Monthly outlook for Mather, CA: average high 78.5°, average low 57.2°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 8 October (99.2°), the coolest 12 October (52.3°).
78.5°/57.2°
Average high / low
+0.7°
Above normal
1 / 2
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
78°
78.4°
-0.2°
18 October – 27 October
79.3°
74.4°
+2.7°
28 October – 6 November
at normal
69.3°
—
October records over 66 years
103.6°2 October 2024All-time high
37.9°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Rosemont (4 mi).
Fri, 0995° / 65°0
95 °
Mather, Friday, 9 October
Clear. High 95°, low 65°.
Pressure29.71 inHg
Wind2.8 mph S
Humidity27%
Visibility6.2 mi
Dew point49°
Sat, 1076° / 59°0
76 °
Mather, Saturday, 10 October
Clear. High 76°, low 59°.
Pressure29.59 inHg
Wind7.5 mph S
Humidity47%
Visibility6.2 mi
Dew point52°
Sun, 1166° / 53°0
66 °
Mather, Sunday, 11 October
Overcast. High 66°, low 53°.
Pressure29.59 inHg
Wind7 mph S
Humidity59%
Visibility6.2 mi
Dew point46°
Mon, 1268° / 52°0.08
68 °
Mather, Monday, 12 October
Light rain. High 68°, low 52°.
Pressure29.83 inHg
Wind4.9 mph SE
Humidity48%
Visibility6.2 mi
Dew point44°
Tue, 1374° / 56°0
74 °
Mather, Tuesday, 13 October
Clear. High 74°, low 56°.
Pressure30.06 inHg
Wind6.4 mph SW
Humidity48%
Visibility—
Dew point44°
Wed, 1475° / 53°0
75 °
Mather, Wednesday, 14 October
Clear. High 75°, low 53°.
Pressure30.09 inHg
Wind5.4 mph NW
Humidity43%
Visibility—
Dew point42°
Thu, 1577° / 54°0
77 °
Mather, Thursday, 15 October
Clear. High 77°, low 54°.
Pressure29.97 inHg
Wind18.7 mph NE
Humidity27%
Visibility—
Dew point27°
Fri, 1677° / 59°0
77 °
Mather, Friday, 16 October
Partly cloudy. High 77°, low 59°.
Pressure29.83 inHg
Wind15.1 mph N
Humidity18%
Visibility—
Dew point24°
Sat, 1773° / 53°0
73 °
Mather, Saturday, 17 October
Overcast. High 73°, low 53°.
Pressure30.00 inHg
Wind9.2 mph S
Humidity41%
Visibility—
Dew point40°
Sun, 1875° / 56°0
75 °
Mather, Sunday, 18 October
Partly cloudy. High 75°, low 56°.
Pressure30.12 inHg
Wind5.9 mph NW
Humidity38%
Visibility—
Dew point39°
Mon, 1978° / 56°0
78 °
Mather, Monday, 19 October
Clear. High 78°, low 56°.
Pressure30.09 inHg
Wind4.3 mph NW
Humidity28%
Visibility—
Dew point33°
Tue, 2080° / 58°0
80 °
Mather, Tuesday, 20 October
Mostly clear. High 80°, low 58°.
Pressure30.03 inHg
Wind3.7 mph NW
Humidity25%
Visibility—
Dew point33°
Wed, 2180° / 61°0
80 °
Mather, Wednesday, 21 October
Overcast. High 80°, low 61°.
Pressure30.00 inHg
Wind4.5 mph N
Humidity23%
Visibility—
Dew point31°
Thu, 2281° / 62°0
81 °
Mather, Thursday, 22 October
Overcast. High 81°, low 62°.
Pressure29.97 inHg
Wind8.1 mph NW
Humidity24%
Visibility—
Dew point31°
Fri, 2380° / 59°0
80 °
Mather, Friday, 23 October
Clear. High 80°, low 59°.
Pressure29.97 inHg
Wind5.5 mph S
Humidity29%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2474° / 52°0.15
74 °
Mather, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high74°
Average low52°
Average precipitation0.15 in
Chance of precipitation15%
Record high87° (2019)
Record low43° (1971)
Sun, 2573° / 52°0.1
73 °
Mather, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high73°
Average low52°
Average precipitation0.1 in
Chance of precipitation17%
Record high87° (2003)
Record low44° (1971)
Mon, 2673° / 51°0.11
73 °
Mather, Monday, 26 October
Climate normal for this date — 60-year average.
Average high73°
Average low51°
Average precipitation0.11 in
Chance of precipitation12%
Record high87° (2003)
Record low42° (1989)
Tue, 2772° / 50°0.02
72 °
Mather, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high72°
Average low50°
Average precipitation0.02 in
Chance of precipitation12%
Record high85° (2003)
Record low38° (2023)
Wed, 2870° / 50°0.09
70 °
Mather, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high70°
Average low50°
Average precipitation0.09 in
Chance of precipitation15%
Record high84° (2003)
Record low39° (2023)
Thu, 2970° / 49°0.07
70 °
Mather, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.07 in
Chance of precipitation15%
Record high80° (1965)
Record low40° (1971)
Fri, 3069° / 49°0.1
69 °
Mather, Friday, 30 October
Climate normal for this date — 60-year average.
Average high69°
Average low49°
Average precipitation0.1 in
Chance of precipitation23%
Record high83° (2015)
Record low39° (1971)
Sat, 3170° / 48°0.04
70 °
Mather, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.04 in
Chance of precipitation17%
Record high83° (2015)
Record low38° (2019)
Sun, 0170° / 48°0.04
70 °
Mather, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.04 in
Chance of precipitation17%
Record high83° (2018)
Record low37° (2023)
Mon, 0270° / 48°0.08
70 °
Mather, Monday, 2 November
Climate normal for this date — 60-year average.
Average high70°
Average low48°
Average precipitation0.08 in
Chance of precipitation13%
Record high83° (1967)
Record low40° (2003)
Tue, 0369° / 48°0.07
69 °
Mather, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.07 in
Chance of precipitation18%
Record high85° (2018)
Record low38° (2019)
Wed, 0469° / 48°0.05
69 °
Mather, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.05 in
Chance of precipitation13%
Record high81° (1976)
Record low38° (1973)
Thu, 0568° / 48°0.08
68 °
Mather, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high68°
Average low48°
Average precipitation0.08 in
Chance of precipitation13%
Record high81° (1976)
Record low38° (2011)
Fri, 0667° / 49°0.08
67 °
Mather, Friday, 6 November
Climate normal for this date — 60-year average.
Average high67°
Average low49°
Average precipitation0.08 in
Chance of precipitation17%
Record high79° (1976)
Record low41° (1996)
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 Mather, 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 Mather, 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.