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Monmouth, IL

75°F
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Monmouth

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75°
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Monmouth, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Today Hourly 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

---

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
26
Clouds and sun, hot and humid
92°
73°
27
A shower and t-storm; humid
96°
71°
28
Mostly sunny, hot and humid
90°
67°
29
Mostly sunny
87°
63°
30
A strong afternoon t-storm
86°
62°
31
A couple of thunderstorms
88°
60°
1
Sunny spells
87°
58°
2
Clouds and sunshine
84°
59°
3
Mostly sunny
83°
60°
4
Sunshine
84°
63°
5
Plenty of sunshine
78°
60°
6
Thickening clouds
79°
64°
7
Couple of thunderstorms
84°
67°
8
Humid with plenty of sun
86°
67°
9
A thunderstorm in spots
86°
66°
10
A couple of afternoon showers
83°
66°
11
A shower and thunderstorm
85°
67°
12
Mostly sunny and humid
86°
67°
13
Mostly sunny
83°
66°
14
A thunderstorm in spots
85°
66°
15
Sunshine
86°
65°
16
Plenty of sunshine
81°
63°
17
Mostly sunny
81°
62°
18
Plenty of sun
83°
62°
19
Sunny
85°
63°
20
Partly sunny
86°
65°
21
Warm with plenty of sunshine
86°
66°
22
Warm with plenty of sunshine
87°
65°
23
Warm with plenty of sunshine
86°
66°
24
Warm with plenty of sunshine
86°
66°
25
Becoming cloudy and warm
87°
67°
26
Cloudy and warm
87°
67°
27
Warm with a sun-and-cloud mix
88°
66°
28
Sunshine; warm, less humid
86°
65°
29
Warm with plenty of sunshine
85°
64°
30
Warm with plenty of sunshine
85°
64°
31
Warm with plenty of sunshine
86°
65°
1
Warm with increasing clouds
87°
65°
2
Showers around in the morning
85°
62°
3
Mostly sunny
77°
56°
4
Partly sunny
78°
54°
5
Mostly sunny
80°
55°

Temperature Graph

°F
90° 82° 74° 66° 58° Aug
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo

Allergies-January Weather in Monmouth

Monmouth's Allergies-January 2026 forecast shows daily high temperatures ranging from 77° to 96°, with overnight lows between 54° and 73°. The average high for Allergies-January is 85° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how Allergies-January weather will actually feel in Monmouth. See also: September | October | November.

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September 2026

October 2026

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