Monthly outlook for Fairfield, ID: average high 56.7°, average low 36.9°. That is 0.7° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 18 October (63.1°), the coolest 23 October (30.2°).
56.7°/36.9°
Average high / low
+0.7°
Above normal
1 / 3
Wet days / normal
0.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
57.7°
57.3°
+0.3°
23 October – 1 November
55°
50.7°
+2.4°
2 November – 11 November
at normal
45.5°
—
October records over 66 years
84.7°2 October 2010All-time high
-4.4°27 October 1970All-time low
Wed, 1461° / 34°0
61 °
Fairfield, Wednesday, 14 October
Mostly clear. High 61°, low 34°.
Pressure30.18 inHg
Wind3.9 mph S
Humidity50%
Visibility6.2 mi
Dew point30°
Thu, 1560° / 32°0
60 °
Fairfield, Thursday, 15 October
Clear. High 60°, low 32°.
Pressure30.53 inHg
Wind2.8 mph SE
Humidity42%
Visibility6.2 mi
Dew point31°
Fri, 1663° / 36°0
63 °
Fairfield, Friday, 16 October
Clear. High 63°, low 36°.
Pressure30.45 inHg
Wind8.9 mph E
Humidity31%
Visibility6.2 mi
Dew point24°
Sat, 1762° / 44°0
62 °
Fairfield, Saturday, 17 October
Clear. High 62°, low 44°.
Pressure30.21 inHg
Wind5.4 mph SE
Humidity34%
Visibility—
Dew point28°
Sun, 1863° / 39°0
63 °
Fairfield, Sunday, 18 October
Clear. High 63°, low 39°.
Pressure30.03 inHg
Wind5 mph SE
Humidity37%
Visibility—
Dew point30°
Mon, 1958° / 46°0.02
58 °
Fairfield, Monday, 19 October
Light rain. High 58°, low 46°.
Pressure29.77 inHg
Wind17.4 mph W
Humidity26%
Visibility—
Dew point22°
Tue, 2051° / 39°0.17
51 °
Fairfield, Tuesday, 20 October
Rain. High 51°, low 39°.
Pressure29.80 inHg
Wind8.6 mph NW
Humidity55%
Visibility—
Dew point30°
Wed, 2152° / 36°0
52 °
Fairfield, Wednesday, 21 October
Partly cloudy. High 52°, low 36°.
Pressure29.91 inHg
Wind7.2 mph N
Humidity47%
Visibility—
Dew point25°
Thu, 2253° / 34°0
53 °
Fairfield, Thursday, 22 October
Overcast. High 53°, low 34°.
Pressure29.94 inHg
Wind20.7 mph NW
Humidity25%
Visibility—
Dew point12°
Fri, 2349° / 30°0
49 °
Fairfield, Friday, 23 October
Clear. High 49°, low 30°.
Pressure30.27 inHg
Wind14 mph NW
Humidity33%
Visibility—
Dew point15°
Sat, 2454° / 32°0
54 °
Fairfield, Saturday, 24 October
Clear. High 54°, low 32°.
Pressure30.47 inHg
Wind8.5 mph S
Humidity28%
Visibility—
Dew point13°
Sun, 2556° / 36°0
56 °
Fairfield, Sunday, 25 October
Clear. High 56°, low 36°.
Pressure30.39 inHg
Wind4.6 mph S
Humidity32%
Visibility—
Dew point20°
Mon, 2661° / 40°0
61 °
Fairfield, Monday, 26 October
Clear. High 61°, low 40°.
Pressure30.03 inHg
Wind8.6 mph SW
Humidity34%
Visibility—
Dew point25°
Tue, 2757° / 41°0
57 °
Fairfield, Tuesday, 27 October
Overcast. High 57°, low 41°.
Pressure29.88 inHg
Wind16.9 mph W
Humidity25%
Visibility—
Dew point18°
Wed, 2852° / 38°0
52 °
Fairfield, Wednesday, 28 October
Overcast. High 52°, low 38°.
Pressure30.12 inHg
Wind9.5 mph NW
Humidity39%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2949° / 30°0.05
49 °
Fairfield, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low30°
Average precipitation0.05 in
Chance of precipitation27%
Record high66° (1962)
Record low7° (1970)
Fri, 3048° / 29°0.04
48 °
Fairfield, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation20%
Record high65° (1962)
Record low-4° (1991)
Sat, 3148° / 29°0.02
48 °
Fairfield, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.02 in
Chance of precipitation13%
Record high65° (1988)
Record low6° (1991)
Sun, 0148° / 29°0.04
48 °
Fairfield, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation20%
Record high65° (1965)
Record low6° (1984)
Mon, 0247° / 29°0.06
47 °
Fairfield, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.06 in
Chance of precipitation25%
Record high63° (2020)
Record low3° (1961)
Tue, 0348° / 28°0.04
48 °
Fairfield, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.04 in
Chance of precipitation17%
Record high64° (2020)
Record low-4° (1991)
Wed, 0447° / 29°0.05
47 °
Fairfield, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.05 in
Chance of precipitation20%
Record high64° (2020)
Record low9° (1961)
Thu, 0547° / 28°0.06
47 °
Fairfield, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.06 in
Chance of precipitation20%
Record high64° (1980)
Record low3° (1961)
Fri, 0646° / 29°0.07
46 °
Fairfield, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.07 in
Chance of precipitation30%
Record high64° (1999)
Record low2° (1971)
Sat, 0746° / 29°0.06
46 °
Fairfield, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.06 in
Chance of precipitation35%
Record high63° (1999)
Record low14° (1991)
Sun, 0844° / 27°0.06
44 °
Fairfield, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.06 in
Chance of precipitation32%
Record high60° (1976)
Record low-3° (1994)
Mon, 0943° / 27°0.07
43 °
Fairfield, Monday, 9 November
Climate normal for this date — 60-year average.
Average high43°
Average low27°
Average precipitation0.07 in
Chance of precipitation30%
Record high59° (2019)
Record low6° (1998)
Tue, 1043° / 26°0.05
43 °
Fairfield, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.05 in
Chance of precipitation27%
Record high61° (2016)
Record low3° (2022)
Wed, 1143° / 25°0.06
43 °
Fairfield, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high43°
Average low25°
Average precipitation0.06 in
Chance of precipitation27%
Record high60° (1990)
Record low-6° (2022)
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 Fairfield, 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 Fairfield, 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.