Monthly outlook for Foster City, MI: average high 53.8°, average low 38.3°. That is 3.2° above the climate normal for October. Precipitation is expected on 5 days (about 0.9 inches), against a normal of 5 days and 1.4 inches. The warmest day looks like 24 October (65.4°), the coolest 4 November (27.9°).
53.8°/38.3°
Average high / low
+3.2°
Above normal
5 / 5
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
21 October – 30 October
56.8°
49.5°
+4.1°
31 October – 9 November
48.8°
44.7°
+2.3°
10 November – 19 November
at normal
39°
—
October records over 66 years
82.6°2 October 2023All-time high
16.5°24 October 2002All-time low
Climate normals and records are computed from the nearest reference point — Northland (10 mi).
Thu, 2265° / 36°0
65 °
Foster City, Thursday, 22 October
Clear. High 65°, low 36°.
Pressure30.30 inHg
Wind2.5 mph SE
Humidity66%
Visibility6.2 mi
Dew point48°
Fri, 2365° / 42°0
65 °
Foster City, Friday, 23 October
Light rain. High 65°, low 42°.
Pressure30.30 inHg
Wind5.2 mph S
Humidity78%
Visibility6.2 mi
Dew point53°
Sat, 2465° / 50°0
65 °
Foster City, Saturday, 24 October
Overcast. High 65°, low 50°.
Pressure30.27 inHg
Wind10.6 mph S
Humidity65%
Visibility6.2 mi
Dew point49°
Sun, 2561° / 51°0.03
61 °
Foster City, Sunday, 25 October
Light rain. High 61°, low 51°.
Pressure30.39 inHg
Wind3.8 mph NW
Humidity66%
Visibility6.2 mi
Dew point44°
Mon, 2650° / 41°0.06
50 °
Foster City, Monday, 26 October
Light rain. High 50°, low 41°.
Pressure30.50 inHg
Wind6.7 mph NE
Humidity63%
Visibility—
Dew point37°
Tue, 2743° / 39°0.15
43 °
Foster City, Tuesday, 27 October
Light rain. High 43°, low 39°.
Pressure30.33 inHg
Wind5.6 mph NE
Humidity85%
Visibility—
Dew point38°
Wed, 2848° / 31°0
48 °
Foster City, Wednesday, 28 October
Partly cloudy. High 48°, low 31°.
Pressure30.21 inHg
Wind10.2 mph NW
Humidity35%
Visibility—
Dew point19°
Thu, 2952° / 32°0
52 °
Foster City, Thursday, 29 October
Overcast. High 52°, low 32°.
Pressure30.21 inHg
Wind7.4 mph SW
Humidity39%
Visibility—
Dew point24°
Fri, 3055° / 37°0
55 °
Foster City, Friday, 30 October
Overcast. High 55°, low 37°.
Pressure29.97 inHg
Wind14.2 mph S
Humidity45%
Visibility—
Dew point31°
Sat, 3155° / 47°0.37
55 °
Foster City, Saturday, 31 October
Rain. High 55°, low 47°.
Pressure29.88 inHg
Wind16.4 mph S
Humidity55%
Visibility—
Dew point38°
Sun, 0153° / 48°0.19
53 °
Foster City, Sunday, 1 November
Light rain. High 53°, low 48°.
Pressure29.74 inHg
Wind13.3 mph S
Humidity94%
Visibility—
Dew point51°
Mon, 0246° / 33°0.01
46 °
Foster City, Monday, 2 November
Light snow. High 46°, low 33°.
Pressure30.00 inHg
Wind14.5 mph NW
Humidity53%
Visibility—
Dew point26°
Tue, 0340° / 29°0
40 °
Foster City, Tuesday, 3 November
Partly cloudy. High 40°, low 29°.
Pressure30.03 inHg
Wind14.4 mph NW
Humidity45%
Visibility—
Dew point19°
Wed, 0448° / 28°0
48 °
Foster City, Wednesday, 4 November
Light snow. High 48°, low 28°.
Pressure29.68 inHg
Wind13 mph SW
Humidity48%
Visibility—
Dew point20°
Thu, 0551° / 29°0.06
51 °
Foster City, Thursday, 5 November
Snow. High 51°, low 29°.
Pressure29.44 inHg
Wind17.1 mph NW
Humidity68%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 0644° / 32°0.08
44 °
Foster City, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low32°
Average precipitation0.08 in
Chance of precipitation25%
Record high71° (2020)
Record low10° (1991)
Sat, 0743° / 30°0.03
43 °
Foster City, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.03 in
Chance of precipitation22%
Record high68° (2020)
Record low6° (1991)
Sun, 0843° / 31°0.05
43 °
Foster City, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.05 in
Chance of precipitation20%
Record high67° (2020)
Record low8° (1991)
Mon, 0943° / 30°0.08
43 °
Foster City, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.08 in
Chance of precipitation38%
Record high70° (2020)
Record low11° (2003)
Tue, 1041° / 30°0.15
41 °
Foster City, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high41°
Average low30°
Average precipitation0.15 in
Chance of precipitation37%
Record high66° (2020)
Record low10° (2017)
Wed, 1139° / 28°0.07
39 °
Foster City, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low28°
Average precipitation0.07 in
Chance of precipitation33%
Record high61° (1964)
Record low10° (1986)
Thu, 1238° / 26°0.09
38 °
Foster City, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.09 in
Chance of precipitation33%
Record high54° (1964)
Record low7° (1986)
Fri, 1338° / 26°0.06
38 °
Foster City, Friday, 13 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.06 in
Chance of precipitation28%
Record high62° (1999)
Record low4° (1986)
Sat, 1439° / 27°0.02
39 °
Foster City, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.02 in
Chance of precipitation18%
Record high60° (2001)
Record low8° (2018)
Sun, 1540° / 28°0.04
40 °
Foster City, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.04 in
Chance of precipitation27%
Record high63° (2001)
Record low6° (2014)
Mon, 1639° / 27°0.06
39 °
Foster City, Monday, 16 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.06 in
Chance of precipitation20%
Record high59° (2023)
Record low12° (2014)
Tue, 1739° / 27°0.07
39 °
Foster City, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.07 in
Chance of precipitation27%
Record high58° (2001)
Record low5° (2014)
Wed, 1839° / 27°0.06
39 °
Foster City, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high39°
Average low27°
Average precipitation0.06 in
Chance of precipitation30%
Record high59° (2001)
Record low7° (2014)
Thu, 1938° / 26°0.06
38 °
Foster City, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high38°
Average low26°
Average precipitation0.06 in
Chance of precipitation42%
Record high56° (1999)
Record low-1° (2014)
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 Foster City, MI 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 Foster City, MI 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.