Monthly outlook for Poston, AZ: average high 84°, average low 65.5°. That is 0.9° below the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 1 days and 0.2 inches. The warmest day looks like 16 October (92.4°), the coolest 25 October (59.9°).
84°/65.5°
Average high / low
−0.9°
Below normal
0 / 1
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
84.1°
87.2°
-1.7°
25 October – 3 November
83.9°
82°
+1.1°
4 November – 13 November
at normal
78.4°
—
October records over 66 years
111.9°1 October 2024All-time high
33.1°30 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Big River (10 mi).
Fri, 1692° / 69°0
92 °
Poston, Friday, 16 October
Clear. High 92°, low 69°.
Pressure30.09 inHg
Wind11 mph NE
Humidity15%
Visibility6.2 mi
Dew point38°
Sat, 1787° / 68°0
87 °
Poston, Saturday, 17 October
Overcast. High 87°, low 68°.
Pressure30.09 inHg
Wind9.8 mph E
Humidity14%
Visibility6.2 mi
Dew point23°
Sun, 1884° / 69°0
84 °
Poston, Sunday, 18 October
Partly cloudy. High 84°, low 69°.
Pressure30.00 inHg
Wind4.5 mph E
Humidity22%
Visibility6.2 mi
Dew point40°
Mon, 1987° / 68°0
87 °
Poston, Monday, 19 October
Clear. High 87°, low 68°.
Pressure29.94 inHg
Wind2.8 mph E
Humidity38%
Visibility—
Dew point52°
Tue, 2090° / 67°0.03
90 °
Poston, Tuesday, 20 October
Light rain. High 90°, low 67°.
Pressure29.88 inHg
Wind10.1 mph S
Humidity28%
Visibility—
Dew point46°
Wed, 2176° / 63°0
76 °
Poston, Wednesday, 21 October
Overcast. High 76°, low 63°.
Pressure29.85 inHg
Wind14.8 mph SW
Humidity38%
Visibility—
Dew point44°
Thu, 2276° / 60°0
76 °
Poston, Thursday, 22 October
Clear. High 76°, low 60°.
Pressure29.97 inHg
Wind10.7 mph W
Humidity38%
Visibility—
Dew point43°
Fri, 2382° / 64°0
82 °
Poston, Friday, 23 October
Clear. High 82°, low 64°.
Pressure30.06 inHg
Wind9.1 mph N
Humidity26%
Visibility—
Dew point36°
Sat, 2479° / 66°0
79 °
Poston, Saturday, 24 October
Clear. High 79°, low 66°.
Pressure30.24 inHg
Wind22.6 mph N
Humidity13%
Visibility—
Dew point19°
Sun, 2578° / 60°0
78 °
Poston, Sunday, 25 October
Clear. High 78°, low 60°.
Pressure30.33 inHg
Wind8 mph N
Humidity15%
Visibility—
Dew point20°
Mon, 2682° / 62°0
82 °
Poston, Monday, 26 October
Overcast. High 82°, low 62°.
Pressure30.09 inHg
Wind6.9 mph N
Humidity14%
Visibility—
Dew point21°
Tue, 2784° / 65°0
84 °
Poston, Tuesday, 27 October
Overcast. High 84°, low 65°.
Pressure30.06 inHg
Wind5.4 mph N
Humidity17%
Visibility—
Dew point28°
Wed, 2886° / 67°0
86 °
Poston, Wednesday, 28 October
Mostly clear. High 86°, low 67°.
Pressure30.03 inHg
Wind5 mph N
Humidity17%
Visibility—
Dew point30°
Thu, 2987° / 67°0
87 °
Poston, Thursday, 29 October
Clear. High 87°, low 67°.
Pressure30.03 inHg
Wind2.7 mph W
Humidity13%
Visibility—
Dew point25°
Fri, 3087° / 68°0
87 °
Poston, Friday, 30 October
Mostly clear. High 87°, low 68°.
Pressure30.09 inHg
Wind3.2 mph E
Humidity14%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3180° / 56°0.01
80 °
Poston, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.01 in
Chance of precipitation3%
Record high96° (1988)
Record low37° (1971)
Sun, 0181° / 55°0.04
81 °
Poston, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.04 in
Chance of precipitation2%
Record high93° (2020)
Record low40° (1972)
Mon, 0281° / 55°0
81 °
Poston, Monday, 2 November
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0 in
Chance of precipitation5%
Record high95° (2020)
Record low41° (1971)
Tue, 0381° / 54°0
81 °
Poston, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0 in
Chance of precipitation5%
Record high92° (2020)
Record low44° (2004)
Wed, 0481° / 55°0
81 °
Poston, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0 in
Chance of precipitation0%
Record high94° (2020)
Record low45° (2004)
Thu, 0581° / 54°0.02
81 °
Poston, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.02 in
Chance of precipitation3%
Record high96° (2020)
Record low44° (2002)
Fri, 0680° / 55°0
80 °
Poston, Friday, 6 November
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0 in
Chance of precipitation2%
Record high91° (1988)
Record low44° (2011)
Sat, 0779° / 55°0.02
79 °
Poston, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation3%
Record high91° (2007)
Record low43° (2011)
Sun, 0878° / 54°0.02
78 °
Poston, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high78°
Average low54°
Average precipitation0.02 in
Chance of precipitation3%
Record high92° (2016)
Record low43° (2000)
Mon, 0978° / 53°0
78 °
Poston, Monday, 9 November
Climate normal for this date — 60-year average.
Average high78°
Average low53°
Average precipitation0 in
Chance of precipitation2%
Record high89° (2025)
Record low42° (1986)
Tue, 1077° / 52°0.01
77 °
Poston, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0.01 in
Chance of precipitation3%
Record high89° (2025)
Record low41° (1998)
Wed, 1177° / 52°0.02
77 °
Poston, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0.02 in
Chance of precipitation8%
Record high88° (2013)
Record low42° (2020)
Thu, 1277° / 52°0.02
77 °
Poston, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high77°
Average low52°
Average precipitation0.02 in
Chance of precipitation7%
Record high91° (1967)
Record low41° (1982)
Fri, 1376° / 51°0.01
76 °
Poston, Friday, 13 November
Climate normal for this date — 60-year average.
Average high76°
Average low51°
Average precipitation0.01 in
Chance of precipitation3%
Record high90° (1999)
Record low38° (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 Poston, AZ 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 Poston, AZ 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.