Monthly outlook for Blue Jay, CA: average high 66.1°, average low 49.7°. That is 6.9° below the climate normal for October. Precipitation is expected on 2 days (about 1.7 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 17 October (76.4°), the coolest 13 October (35.6°).
66.1°/49.7°
Average high / low
−6.9°
Below normal
2 / 1
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
65.5°
79.4°
-7.7°
21 October – 30 October
67.2°
76°
-4.9°
31 October – 9 November
at normal
73.1°
—
October records over 66 years
105.6°2 October 2024All-time high
30.6°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — San Bernardino (9 mi).
Mon, 1246° / 36°0.61
46 °
Blue Jay, Monday, 12 October
Rain. High 46°, low 36°.
Pressure29.88 inHg
Wind12.1 mph S
Humidity90%
Visibility1.4 mi
Dew point46°
Tue, 1358° / 36°0
58 °
Blue Jay, Tuesday, 13 October
Clear. High 58°, low 36°.
Pressure30.00 inHg
Wind11.4 mph N
Humidity41%
Visibility6.2 mi
Dew point33°
Wed, 1465° / 46°0
65 °
Blue Jay, Wednesday, 14 October
Clear. High 65°, low 46°.
Pressure30.09 inHg
Wind11.3 mph N
Humidity32%
Visibility6.2 mi
Dew point32°
Thu, 1568° / 53°0
68 °
Blue Jay, Thursday, 15 October
Clear. High 68°, low 53°.
Pressure30.09 inHg
Wind15.8 mph N
Humidity31%
Visibility6.2 mi
Dew point34°
Fri, 1670° / 55°0
70 °
Blue Jay, Friday, 16 October
Clear. High 70°, low 55°.
Pressure30.09 inHg
Wind14.9 mph N
Humidity38%
Visibility—
Dew point38°
Sat, 1776° / 55°0
76 °
Blue Jay, Saturday, 17 October
Clear. High 76°, low 55°.
Pressure30.03 inHg
Wind6.1 mph N
Humidity30%
Visibility—
Dew point38°
Sun, 1875° / 56°0
75 °
Blue Jay, Sunday, 18 October
Clear. High 75°, low 56°.
Pressure30.03 inHg
Wind5.5 mph NE
Humidity25%
Visibility—
Dew point32°
Mon, 1974° / 57°0
74 °
Blue Jay, Monday, 19 October
Clear. High 74°, low 57°.
Pressure30.03 inHg
Wind9.5 mph SW
Humidity24%
Visibility—
Dew point31°
Tue, 2069° / 54°0
69 °
Blue Jay, Tuesday, 20 October
Clear. High 69°, low 54°.
Pressure29.91 inHg
Wind8.9 mph S
Humidity22%
Visibility—
Dew point25°
Wed, 2170° / 52°0
70 °
Blue Jay, Wednesday, 21 October
Clear. High 70°, low 52°.
Pressure29.88 inHg
Wind10.4 mph SW
Humidity19%
Visibility—
Dew point22°
Thu, 2271° / 51°0
71 °
Blue Jay, Thursday, 22 October
Clear. High 71°, low 51°.
Pressure29.88 inHg
Wind7.9 mph N
Humidity15%
Visibility—
Dew point17°
Fri, 2364° / 52°0
64 °
Blue Jay, Friday, 23 October
Clear. High 64°, low 52°.
Pressure30.03 inHg
Wind20.2 mph NE
Humidity16%
Visibility—
Dew point14°
Sat, 2461° / 49°0
61 °
Blue Jay, Saturday, 24 October
Clear. High 61°, low 49°.
Pressure30.15 inHg
Wind25.3 mph NE
Humidity20%
Visibility—
Dew point16°
Sun, 2566° / 49°0
66 °
Blue Jay, Sunday, 25 October
Clear. High 66°, low 49°.
Pressure30.09 inHg
Wind23 mph NE
Humidity9%
Visibility—
Dew point2°
Mon, 2671° / 51°0
71 °
Blue Jay, Monday, 26 October
Clear. High 71°, low 51°.
Pressure30.09 inHg
Wind17 mph NE
Humidity11%
Visibility—
Dew point9°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2776° / 52°0.04
76 °
Blue Jay, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.04 in
Chance of precipitation7%
Record high94° (2017)
Record low40° (1996)
Wed, 2875° / 51°0.02
75 °
Blue Jay, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high75°
Average low51°
Average precipitation0.02 in
Chance of precipitation8%
Record high94° (2017)
Record low38° (1970)
Thu, 2973° / 51°0.01
73 °
Blue Jay, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.01 in
Chance of precipitation8%
Record high91° (2025)
Record low33° (1971)
Fri, 3073° / 50°0.03
73 °
Blue Jay, Friday, 30 October
Climate normal for this date — 60-year average.
Average high73°
Average low50°
Average precipitation0.03 in
Chance of precipitation12%
Record high91° (2025)
Record low31° (1971)
Sat, 3174° / 50°0.02
74 °
Blue Jay, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high74°
Average low50°
Average precipitation0.02 in
Chance of precipitation5%
Record high89° (1988)
Record low35° (1972)
Sun, 0174° / 49°0.02
74 °
Blue Jay, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high74°
Average low49°
Average precipitation0.02 in
Chance of precipitation10%
Record high89° (2020)
Record low35° (1971)
Mon, 0274° / 49°0.02
74 °
Blue Jay, Monday, 2 November
Climate normal for this date — 60-year average.
Average high74°
Average low49°
Average precipitation0.02 in
Chance of precipitation8%
Record high89° (2009)
Record low37° (1971)
Tue, 0375° / 48°0.01
75 °
Blue Jay, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high75°
Average low48°
Average precipitation0.01 in
Chance of precipitation8%
Record high92° (2010)
Record low37° (1990)
Wed, 0475° / 49°0.02
75 °
Blue Jay, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0.02 in
Chance of precipitation7%
Record high92° (2020)
Record low34° (1994)
Thu, 0574° / 50°0.01
74 °
Blue Jay, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high74°
Average low50°
Average precipitation0.01 in
Chance of precipitation5%
Record high91° (2020)
Record low37° (2015)
Fri, 0672° / 49°0.01
72 °
Blue Jay, Friday, 6 November
Climate normal for this date — 60-year average.
Average high72°
Average low49°
Average precipitation0.01 in
Chance of precipitation5%
Record high88° (1991)
Record low40° (2015)
Sat, 0771° / 49°0.05
71 °
Blue Jay, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.05 in
Chance of precipitation7%
Record high90° (2006)
Record low35° (2011)
Sun, 0871° / 49°0.06
71 °
Blue Jay, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.06 in
Chance of precipitation17%
Record high89° (2016)
Record low35° (2011)
Mon, 0970° / 48°0.04
70 °
Blue Jay, Monday, 9 November
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.04 in
Chance of precipitation12%
Record high89° (2025)
Record low35° (2020)
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 Blue Jay, 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 Blue Jay, 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.