Monthly outlook for Riverdale, ID: average high 62.2°, average low 39.4°. That is 4.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.2 inches), against a normal of 7 days and 2.0 inches. The warmest day looks like 20 October (70.5°), the coolest 24 October (34.1°).
62.2°/39.4°
Average high / low
+4.9°
Above normal
2 / 7
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
62.8°
55.4°
+4.1°
29 October – 7 November
61.3°
49.3°
+6.7°
8 November – 17 November
at normal
45.8°
—
October records over 66 years
86.5°2 October 1987All-time high
3°26 October 2020All-time low
Climate normals and records are computed from the nearest reference point — St. Maries (1 mi).
Tue, 2071° / 38°0
71 °
Riverdale, Tuesday, 20 October
Overcast. High 71°, low 38°.
Pressure30.03 inHg
Wind2.1 mph NW
Humidity44%
Visibility6.2 mi
Dew point41°
Wed, 2167° / 45°0
67 °
Riverdale, Wednesday, 21 October
Overcast. High 67°, low 45°.
Pressure29.97 inHg
Wind1.7 mph SW
Humidity47%
Visibility6.2 mi
Dew point42°
Thu, 2262° / 48°0.02
62 °
Riverdale, Thursday, 22 October
Light rain. High 62°, low 48°.
Pressure29.85 inHg
Wind3.7 mph E
Humidity69%
Visibility6.2 mi
Dew point47°
Fri, 2354° / 40°0.09
54 °
Riverdale, Friday, 23 October
Light rain. High 54°, low 40°.
Pressure30.06 inHg
Wind9.7 mph SW
Humidity63%
Visibility6.2 mi
Dew point37°
Sat, 2454° / 34°0
54 °
Riverdale, Saturday, 24 October
Partly cloudy. High 54°, low 34°.
Pressure30.21 inHg
Wind5.3 mph SE
Humidity54%
Visibility—
Dew point32°
Sun, 2565° / 37°0
65 °
Riverdale, Sunday, 25 October
Mostly clear. High 65°, low 37°.
Pressure30.24 inHg
Wind6.4 mph SW
Humidity24%
Visibility—
Dew point20°
Mon, 2663° / 39°0
63 °
Riverdale, Monday, 26 October
Overcast. High 63°, low 39°.
Pressure30.15 inHg
Wind3.7 mph E
Humidity29%
Visibility—
Dew point23°
Tue, 2763° / 35°0
63 °
Riverdale, Tuesday, 27 October
Clear. High 63°, low 35°.
Pressure30.24 inHg
Wind4.2 mph E
Humidity36%
Visibility—
Dew point26°
Wed, 2866° / 35°0
66 °
Riverdale, Wednesday, 28 October
Partly cloudy. High 66°, low 35°.
Pressure30.09 inHg
Wind4.3 mph E
Humidity30%
Visibility—
Dew point22°
Thu, 2964° / 40°0
64 °
Riverdale, Thursday, 29 October
Mostly clear. High 64°, low 40°.
Pressure29.94 inHg
Wind3.2 mph NW
Humidity30%
Visibility—
Dew point25°
Fri, 3061° / 37°0
61 °
Riverdale, Friday, 30 October
Overcast. High 61°, low 37°.
Pressure29.83 inHg
Wind4.4 mph W
Humidity34%
Visibility—
Dew point27°
Sat, 3162° / 36°0
62 °
Riverdale, Saturday, 31 October
Clear. High 62°, low 36°.
Pressure29.97 inHg
Wind3.6 mph W
Humidity33%
Visibility—
Dew point25°
Sun, 0168° / 39°0
68 °
Riverdale, Sunday, 1 November
Mostly clear. High 68°, low 39°.
Pressure29.94 inHg
Wind3.8 mph E
Humidity37%
Visibility—
Dew point30°
Mon, 0253° / 46°0.09
53 °
Riverdale, Monday, 2 November
Light rain. High 53°, low 46°.
Pressure30.12 inHg
Wind3.5 mph SE
Humidity93%
Visibility—
Dew point46°
Tue, 0361° / 42°0
61 °
Riverdale, Tuesday, 3 November
Overcast. High 61°, low 42°.
Pressure30.12 inHg
Wind3 mph E
Humidity58%
Visibility—
Dew point39°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0449° / 36°0.2
49 °
Riverdale, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high49°
Average low36°
Average precipitation0.2 in
Chance of precipitation53%
Record high66° (1975)
Record low17° (1961)
Thu, 0549° / 35°0.15
49 °
Riverdale, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low35°
Average precipitation0.15 in
Chance of precipitation57%
Record high65° (1975)
Record low9° (1961)
Fri, 0648° / 35°0.19
48 °
Riverdale, Friday, 6 November
Climate normal for this date — 60-year average.
Average high48°
Average low35°
Average precipitation0.19 in
Chance of precipitation58%
Record high65° (2012)
Record low12° (1971)
Sat, 0747° / 35°0.21
47 °
Riverdale, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.21 in
Chance of precipitation58%
Record high67° (1999)
Record low14° (2017)
Sun, 0847° / 34°0.13
47 °
Riverdale, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.13 in
Chance of precipitation55%
Record high67° (2016)
Record low20° (1994)
Mon, 0947° / 34°0.15
47 °
Riverdale, Monday, 9 November
Climate normal for this date — 60-year average.
Average high47°
Average low34°
Average precipitation0.15 in
Chance of precipitation50%
Record high63° (2016)
Record low16° (1986)
Tue, 1046° / 33°0.12
46 °
Riverdale, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.12 in
Chance of precipitation48%
Record high65° (2016)
Record low10° (1986)
Wed, 1146° / 32°0.13
46 °
Riverdale, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.13 in
Chance of precipitation40%
Record high66° (2016)
Record low2° (2000)
Thu, 1246° / 33°0.17
46 °
Riverdale, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.17 in
Chance of precipitation55%
Record high65° (1999)
Record low7° (2000)
Fri, 1345° / 34°0.16
45 °
Riverdale, Friday, 13 November
Climate normal for this date — 60-year average.
Average high45°
Average low34°
Average precipitation0.16 in
Chance of precipitation58%
Record high64° (1999)
Record low6° (2000)
Sat, 1446° / 33°0.13
46 °
Riverdale, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high46°
Average low33°
Average precipitation0.13 in
Chance of precipitation52%
Record high66° (1999)
Record low9° (2000)
Sun, 1546° / 32°0.11
46 °
Riverdale, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high46°
Average low32°
Average precipitation0.11 in
Chance of precipitation45%
Record high62° (1999)
Record low8° (2000)
Mon, 1644° / 33°0.18
44 °
Riverdale, Monday, 16 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.18 in
Chance of precipitation55%
Record high60° (1999)
Record low11° (2011)
Tue, 1744° / 33°0.19
44 °
Riverdale, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high44°
Average low33°
Average precipitation0.19 in
Chance of precipitation58%
Record high62° (2008)
Record low9° (1987)
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 Riverdale, ID 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 Riverdale, ID 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.