As of 21:51 MDT

Weather in Islay, WY

54°Current weather

Islay, Wednesday, 7 October, 21:51

Clear. Feels like 51°. High 74°, low 47°.

Pressure30.03 inHg
Wind8.3 mph SW
Humidity40%
Visibility6.2 mi
Dew point30°

Monthly outlook for Islay, WY: average high 61.3°, average low 40.4°. That is 2.5° above the climate normal for October. Precipitation is expected on 4 days (about 0.8 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 9 October (79.4°), the coolest 16 October (22.6°).

61.3°/40.4°
Average high / low
+2.5°
Above normal
4 / 4
Wet days / normal
0.8 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
7 October – 16 October64.6°57.6°+3.9°
17 October – 26 October55.8°54.6°+0.7°
27 October – 5 Novemberat normal47.6°—

October records over 66 years

80.6°2 October 2024All-time high
-5.1°26 October 2020All-time low
Thu, 0879° / 48°0Mostly clear
79 °Mostly clear

Islay, Thursday, 8 October

Mostly clear. High 79°, low 48°.

Pressure29.97 inHg
Wind10.8 mph NW
Humidity18%
Visibility6.2 mi
Dew point22°
Fri, 0979° / 46°0.01Light rain
79 °Light rain

Islay, Friday, 9 October

Light rain. High 79°, low 46°.

Pressure29.80 inHg
Wind13 mph SW
Humidity20%
Visibility6.2 mi
Dew point26°
Sat, 1075° / 57°0Clear
75 °Clear

Islay, Saturday, 10 October

Clear. High 75°, low 57°.

Pressure29.65 inHg
Wind17.7 mph SW
Humidity21%
Visibility6.2 mi
Dew point29°
Sun, 1167° / 50°0.18Rain
67 °Rain

Islay, Sunday, 11 October

Rain. High 67°, low 50°.

Pressure29.71 inHg
Wind11.1 mph SW
Humidity32%
Visibility6.2 mi
Dew point36°
Mon, 1261° / 42°0.03Light rain
61 °Light rain

Islay, Monday, 12 October

Light rain. High 61°, low 42°.

Pressure29.83 inHg
Wind11.7 mph W
Humidity42%
Visibility—
Dew point36°
Tue, 1364° / 39°0Overcast
64 °Overcast

Islay, Tuesday, 13 October

Overcast. High 64°, low 39°.

Pressure30.00 inHg
Wind20.4 mph SE
Humidity42%
Visibility—
Dew point34°
Wed, 1464° / 51°0.26Rain
64 °Rain

Islay, Wednesday, 14 October

Rain. High 64°, low 51°.

Pressure29.53 inHg
Wind22.4 mph W
Humidity52%
Visibility—
Dew point42°
Thu, 1550° / 26°0.12Snow
50 °Snow

Islay, Thursday, 15 October

Snow. High 50°, low 26°.

Pressure30.00 inHg
Wind24.6 mph N
Humidity88%
Visibility—
Dew point29°
Fri, 1632° / 23°0Overcast
32 °Overcast

Islay, Friday, 16 October

Overcast. High 32°, low 23°.

Pressure30.42 inHg
Wind20.2 mph NW
Humidity55%
Visibility—
Dew point16°
Sat, 1750° / 26°0Clear
50 °Clear

Islay, Saturday, 17 October

Clear. High 50°, low 26°.

Pressure30.15 inHg
Wind25.7 mph W
Humidity31%
Visibility—
Dew point11°
Sun, 1860° / 40°0Overcast
60 °Overcast

Islay, Sunday, 18 October

Overcast. High 60°, low 40°.

Pressure30.03 inHg
Wind17 mph W
Humidity14%
Visibility—
Dew point8°
Mon, 1957° / 42°0Clear
57 °Clear

Islay, Monday, 19 October

Clear. High 57°, low 42°.

