Monthly outlook for Crestline, CA: average high 73.4°, average low 56.5°. That is 3° below the climate normal for October. Precipitation is expected on 3 days (about 1.8 inches), against a normal of 1 days and 0.3 inches. The warmest day looks like 22 October (82.6°), the coolest 12 October (42.9°).
73.4°/56.5°
Average high / low
−3°
Below normal
3 / 1
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
70.7°
79.6°
-4.9°
20 October – 29 October
77.8°
76.5°
+0.7°
30 October – 8 November
at normal
73.3°
—
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 (7 mi).
Sun, 1156° / 46°1.13
56 °
Crestline, Sunday, 11 October
Heavy rain. High 56°, low 46°.
Pressure29.68 inHg
Wind14.9 mph S
Humidity93%
Visibility2.9 mi
Dew point54°
Mon, 1256° / 43°0.6
56 °
Crestline, Monday, 12 October
Rain. High 56°, low 43°.
Pressure29.88 inHg
Wind12.1 mph S
Humidity90%
Visibility2.6 mi
Dew point47°
Tue, 1364° / 47°0
64 °
Crestline, Tuesday, 13 October
Mostly clear. High 64°, low 47°.
Pressure30.00 inHg
Wind6.8 mph NW
Humidity42%
Visibility6.2 mi
Dew point36°
Wed, 1470° / 53°0
70 °
Crestline, Wednesday, 14 October
Clear. High 70°, low 53°.
Pressure30.06 inHg
Wind10.8 mph N
Humidity43%
Visibility6.2 mi
Dew point42°
Thu, 1574° / 58°0
74 °
Crestline, Thursday, 15 October
Clear. High 74°, low 58°.
Pressure30.12 inHg
Wind14.8 mph N
Humidity38%
Visibility—
Dew point42°
Fri, 1678° / 59°0
78 °
Crestline, Friday, 16 October
Clear. High 78°, low 59°.
Pressure30.09 inHg
Wind18.5 mph NE
Humidity24%
Visibility—
Dew point33°
Sat, 1782° / 59°0
82 °
Crestline, Saturday, 17 October
Clear. High 82°, low 59°.
Pressure30.06 inHg
Wind9.6 mph N
Humidity17%
Visibility—
Dew point26°
Sun, 1881° / 61°0
81 °
Crestline, Sunday, 18 October
Clear. High 81°, low 61°.
Pressure30.09 inHg
Wind5.7 mph N
Humidity19%
Visibility—
Dew point30°
Mon, 1979° / 61°0
79 °
Crestline, Monday, 19 October
Clear. High 79°, low 61°.
Pressure30.15 inHg
Wind9.4 mph S
Humidity21%
Visibility—
Dew point32°
Tue, 2077° / 60°0
77 °
Crestline, Tuesday, 20 October
Clear. High 77°, low 60°.
Pressure30.06 inHg
Wind9.1 mph S
Humidity21%
Visibility—
Dew point30°
Wed, 2179° / 57°0
79 °
Crestline, Wednesday, 21 October
Clear. High 79°, low 57°.
Pressure29.97 inHg
Wind5.4 mph SW
Humidity17%
Visibility—
Dew point26°
Thu, 2283° / 62°0
83 °
Crestline, Thursday, 22 October
Clear. High 83°, low 62°.
Pressure30.09 inHg
Wind6 mph N
Humidity16%
Visibility—
Dew point26°
Fri, 2383° / 62°0
83 °
Crestline, Friday, 23 October
Clear. High 83°, low 62°.
Pressure30.09 inHg
Wind8.5 mph S
Humidity14%
Visibility—
Dew point24°
Sat, 2480° / 64°0
80 °
Crestline, Saturday, 24 October
Overcast. High 80°, low 64°.
Pressure29.94 inHg
Wind11.1 mph SW
Humidity17%
Visibility—
Dew point28°
Sun, 2567° / 55°0.07
67 °
Crestline, Sunday, 25 October
Light rain. High 67°, low 55°.
Pressure30.03 inHg
Wind7.3 mph N
Humidity37%
Visibility—
Dew point38°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2676° / 52°0.01
76 °
Crestline, Monday, 26 October
Climate normal for this date — 60-year average.
Average high76°
Average low52°
Average precipitation0.01 in
Chance of precipitation10%
Record high93° (2018)
Record low41° (1970)
Tue, 2776° / 52°0.04
76 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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 °
Crestline, 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)
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 Crestline, 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 Crestline, 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.