Current weather conditions and 15 day weather forecast for Martinsburg, Illinois, USA including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain risk, wind speed, cloud, pressure, and UV index.
| 11 August 2026 Tuesday 29.2 ° C / 84.6°F ![]() Clear |
Feels Like : 32.6 ° C / 90.7°F Humidity : % 67 Pressure : 1012 mb Wind Speed : 9.7 kmph / 6 miles from SW ![]() Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
| Date | Weather forecast | Low temperature | High temperature | Avg. temperature | Humidity | Chance of rain | UV Index | Sun Position | Moon Position | |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 August 2026 Monday | Sunny |
24.4 ° C (75.9°F) |
34.6 ° C (94.3°F) |
29.2 ° C (84.5°F) |
% 68 | 7% | 5.5 | Sunrise:06:11 AM Sunset: 08:06 PM |
Moonrise:02:56 AM Moonset: 06:46 PM Moon Phase ( New Moon ) |
|
| 11 August 2026 Tuesday | Sunny |
23.7 ° C (74.6°F) |
38.8 ° C (101.8°F) |
30 ° C (85.9°F) |
% 56 | 57% | 8 | Sunrise:06:12 AM Sunset: 08:04 PM |
Moonrise:04:14 AM Moonset: 07:29 PM Moon Phase ( New Moon ) |
|
| 12 August 2026 Wednesday | Sunny |
21.7 ° C (71°F) |
34.4 ° C (93.9°F) |
26.7 ° C (80°F) |
% 68 | 57% | 4.8 | Sunrise:06:13 AM Sunset: 08:03 PM |
Moonrise:05:36 AM Moonset: 08:04 PM Moon Phase ( New Moon ) |
|
| 13 August 2026 Thursday | Sunny |
20.7 ° C (69.2°F) |
34 ° C (93.3°F) |
26.4 ° C (79.6°F) |
% 72 | 57% | 7 | Sunrise:06:14 AM Sunset: 08:02 PM |
Moonrise:06:56 AM Moonset: 08:33 PM Moon Phase ( New Moon ) |
|
| 14 August 2026 Friday | Sunny |
19.2 ° C (66.6°F) |
30.7 ° C (87.3°F) |
24.3 ° C (75.7°F) |
% 81 | 81% | 7.1 | Sunrise:06:15 AM Sunset: 08:01 PM |
Moonrise:08:14 AM Moonset: 09:00 PM Moon Phase ( Waxing Crescent ) |
|
| 15 August 2026 Saturday | Sunny |
21.1 ° C (70°F) |
39.1 ° C (102.4°F) |
28.2 ° C (82.7°F) |
% 64 | 6% | 9 | Sunrise:06:16 AM Sunset: 07:59 PM |
Moonrise:09:28 AM Moonset: 09:25 PM Moon Phase ( Waxing Crescent ) |
|
| 16 August 2026 Sunday | Sunny |
25.4 ° C (77.6°F) |
40 ° C (104.1°F) |
31.3 ° C (88.3°F) |
% 46 | 1% | 10 | Sunrise:06:16 AM Sunset: 07:58 PM |
Moonrise:10:41 AM Moonset: 09:51 PM Moon Phase ( Waxing Crescent ) |
|
| 17 August 2026 Monday | Sunny |
23 ° C (73.4°F) |
32.9 ° C (91.3°F) |
27.4 ° C (81.4°F) |
% 66 | 6% | 8 | Sunrise:06:17 AM Sunset: 07:57 PM |
Moonrise:11:52 AM Moonset: 10:19 PM Moon Phase ( Waxing Crescent ) |
|
| 18 August 2026 Tuesday | Sunny |
17.9 ° C (64.2°F) |
32.3 ° C (90.1°F) |
23.5 ° C (74.3°F) |
% 68 | 36% | 8 | Sunrise:06:18 AM Sunset: 07:55 PM |
Moonrise:01:02 PM Moonset: 10:50 PM Moon Phase ( First Quarter ) |
|
| 19 August 2026 Wednesday | Sunny |
16.8 ° C (62.2°F) |
37.3 ° C (99.1°F) |
26.6 ° C (79.9°F) |
% 57 | 2% | 9 | Sunrise:06:19 AM Sunset: 07:54 PM |
Moonrise:02:10 PM Moonset: 11:27 PM Moon Phase ( First Quarter ) |
|
| 20 August 2026 Thursday | Sunny |
25.7 ° C (78.3°F) |
42.3 ° C (108.2°F) |
33 ° C (91.5°F) |
% 39 | 1% | 10 | Sunrise:06:20 AM Sunset: 07:52 PM |
Moonrise:03:14 PM Moonset: Does not set today Moon Phase ( First Quarter ) |
|
| 21 August 2026 Friday | Sunny |
24.5 ° C (76.1°F) |
42 ° C (107.6°F) |
32.8 ° C (91.1°F) |
% 47 | 57% | 10 | Sunrise:06:21 AM Sunset: 07:51 PM |
Moonrise:04:12 PM Moonset: 12:10 AM Moon Phase ( First Quarter ) |
|
| 22 August 2026 Saturday | Sunny |
26.8 ° C (80.3°F) |
43.5 ° C (110.3°F) |
34.4 ° C (93.9°F) |
% 40 | 1% | 10 | Sunrise:06:22 AM Sunset: 07:50 PM |
Moonrise:05:03 PM Moonset: 01:00 AM Moon Phase ( Waxing Gibbous ) |
|
| 23 August 2026 Sunday | Partly Cloudy |
19.6 ° C (67.3°F) |
32.2 ° C (90°F) |
25.8 ° C (78.4°F) |
% 69 | 9% | 8 | Sunrise:06:23 AM Sunset: 07:48 PM |
Moonrise:05:45 PM Moonset: 01:56 AM Moon Phase ( Waxing Gibbous ) |
|