Monthly outlook for Irwin, CA: average high 78.9°, average low 51.4°. That is 1.4° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.5 inches. The warmest day looks like 17 October (94.2°), the coolest 20 October (46.1°).
78.9°/51.4°
Average high / low
+1.4°
Above normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
80.8°
77.9°
+1.6°
23 October – 1 November
75.8°
72.8°
+1.7°
2 November – 11 November
at normal
68.6°
—
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).
Wed, 1479° / 50°0
79 °
Irwin, Wednesday, 14 October
Clear. High 79°, low 50°.
Pressure30.12 inHg
Wind1 mph SE
Humidity19%
Visibility6.2 mi
Dew point28°
Thu, 1587° / 52°0
87 °
Irwin, Thursday, 15 October
Clear. High 87°, low 52°.
Pressure30.09 inHg
Wind1.3 mph NW
Humidity18%
Visibility6.2 mi
Dew point32°
Fri, 1691° / 59°0
91 °
Irwin, Friday, 16 October
Clear. High 91°, low 59°.
Pressure30.06 inHg
Wind1.7 mph S
Humidity18%
Visibility6.2 mi
Dew point33°
Sat, 1794° / 61°0
94 °
Irwin, Saturday, 17 October
Clear. High 94°, low 61°.
Pressure30.00 inHg
Wind8 mph NW
Humidity16%
Visibility—
Dew point29°
Sun, 1887° / 55°0
87 °
Irwin, Sunday, 18 October
Clear. High 87°, low 55°.
Pressure29.97 inHg
Wind13 mph N
Humidity32%
Visibility—
Dew point43°
Mon, 1974° / 50°0.01
74 °
Irwin, Monday, 19 October
Light rain. High 74°, low 50°.
Pressure30.03 inHg
Wind11.9 mph NW
Humidity35%
Visibility—
Dew point36°
Tue, 2070° / 46°0
70 °
Irwin, Tuesday, 20 October
Clear. High 70°, low 46°.
Pressure30.00 inHg
Wind21.3 mph NW
Humidity41%
Visibility—
Dew point35°
Wed, 2173° / 50°0
73 °
Irwin, Wednesday, 21 October
Clear. High 73°, low 50°.
Pressure30.06 inHg
Wind15.2 mph NW
Humidity30%
Visibility—
Dew point30°
Thu, 2276° / 48°0
76 °
Irwin, Thursday, 22 October
Clear. High 76°, low 48°.
Pressure30.12 inHg
Wind9.7 mph N
Humidity24%
Visibility—
Dew point26°
Fri, 2376° / 52°0
76 °
Irwin, Friday, 23 October
Clear. High 76°, low 52°.
Pressure30.06 inHg
Wind17.4 mph NW
Humidity27%
Visibility—
Dew point30°
Sat, 2476° / 49°0
76 °
Irwin, Saturday, 24 October
Clear. High 76°, low 49°.
Pressure30.18 inHg
Wind8.4 mph N
Humidity21%
Visibility—
Dew point22°
Sun, 2578° / 50°0
78 °
Irwin, Sunday, 25 October
Clear. High 78°, low 50°.
Pressure30.09 inHg
Wind7.4 mph N
Humidity17%
Visibility—
Dew point20°
Mon, 2677° / 50°0
77 °
Irwin, Monday, 26 October
Mostly clear. High 77°, low 50°.
Pressure29.71 inHg
Wind13.3 mph NW
Humidity14%
Visibility—
Dew point14°
Tue, 2775° / 51°0
75 °
Irwin, Tuesday, 27 October
Partly cloudy. High 75°, low 51°.
Pressure29.65 inHg
Wind14 mph SE
Humidity21%
Visibility—
Dew point24°
Wed, 2872° / 49°0
72 °
Irwin, Wednesday, 28 October
Overcast. High 72°, low 49°.
Pressure29.97 inHg
Wind9.5 mph SE
Humidity42%
Visibility—
Dew point40°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2971° / 51°0.06
71 °
Irwin, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high71°
Average low51°
Average precipitation0.06 in
Chance of precipitation13%
Record high85° (2003)
Record low40° (1971)
Fri, 3071° / 50°0.06
71 °
Irwin, Friday, 30 October
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.06 in
Chance of precipitation17%
Record high84° (1993)
Record low36° (1971)
Sat, 3171° / 50°0.02
71 °
Irwin, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high71°
Average low50°
Average precipitation0.02 in
Chance of precipitation10%
Record high82° (2015)
Record low37° (2019)
Sun, 0171° / 49°0.04
71 °
Irwin, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high71°
Average low49°
Average precipitation0.04 in
Chance of precipitation10%
Record high83° (2020)
Record low37° (2019)
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)
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.