Monthly outlook for Riverdale, ID: average high 56.6°, average low 38.2°. That is 2.8° above the climate normal for October. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 7 days and 2.1 inches. The warmest day looks like 3 November (68.1°), the coolest 29 October (31°).
56.6°/38.2°
Average high / low
+2.8°
Above normal
6 / 7
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
22 October – 31 October
55.8°
53.1°
+1.5°
1 November – 10 November
57.9°
48.2°
+5.4°
11 November – 20 November
at normal
44.7°
—
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).
Fri, 2357° / 35°0.31
57 °
Riverdale, Friday, 23 October
Rain. High 57°, low 35°.
Pressure30.06 inHg
Wind6.7 mph W
Humidity67%
Visibility6.2 mi
Dew point38°
Sat, 2455° / 34°0
55 °
Riverdale, Saturday, 24 October
Overcast. High 55°, low 34°.
Pressure30.21 inHg
Wind3.8 mph S
Humidity47%
Visibility6.2 mi
Dew point26°
Sun, 2562° / 38°0
62 °
Riverdale, Sunday, 25 October
Overcast. High 62°, low 38°.
Pressure30.03 inHg
Wind3.3 mph E
Humidity46%
Visibility6.2 mi
Dew point37°
Mon, 2661° / 40°0
61 °
Riverdale, Monday, 26 October
Light rain. High 61°, low 40°.
Pressure30.00 inHg
Wind4.8 mph E
Humidity54%
Visibility—
Dew point37°
Tue, 2744° / 41°0.63
44 °
Riverdale, Tuesday, 27 October
Rain. High 44°, low 41°.
Pressure30.12 inHg
Wind4.2 mph S
Humidity97%
Visibility—
Dew point41°
Wed, 2852° / 35°0.06
52 °
Riverdale, Wednesday, 28 October
Light rain. High 52°, low 35°.
Pressure30.33 inHg
Wind4.4 mph E
Humidity84%
Visibility—
Dew point40°
Thu, 2958° / 31°0
58 °
Riverdale, Thursday, 29 October
Partly cloudy. High 58°, low 31°.
Pressure30.06 inHg
Wind4.4 mph E
Humidity43%
Visibility—
Dew point25°
Fri, 3056° / 39°0
56 °
Riverdale, Friday, 30 October
Overcast. High 56°, low 39°.
Pressure29.88 inHg
Wind8.3 mph W
Humidity46%
Visibility—
Dew point31°
Sat, 3148° / 35°0
48 °
Riverdale, Saturday, 31 October
Partly cloudy. High 48°, low 35°.
Pressure30.00 inHg
Wind5.5 mph SW
Humidity66%
Visibility—
Dew point34°
Sun, 0155° / 35°0
55 °
Riverdale, Sunday, 1 November
Overcast. High 55°, low 35°.
Pressure30.12 inHg
Wind5.9 mph SW
Humidity55%
Visibility—
Dew point31°
Mon, 0259° / 36°0
59 °
Riverdale, Monday, 2 November
Overcast. High 59°, low 36°.
Pressure30.27 inHg
Wind4.7 mph E
Humidity40%
Visibility—
Dew point27°
Tue, 0368° / 38°0
68 °
Riverdale, Tuesday, 3 November
Overcast. High 68°, low 38°.
Pressure30.00 inHg
Wind4.4 mph E
Humidity28%
Visibility—
Dew point23°
Wed, 0460° / 43°0
60 °
Riverdale, Wednesday, 4 November
Overcast. High 60°, low 43°.
Pressure29.94 inHg
Wind6.8 mph SW
Humidity41%
Visibility—
Dew point31°
Thu, 0553° / 44°0.14
53 °
Riverdale, Thursday, 5 November
Light rain. High 53°, low 44°.
Pressure29.83 inHg
Wind7.4 mph S
Humidity68%
Visibility—
Dew point41°
Fri, 0652° / 49°0.37
52 °
Riverdale, Friday, 6 November
Rain. High 52°, low 49°.
Pressure29.74 inHg
Wind4.5 mph SE
Humidity87%
Visibility—
Dew point48°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Wed, 1843° / 32°0.16
43 °
Riverdale, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high43°
Average low32°
Average precipitation0.16 in
Chance of precipitation55%
Record high58° (2008)
Record low6° (1994)
Thu, 1943° / 31°0.15
43 °
Riverdale, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.15 in
Chance of precipitation52%
Record high57° (1966)
Record low10° (1985)
Fri, 2043° / 31°0.2
43 °
Riverdale, Friday, 20 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.2 in
Chance of precipitation52%
Record high58° (2002)
Record low13° (1977)
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.