Monthly outlook for Irwin, CA: average high 74.4°, average low 51.7°. That is 0° below the climate normal for October. Precipitation is expected on 2 days (about 0.4 inches), against a normal of 2 days and 0.6 inches. The warmest day looks like 17 October (92.3°), the coolest 31 October (46°).
74.4°/51.7°
Average high / low
−0°
Below normal
2 / 2
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
76°
76.2°
-0.1°
27 October – 5 November
71.5°
71.1°
+0.2°
6 November – 15 November
at normal
66.5°
—
October records over 66 years
106.5°2 October 2024All-time high
36.1°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Turlock (8 mi).
Sun, 1883° / 52°0
83 °
Irwin, Sunday, 18 October
Clear. High 83°, low 52°.
Pressure29.94 inHg
Wind1.4 mph NW
Humidity18%
Visibility6.2 mi
Dew point36°
Mon, 1973° / 53°0
73 °
Irwin, Monday, 19 October
Mostly clear. High 73°, low 53°.
Pressure29.94 inHg
Wind1.6 mph N
Humidity45%
Visibility6.2 mi
Dew point45°
Tue, 2068° / 52°0.11
68 °
Irwin, Tuesday, 20 October
Light rain. High 68°, low 52°.
Pressure29.91 inHg
Wind2.7 mph W
Humidity58%
Visibility6.2 mi
Dew point47°
Wed, 2170° / 55°0.01
70 °
Irwin, Wednesday, 21 October
Light rain. High 70°, low 55°.
Pressure29.88 inHg
Wind11 mph NW
Humidity53%
Visibility—
Dew point46°
Thu, 2274° / 53°0
74 °
Irwin, Thursday, 22 October
Clear. High 74°, low 53°.
Pressure29.94 inHg
Wind7.5 mph NW
Humidity53%
Visibility—
Dew point49°
Fri, 2373° / 51°0
73 °
Irwin, Friday, 23 October
Clear. High 73°, low 51°.
Pressure30.12 inHg
Wind11.1 mph NW
Humidity57%
Visibility—
Dew point47°
Sat, 2474° / 51°0
74 °
Irwin, Saturday, 24 October
Clear. High 74°, low 51°.
Pressure30.12 inHg
Wind9.4 mph NW
Humidity37%
Visibility—
Dew point37°
Sun, 2575° / 50°0
75 °
Irwin, Sunday, 25 October
Overcast. High 75°, low 50°.
Pressure30.12 inHg
Wind8.3 mph N
Humidity20%
Visibility—
Dew point23°
Mon, 2677° / 52°0
77 °
Irwin, Monday, 26 October
Overcast. High 77°, low 52°.
Pressure29.88 inHg
Wind13.1 mph NW
Humidity23%
Visibility—
Dew point28°
Tue, 2779° / 55°0
79 °
Irwin, Tuesday, 27 October
Mostly clear. High 79°, low 55°.
Pressure29.83 inHg
Wind10.6 mph NW
Humidity25%
Visibility—
Dew point31°
Wed, 2883° / 54°0
83 °
Irwin, Wednesday, 28 October
Overcast. High 83°, low 54°.
Pressure30.00 inHg
Wind12.6 mph SW
Humidity18%
Visibility—
Dew point25°
Thu, 2959° / 49°0.29
59 °
Irwin, Thursday, 29 October
Rain. High 59°, low 49°.
Pressure30.00 inHg
Wind13 mph N
Humidity85%
Visibility—
Dew point47°
Fri, 3067° / 49°0
67 °
Irwin, Friday, 30 October
Clear. High 67°, low 49°.
Pressure29.94 inHg
Wind19.4 mph NW
Humidity32%
Visibility—
Dew point28°
Sat, 3167° / 46°0
67 °
Irwin, Saturday, 31 October
Clear. High 67°, low 46°.
Pressure30.09 inHg
Wind3.7 mph N
Humidity40%
Visibility—
Dew point33°
Sun, 0174° / 51°0
74 °
Irwin, Sunday, 1 November
Clear. High 74°, low 51°.
Pressure30.15 inHg
Wind5.3 mph SE
Humidity32%
Visibility—
Dew point33°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 0271° / 50°0.04
71 °
Irwin, Monday, 2 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.04 in
Chance of precipitation13%
Record high83° (2020)
Record low37° (2019)
Tue, 0371° / 50°0.03
71 °
Irwin, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.03 in
Chance of precipitation10%
Record high82° (2020)
Record low38° (2019)
Wed, 0471° / 49°0.03
71 °
Irwin, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.03 in
Chance of precipitation10%
Record high82° (1976)
Record low37° (1973)
Thu, 0570° / 49°0.04
70 °
Irwin, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high70°
Average low49°
Average precipitation0.04 in
Chance of precipitation12%
Record high86° (2010)
Record low39° (2003)
Fri, 0669° / 50°0.03
69 °
Irwin, Friday, 6 November
Climate normal for this date — 60-year average.
Average high69°
Average low50°
Average precipitation0.03 in
Chance of precipitation15%
Record high82° (1976)
Record low42° (1998)
Sat, 0768° / 49°0.06
68 °
Irwin, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high68°
Average low49°
Average precipitation0.06 in
Chance of precipitation22%
Record high80° (2006)
Record low41° (2017)
Sun, 0867° / 49°0.06
67 °
Irwin, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high67°
Average low49°
Average precipitation0.06 in
Chance of precipitation18%
Record high78° (2019)
Record low41° (1972)
Mon, 0967° / 47°0.07
67 °
Irwin, Monday, 9 November
Climate normal for this date — 60-year average.
Average high67°
Average low47°
Average precipitation0.07 in
Chance of precipitation20%
Record high79° (1976)
Record low34° (2020)
Tue, 1066° / 47°0.06
66 °
Irwin, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.06 in
Chance of precipitation23%
Record high78° (2016)
Record low34° (2020)
Wed, 1166° / 47°0.08
66 °
Irwin, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.08 in
Chance of precipitation25%
Record high83° (2016)
Record low35° (2000)
Thu, 1266° / 47°0.06
66 °
Irwin, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high66°
Average low47°
Average precipitation0.06 in
Chance of precipitation17%
Record high79° (1990)
Record low33° (2018)
Fri, 1365° / 47°0.12
65 °
Irwin, Friday, 13 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.12 in
Chance of precipitation25%
Record high78° (1990)
Record low34° (1985)
Sat, 1465° / 47°0.07
65 °
Irwin, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.07 in
Chance of precipitation17%
Record high77° (1995)
Record low34° (2000)
Sun, 1565° / 46°0.04
65 °
Irwin, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high65°
Average low46°
Average precipitation0.04 in
Chance of precipitation15%
Record high77° (2008)
Record low33° (2000)
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 Irwin, 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 Irwin, 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.