Pressure30.15 inHg
Wind16.1 mph W
Humidity20%
Visibility—
Dew point15°
Tue, 2054° / 38°0Overcast
54 °Overcast

Islay, Tuesday, 20 October

Overcast. High 54°, low 38°.

Pressure30.15 inHg
Wind12.4 mph S
Humidity41%
Visibility—
Dew point26°
Wed, 2163° / 42°0Clear
63 °Clear

Islay, Wednesday, 21 October

Clear. High 63°, low 42°.

Pressure29.83 inHg
Wind31.6 mph W
Humidity20%
Visibility—
Dew point17°
Thu, 2252° / 32°0.24Snow
52 °Snow

Islay, Thursday, 22 October

Snow. High 52°, low 32°.

Pressure29.65 inHg
Wind44 mph W
Humidity42%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2353° / 33°0.04Climate normal
53 °Climate normal

Islay, Friday, 23 October

Climate normal for this date — 60-year average.

Average high53°
Average low33°
Average precipitation0.04 in
Chance of precipitation17%
Record high74° (2003)
Record low12° (2020)
Sat, 2453° / 32°0.06Climate normal
53 °Climate normal

Islay, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high53°
Average low32°
Average precipitation0.06 in
Chance of precipitation18%
Record high70° (2014)
Record low15° (1975)
Sun, 2554° / 32°0.04Climate normal
54 °Climate normal

Islay, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high54°
Average low32°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (2014)
Record low2° (2020)
Mon, 2652° / 32°0.05Climate normal
52 °Climate normal

Islay, Monday, 26 October

Climate normal for this date — 60-year average.

Average high52°
Average low32°
Average precipitation0.05 in
Chance of precipitation22%
Record high71° (1977)
Record low-5° (2020)
Tue, 2750° / 31°0.02Climate normal
50 °Climate normal

Islay, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high50°
Average low31°
Average precipitation0.02 in
Chance of precipitation18%
Record high73° (2016)
Record low-1° (2011)
Wed, 2851° / 30°0.05Climate normal
51 °Climate normal

Islay, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high51°
Average low30°
Average precipitation0.05 in
Chance of precipitation18%
Record high70° (2024)
Record low1° (2019)
Thu, 2950° / 31°0.06Climate normal
50 °Climate normal

Islay, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high50°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (1968)
Record low-3° (2019)
Fri, 3047° / 29°0.04Climate normal
47 °Climate normal

Islay, Friday, 30 October

Climate normal for this date — 60-year average.

Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation23%
Record high67° (1968)
Record low-5° (2019)
Sat, 3146° / 29°0.05Climate normal
46 °Climate normal

Islay, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high46°
Average low29°
Average precipitation0.05 in
Chance of precipitation30%
Record high68° (2008)
Record low-2° (1991)
Sun, 0146° / 28°0.06Climate normal
46 °Climate normal

Islay, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high46°
Average low28°
Average precipitation0.06 in
Chance of precipitation28%
Record high65° (1988)
Record low2° (1991)
Mon, 0246° / 27°0.06Climate normal
46 °Climate normal

Islay, Monday, 2 November

Climate normal for this date — 60-year average.

Average high46°
Average low27°
Average precipitation0.06 in
Chance of precipitation27%
Record high67° (2025)
Record low-7° (1995)
Tue, 0346° / 26°0.05Climate normal
46 °Climate normal

Islay, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high46°
Average low26°
Average precipitation0.05 in
Chance of precipitation22%
Record high66° (2020)
Record low-8° (1967)
Wed, 0447° / 27°0.02Climate normal
47 °Climate normal

Islay, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°
Average low27°
Average precipitation0.02 in
Chance of precipitation12%
Record high65° (2001)
Record low1° (1990)
Thu, 0547° / 28°0.03Climate normal
47 °Climate normal

Islay, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high47°
Average low28°
Average precipitation0.03 in
Chance of precipitation18%
Record high66° (1975)
Record low-7° (1967)

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 Islay, WY 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 Islay, WY 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.