Monthly outlook for Sunnyside, ID: average high 54.3°, average low 40.1°. That is 1.6° above the climate normal for October. Precipitation is expected on 5 days (about 2.0 inches), against a normal of 7 days and 2.3 inches. The warmest day looks like 16 October (71.8°), the coolest 25 October (32.4°).
54.3°/40.1°
Average high / low
+1.6°
Above normal
5 / 7
Wet days / normal
2.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
60.1°
53.5°
+3.7°
26 October – 4 November
44.5°
47°
-1.4°
5 November – 14 November
at normal
43.2°
—
October records over 66 years
82.4°1 October 1992All-time high
16.5°29 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Hope (5 mi).
Sat, 1765° / 44°0
65 °
Sunnyside, Saturday, 17 October
Overcast. High 65°, low 44°.
Pressure30.03 inHg
Wind9.9 mph S
Humidity43%
Visibility6.2 mi
Dew point38°
Sun, 1856° / 41°0
56 °
Sunnyside, Sunday, 18 October
Overcast. High 56°, low 41°.
Pressure30.12 inHg
Wind0.9 mph S
Humidity54%
Visibility6.2 mi
Dew point38°
Mon, 1959° / 41°0
59 °
Sunnyside, Monday, 19 October
Overcast. High 59°, low 41°.
Pressure29.80 inHg
Wind4.6 mph N
Humidity45%
Visibility6.2 mi
Dew point35°
Tue, 2061° / 46°0
61 °
Sunnyside, Tuesday, 20 October
Overcast. High 61°, low 46°.
Pressure29.94 inHg
Wind3 mph N
Humidity58%
Visibility—
Dew point40°
Wed, 2164° / 42°0
64 °
Sunnyside, Wednesday, 21 October
Clear. High 64°, low 42°.
Pressure30.00 inHg
Wind4 mph N
Humidity53%
Visibility—
Dew point39°
Thu, 2263° / 37°0
63 °
Sunnyside, Thursday, 22 October
Partly cloudy. High 63°, low 37°.
Pressure29.94 inHg
Wind3.6 mph W
Humidity31%
Visibility—
Dew point24°
Fri, 2354° / 35°0
54 °
Sunnyside, Friday, 23 October
Overcast. High 54°, low 35°.
Pressure29.97 inHg
Wind6.3 mph W
Humidity51%
Visibility—
Dew point32°
Sat, 2453° / 33°0
53 °
Sunnyside, Saturday, 24 October
Partly cloudy. High 53°, low 33°.
Pressure30.36 inHg
Wind3 mph SW
Humidity55%
Visibility—
Dew point31°
Sun, 2554° / 32°0
54 °
Sunnyside, Sunday, 25 October
Overcast. High 54°, low 32°.
Pressure30.27 inHg
Wind4.8 mph SW
Humidity36%
Visibility—
Dew point20°
Mon, 2643° / 39°0.2
43 °
Sunnyside, Monday, 26 October
Light rain. High 43°, low 39°.
Pressure30.12 inHg
Wind3.5 mph S
Humidity65%
Visibility—
Dew point32°
Tue, 2742° / 41°0.59
42 °
Sunnyside, Tuesday, 27 October
Light rain. High 42°, low 41°.
Pressure29.85 inHg
Wind3.8 mph NE
Humidity97%
Visibility—
Dew point41°
Wed, 2843° / 41°0.2
43 °
Sunnyside, Wednesday, 28 October
Light rain. High 43°, low 41°.
Pressure29.83 inHg
Wind3.6 mph N
Humidity97%
Visibility—
Dew point41°
Thu, 2942° / 40°0.01
42 °
Sunnyside, Thursday, 29 October
Light rain. High 42°, low 40°.
Pressure30.12 inHg
Wind4.4 mph SW
Humidity94%
Visibility—
Dew point39°
Fri, 3048° / 43°0.29
48 °
Sunnyside, Friday, 30 October
Light rain. High 48°, low 43°.
Pressure29.97 inHg
Wind6 mph SW
Humidity92%
Visibility—
Dew point44°
Sat, 3148° / 44°0.7
48 °
Sunnyside, Saturday, 31 October
Rain. High 48°, low 44°.
Pressure29.77 inHg
Wind5.6 mph SW
Humidity92%
Visibility—
Dew point43°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0146° / 37°0.17
46 °
Sunnyside, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high46°
Average low37°
Average precipitation0.17 in
Chance of precipitation50%
Record high61° (1988)
Record low18° (1991)
Mon, 0246° / 38°0.19
46 °
Sunnyside, Monday, 2 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.19 in
Chance of precipitation52%
Record high61° (1981)
Record low15° (1991)
Tue, 0346° / 38°0.13
46 °
Sunnyside, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.13 in
Chance of precipitation50%
Record high58° (2016)
Record low24° (1991)
Wed, 0446° / 38°0.26
46 °
Sunnyside, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high46°
Average low38°
Average precipitation0.26 in
Chance of precipitation58%
Record high63° (1975)
Record low21° (2003)
Thu, 0545° / 37°0.18
45 °
Sunnyside, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high45°
Average low37°
Average precipitation0.18 in
Chance of precipitation58%
Record high62° (1975)
Record low22° (1971)
Fri, 0644° / 37°0.23
44 °
Sunnyside, Friday, 6 November
Climate normal for this date — 60-year average.
Average high44°
Average low37°
Average precipitation0.23 in
Chance of precipitation62%
Record high57° (2012)
Record low18° (1973)
Sat, 0744° / 36°0.23
44 °
Sunnyside, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high44°
Average low36°
Average precipitation0.23 in
Chance of precipitation60%
Record high56° (1999)
Record low24° (2022)
Sun, 0844° / 36°0.17
44 °
Sunnyside, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low36°
Average precipitation0.17 in
Chance of precipitation60%
Record high60° (2016)
Record low21° (1966)
Mon, 0944° / 35°0.17
44 °
Sunnyside, Monday, 9 November
Climate normal for this date — 60-year average.
Average high44°
Average low35°
Average precipitation0.17 in
Chance of precipitation55%
Record high58° (2016)
Record low17° (1986)
Tue, 1042° / 35°0.17
42 °
Sunnyside, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high42°
Average low35°
Average precipitation0.17 in
Chance of precipitation53%
Record high55° (2016)
Record low15° (1985)
Wed, 1142° / 34°0.16
42 °
Sunnyside, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high42°
Average low34°
Average precipitation0.16 in
Chance of precipitation45%
Record high57° (2016)
Record low10° (1985)
Thu, 1243° / 35°0.22
43 °
Sunnyside, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low35°
Average precipitation0.22 in
Chance of precipitation58%
Record high58° (1990)
Record low14° (1985)
Fri, 1342° / 35°0.19
42 °
Sunnyside, Friday, 13 November
Climate normal for this date — 60-year average.
Average high42°
Average low35°
Average precipitation0.19 in
Chance of precipitation58%
Record high55° (2025)
Record low20° (2014)
Sat, 1442° / 35°0.2
42 °
Sunnyside, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high42°
Average low35°
Average precipitation0.2 in
Chance of precipitation57%
Record high59° (1999)
Record low21° (1985)
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 Sunnyside, 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 Sunnyside, 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.