Monthly outlook for Coulam, ID: average high 58°, average low 40.1°. That is 0° above the climate normal for October. Precipitation is expected on 4 days (about 1.8 inches), against a normal of 4 days and 0.9 inches. The warmest day looks like 18 October (68.1°), the coolest 22 October (32.6°).
58°/40.1°
Average high / low
+0°
Above normal
4 / 4
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
58.9°
59.3°
-0.2°
21 October – 30 October
56.5°
54.1°
+1.3°
31 October – 9 November
at normal
48.6°
—
October records over 66 years
85.6°2 October 2010All-time high
1.6°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Oxford (3 mi).
Mon, 1255° / 48°0.69
55 °
Coulam, Monday, 12 October
Rain. High 55°, low 48°.
Pressure29.83 inHg
Wind2.1 mph NW
Humidity92%
Visibility4.5 mi
Dew point43°
Tue, 1351° / 37°0.13
51 °
Coulam, Tuesday, 13 October
Light rain. High 51°, low 37°.
Pressure30.06 inHg
Wind9.5 mph NW
Humidity82%
Visibility6.2 mi
Dew point36°
Wed, 1453° / 36°0
53 °
Coulam, Wednesday, 14 October
Clear. High 53°, low 36°.
Pressure30.12 inHg
Wind9.1 mph NW
Humidity62%
Visibility6.2 mi
Dew point35°
Thu, 1561° / 36°0
61 °
Coulam, Thursday, 15 October
Clear. High 61°, low 36°.
Pressure30.45 inHg
Wind4.4 mph N
Humidity54%
Visibility6.2 mi
Dew point37°
Fri, 1660° / 38°0
60 °
Coulam, Friday, 16 October
Clear. High 60°, low 38°.
Pressure30.45 inHg
Wind5.1 mph E
Humidity42%
Visibility—
Dew point30°
Sat, 1765° / 42°0
65 °
Coulam, Saturday, 17 October
Clear. High 65°, low 42°.
Pressure30.18 inHg
Wind6.1 mph S
Humidity48%
Visibility—
Dew point36°
Sun, 1868° / 47°0
68 °
Coulam, Sunday, 18 October
Overcast. High 68°, low 47°.
Pressure30.06 inHg
Wind6.7 mph S
Humidity35%
Visibility—
Dew point33°
Mon, 1966° / 48°0.02
66 °
Coulam, Monday, 19 October
Light rain. High 66°, low 48°.
Pressure29.88 inHg
Wind13.5 mph S
Humidity30%
Visibility—
Dew point29°
Tue, 2048° / 40°0.17
48 °
Coulam, Tuesday, 20 October
Snow. High 48°, low 40°.
Pressure30.00 inHg
Wind10.7 mph NW
Humidity52%
Visibility—
Dew point28°
Wed, 2147° / 34°0
47 °
Coulam, Wednesday, 21 October
Overcast. High 47°, low 34°.
Pressure30.27 inHg
Wind9 mph SW
Humidity51%
Visibility—
Dew point23°
Thu, 2254° / 33°0
54 °
Coulam, Thursday, 22 October
Clear. High 54°, low 33°.
Pressure30.39 inHg
Wind6.8 mph S
Humidity43%
Visibility—
Dew point25°
Fri, 2363° / 40°0
63 °
Coulam, Friday, 23 October
Clear. High 63°, low 40°.
Pressure30.03 inHg
Wind8.9 mph S
Humidity33%
Visibility—
Dew point26°
Sat, 2464° / 44°0
64 °
Coulam, Saturday, 24 October
Overcast. High 64°, low 44°.
Pressure29.74 inHg
Wind10 mph N
Humidity27%
Visibility—
Dew point24°
Sun, 2552° / 34°0
52 °
Coulam, Sunday, 25 October
Mostly clear. High 52°, low 34°.
Pressure29.97 inHg
Wind8.4 mph N
Humidity26%
Visibility—
Dew point13°
Mon, 2658° / 37°0
58 °
Coulam, Monday, 26 October
Mostly clear. High 58°, low 37°.
Pressure30.06 inHg
Wind5.2 mph N
Humidity23%
Visibility—
Dew point14°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2753° / 34°0.04
53 °
Coulam, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high53°
Average low34°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (1990)
Record low8° (1970)
Wed, 2852° / 34°0.06
52 °
Coulam, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high52°
Average low34°
Average precipitation0.06 in
Chance of precipitation30%
Record high69° (2008)
Record low5° (1970)
Thu, 2951° / 33°0.07
51 °
Coulam, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low33°
Average precipitation0.07 in
Chance of precipitation33%
Record high70° (1962)
Record low5° (1971)
Fri, 3049° / 32°0.07
49 °
Coulam, Friday, 30 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.07 in
Chance of precipitation28%
Record high71° (1962)
Record low2° (2019)
Sat, 3149° / 32°0.07
49 °
Coulam, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.07 in
Chance of precipitation27%
Record high67° (2014)
Record low8° (2019)
Sun, 0149° / 31°0.04
49 °
Coulam, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high67° (1965)
Record low7° (2004)
Mon, 0249° / 31°0.04
49 °
Coulam, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation25%
Record high64° (1962)
Record low5° (1991)
Tue, 0350° / 31°0.03
50 °
Coulam, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.03 in
Chance of precipitation17%
Record high66° (1962)
Record low-2° (1991)
Wed, 0450° / 32°0.05
50 °
Coulam, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low32°
Average precipitation0.05 in
Chance of precipitation22%
Record high66° (2020)
Record low20° (1994)
Thu, 0549° / 33°0.06
49 °
Coulam, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high49°
Average low33°
Average precipitation0.06 in
Chance of precipitation28%
Record high66° (1980)
Record low1° (1961)
Fri, 0649° / 32°0.04
49 °
Coulam, Friday, 6 November
Climate normal for this date — 60-year average.
Average high49°
Average low32°
Average precipitation0.04 in
Chance of precipitation22%
Record high70° (2020)
Record low-4° (1971)
Sat, 0748° / 31°0.08
48 °
Coulam, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high48°
Average low31°
Average precipitation0.08 in
Chance of precipitation35%
Record high66° (1999)
Record low7° (2003)
Sun, 0847° / 31°0.09
47 °
Coulam, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.09 in
Chance of precipitation38%
Record high62° (1965)
Record low14° (1961)
Mon, 0946° / 29°0.09
46 °
Coulam, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low29°
Average precipitation0.09 in
Chance of precipitation33%
Record high62° (2016)
Record low12° (1966)
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 Coulam, 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 Coulam, 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.