Alton Hourly Forecast
Next 48 Hours
This Afternoon
Sunny. Highs in the upper 50s. West winds 10 to 15 mph with gusts up to 25 mph.
Tonight
Clear. Lows in the lower 30s. West winds around 5 mph.
| Thu, Jan 16th | Temp | Humidity | Wind (mph) | Pressure | Dew Point | Precip. |
|---|---|---|---|---|---|---|
4 PM Sunny UV Index: 0.2 |
59°F Feels 58°F |
46% | 9.6 W | 30.14 inHg | 39.1°F | 0% |
5 PM SunnyUV Index: 0 |
56°F Feels 55°F |
49% | 8.7 W | 30.14 inHg | 39.3°F | 0% |
6 PM Clear  UV Index: 0 |
55°F Feels 54°F |
48% | 6 W | 30.15 inHg | 34.9°F | 0% |
7 PM Clear UV Index: 0 |
53°F Feels 51°F |
49% | 5.4 W | 30.16 inHg | 35.7°F | 0% |
8 PM Clear UV Index: 0 |
50°F Feels 48°F |
51% | 4.9 W | 30.16 inHg | 32.3°F | 0% |
9 PM Clear UV Index: 0 |
49°F Feels 47°F |
54% | 4.7 W | 30.17 inHg | 32.4°F | 0% |
10 PM Clear UV Index: 0 |
47°F Feels 45°F |
57% | 4.7 W | 30.18 inHg | 32.7°F | 0% |
11 PM Clear UV Index: 0 |
45°F Feels 44°F |
61% | 4.3 WNW | 30.19 inHg | 32.7°F | 0% |
Friday
Sunny. Highs in the upper 50s. Southeast winds 5 to 10 mph.
Friday Night
Cloudy. A chance of showers in the evening, then showers after midnight. Not as cool. Near steady temperature in the upper 40s. South winds 5 to 10 mph. Chance of rain 90 percent.
| Fri, Jan 17th | Temp | Humidity | Wind (mph) | Pressure | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM Clear UV Index: 0 |
44°F Feels 42°F |
65% | 3.8 WNW | 30.18 inHg | 32.7°F | 0% |
1 AM Clear UV Index: 0 |
42°F Feels 41°F |
70% | 3.1 WNW | 30.18 inHg | 32.8°F | 0% |
2 AM Clear UV Index: 0 |
41°F Feels 40°F |
74% | 2.7 WNW | 30.18 inHg | 32.9°F | 0% |
3 AM Clear UV Index: 0 |
40°F Feels 39°F |
78% | 1.8 WNW | 30.17 inHg | 33.1°F | 0% |
4 AM Clear UV Index: 0 |
39°F Feels 38°F |
81% | 1.3 WNW | 30.17 inHg | 33°F | 0% |
5 AM Clear UV Index: 0 |
38°F Feels 38°F |
82% | 0.7 WNW | 30.17 inHg | 32.9°F | 0% |
6 AM Clear UV Index: 0 |
38°F Feels 37°F |
84% | 1.3 ENE | 30.19 inHg | 33.1°F | 0% |
7 AM SunnyUV Index: 0 |
37°F Feels 36°F |
86% | 1.3 SSE | 30.19 inHg | 33.2°F | 0% |
8 AM SunnyUV Index: 0.4 |
38°F Feels 37°F |
87% | 2.2 ESE | 30.19 inHg | 33.3°F | 0% |
9 AM SunnyUV Index: 1.2 |
41°F Feels 39°F |
84% | 2.5 SE | 30.19 inHg | 33.8°F | 0% |
10 AM SunnyUV Index: 2.2 |
46°F Feels 44°F |
73% | 4 SSE | 30.2 inHg | 36.1°F | 0% |
11 AM SunnyUV Index: 2.9 |
50°F Feels 48°F |
66% | 4.7 SSE | 30.19 inHg | 39.5°F | 0% |
12 PM SunnyUV Index: 3.1 |
53°F Feels 51°F |
61% | 5.6 SSE | 30.14 inHg | 40.3°F | 0% |
1 PM SunnyUV Index: 2.6 |
55°F Feels 53°F |
57% | 6.5 S | 30.13 inHg | 40.7°F | 0% |
2 PM SunnyUV Index: 1.7 |
56°F Feels 54°F |
54% | 8.7 SSW | 30.07 inHg | 40.1°F | 0% |
3 PM SunnyUV Index: 0.8 |
56°F Feels 55°F |
53% | 8.7 SSW | 30.04 inHg | 39.9°F | 0% |
4 PM SunnyUV Index: 0.2 |
56°F Feels 54°F |
52% | 8.1 SSW | 30.01 inHg | 39.6°F | 0% |
5 PM Cloudy  UV Index: 0 |
55°F Feels 53°F |
55% | 7.2 S | 30 inHg | 39.2°F | 0% |
6 PM Cloudy  UV Index: 0 |
54°F Feels 52°F |
56% | 5.6 S | 29.99 inHg | 39°F | 0% |
7 PM Overcast  UV Index: 0 |
54°F Feels 51°F |
57% | 5.6 SSE | 29.98 inHg | 38.8°F | 0% |
8 PM Overcast UV Index: 0 |
53°F Feels 51°F |
58% | 7.6 SSE | 29.97 inHg | 38.9°F | 0% |
9 PM Overcast UV Index: 0 |
53°F Feels 50°F |
59% | 7.8 S | 29.97 inHg | 39°F | 0% |
10 PM Overcast UV Index: 0 |
52°F Feels 49°F |
60% | 6.5 S | 29.96 inHg | 39.1°F | 0% |
11 PM Patchy Rain Nearby UV Index: 0 |
51°F Feels 48°F |
69% | 7.2 S | 29.95 inHg | 40.5°F | 100% |
Saturday
Mostly cloudy with showers likely in the morning, then partly sunny with a chance of showers in the afternoon. Highs around 60. South winds 5 to 10 mph, becoming west in the afternoon. Chance of rain 60 percent.
