, 21 October
Clear. High 88°, low 72°.
Pressure29.91 inHg
Wind9.5 mph W
Humidity15%
Visibility—
Dew point31°
Thu, 2281° / 68°0
81 °
Jamacha, Thursday, 22 October
Clear. High 81°, low 68°.
Pressure29.85 inHg
Wind9.8 mph W
Humidity29%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2375° / 57°0.02
75 °
Jamacha, Friday, 23 October
Climate normal for this date — 60-year average.
Average high75°
Average low57°
Average precipitation0.02 in
Chance of precipitation8%
Record high100° (2017)
Record low51° (1984)
Sat, 2475° / 58°0.01
75 °
Jamacha, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high75°
Average low58°
Average precipitation0.01 in
Chance of precipitation8%
Record high101° (2017)
Record low49° (1961)
Sun, 2574° / 57°0.01
74 °
Jamacha, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.01 in
Chance of precipitation8%
Record high98° (2017)
Record low45° (1971)
Mon, 2674° / 57°0.02
74 °
Jamacha, Monday, 26 October
Climate normal for this date — 60-year average.
Average high74°
Average low57°
Average precipitation0.02 in
Chance of precipitation13%
Record high90° (2017)
Record low47° (1971)
Tue, 2773° / 56°0.04
73 °
Jamacha, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.04 in
Chance of precipitation12%
Record high88° (2003)
Record low47° (1996)
Wed, 2873° / 56°0.02
73 °
Jamacha, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high73°
Average low56°
Average precipitation0.02 in
Chance of precipitation10%
Record high89° (2021)
Record low47° (1989)
Thu, 2972° / 55°0.03
72 °
Jamacha, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.03 in
Chance of precipitation12%
Record high94° (2025)
Record low41° (1971)
Fri, 3072° / 55°0.02
72 °
Jamacha, Friday, 30 October
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.02 in
Chance of precipitation17%
Record high91° (2025)
Record low41° (1971)
Sat, 3172° / 55°0.03
72 °
Jamacha, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high72°
Average low55°
Average precipitation0.03 in
Chance of precipitation12%
Record high85° (1962)
Record low42° (1972)
Sun, 0173° / 54°0.02
73 °
Jamacha, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high73°
Average low54°
Average precipitation0.02 in
Chance of precipitation12%
Record high90° (1966)
Record low46° (1972)
Mon, 0273° / 54°0.01
73 °
Jamacha, Monday, 2 November
Climate normal for this date — 60-year average.
Average high73°
Average low54°
Average precipitation0.01 in
Chance of precipitation7%
Record high89° (1997)
Record low46° (1971)
Tue, 0373° / 54°0.02
73 °
Jamacha, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high73°
Average low54°
Average precipitation0.02 in
Chance of precipitation3%
Record high87° (2010)
Record low46° (1990)
Wed, 0472° / 54°0.02
72 °
Jamacha, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high72°
Average low54°
Average precipitation0.02 in
Chance of precipitation8%
Record high91° (2010)
Record low43° (1994)
Thu, 0571° / 54°0.01
71 °
Jamacha, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high71°
Average low54°
Average precipitation0.01 in
Chance of precipitation8%
Record high94° (2020)
Record low46° (2003)
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 Jamacha, 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 Jamacha, 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.