Saturday Night
Mostly cloudy. A slight chance of rain showers in the evening. Much cooler with lows in the lower 30s. Chance of rain 20 percent.
| Sat, Jan 18th | Temp | Humidity | Wind (mph) | Pressure | Dew Point | Precip. |
|---|---|---|---|---|---|---|
12 AM Overcast UV Index: 0 |
51°F Feels 47°F |
65% | 9.2 SSE | 29.92 inHg | 39.8°F | 0% |
1 AM Overcast UV Index: 0 |
50°F Feels 46°F |
66% | 6.5 SSE | 29.91 inHg | 40°F | 0% |
2 AM Moderate Or Heavy Rain Shower UV Index: 0 |
49°F Feels 45°F |
82% | 8.9 SSE | 29.85 inHg | 43.4°F | 100% Rain est. 0.29in |
3 AM Moderate Or Heavy Rain ShowerUV Index: 0 |
48°F Feels 45°F |
90% | 6.7 S | 29.83 inHg | 45.2°F | 100% Rain est. 0.44in |
4 AM Heavy Rain UV Index: 0 |
48°F Feels 45°F |
98% | 5.1 SSE | 29.8 inHg | 46.9°F | 100% Rain est. 0.59in |
5 AM Heavy RainUV Index: 0 |
48°F Feels 45°F |
98% | 6.9 SSE | 29.82 inHg | 46.9°F | 100% Rain est. 0.73in |
6 AM Heavy RainUV Index: 0 |
48°F Feels 45°F |
98% | 6.3 SSE | 29.83 inHg | 46.9°F | 100% Rain est. 0.81in |
7 AM Heavy Rain UV Index: 0 |
48°F Feels 46°F |
98% | 5.1 SSE | 29.84 inHg | 46.9°F | 100% Rain est. 0.88in |
8 AM Heavy RainUV Index: 0.4 |
49°F Feels 46°F |
97% | 3.4 SSE | 29.84 inHg | 47.8°F | 100% Rain est. 0.44in |
9 AM Heavy RainUV Index: 1.2 |
49°F Feels 47°F |
97% | 3.1 SSE | 29.84 inHg | 48.2°F | 100% Rain est. 0.22in |
10 AM Mist UV Index: 2.2 |
50°F Feels 49°F |
97% | 2.9 SE | 29.84 inHg | 48.6°F | 0% |
11 AM MistUV Index: 2.4 |
52°F Feels 51°F |
95% | 2.2 S | 29.83 inHg | 50.5°F | 0% |
12 PM MistUV Index: 0.8 |
53°F Feels 52°F |
94% | 1.3 SW | 29.82 inHg | 51.5°F | 0% |
1 PM Overcast  UV Index: 1 |
54°F Feels 53°F |
93% | 1.1 SW | 29.81 inHg | 52.4°F | 0% |
2 PM Overcast UV Index: 1.1 |
54°F Feels 53°F |
94% | 0.9 WSW | 29.81 inHg | 52.6°F | 0% |
3 PM Overcast UV Index: 0.6 |
54°F Feels 53°F |
95% | 2 WSW | 29.81 inHg | 52.8°F | 0% |
Currently
 |
58°F |
30.14 inHg.
Barometer 28%
Humidity W 11.2mph Wind |
| Partly cloudy | ||
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