14-day forecast Updated 22:29
Sun · Today · 13 Sep
Showers
23°
16°
1.0 mm
⌄
Wind 11 mph W
Gusts 22 mph
UV index 3 – Moderate
Chance of rain 62%
Sunrise 06:33
Sunset 19:23
Mon · Tomorrow · 14 Sep
Sunny
24°
17°
19%
⌄
Wind 16 mph SW
Gusts 27 mph
UV index 4 – Moderate
Chance of rain 19%
Sunrise 06:35
Sunset 19:21
Tuesday · 15 Sep
Sunny
20°
13°
2.3 mm
⌄
Wind 20 mph W
Gusts 32 mph
UV index 3 – Moderate
Chance of rain 57%
Sunrise 06:36
Sunset 19:18
Wednesday · 16 Sep
Sunny intervals
17°
10°
0.2 mm
⌄
Wind 16 mph NW
Gusts 27 mph
UV index 2 – Low
Chance of rain 24%
Sunrise 06:38
Sunset 19:16
Thursday · 17 Sep
Cloudy
17°
12°
1.3 mm
⌄
Wind 17 mph W
Gusts 32 mph
UV index 5 – Moderate
Chance of rain 58%
Sunrise 06:40
Sunset 19:13
Friday · 18 Sep
Sunny
17°
10°
10%
⌄
Wind 17 mph W
Gusts 27 mph
UV index 5 – Moderate
Chance of rain 10%
Sunrise 06:41
Sunset 19:11
Saturday · 19 Sep
Cloudy
18°
13°
0.7 mm
⌄
Wind 15 mph SW
Gusts 28 mph
UV index 4 – Moderate
Chance of rain 63%
Sunrise 06:43
Sunset 19:09
Sunday · 20 Sep
Cloudy
15°
10°
3.1 mm
⌄
Wind 7 mph W
Gusts 19 mph
UV index 4 – Moderate
Chance of rain 75%
Sunrise 06:45
Sunset 19:06
Monday · 21 Sep
Sunny
21°
9°
15%
⌄
Wind 16 mph SW
Gusts 34 mph
UV index 6 – High
Chance of rain 15%
Sunrise 06:47
Sunset 19:04
Tuesday · 22 Sep
Cloudy
20°
12°
19%
⌄
Wind 17 mph NW
Gusts 34 mph
UV index 4 – Moderate
Chance of rain 19%
Sunrise 06:48
Sunset 19:01
Wednesday · 23 Sep
Cloudy
15°
9°
11%
⌄
Wind 16 mph N
Gusts 27 mph
UV index 4 – Moderate
Chance of rain 11%
Sunrise 06:50
Sunset 18:59
Thursday · 24 Sep
Sunny
17°
8°
7%
⌄
Wind 10 mph N
Gusts 23 mph
UV index 5 – Moderate
Chance of rain 7%
Sunrise 06:52
Sunset 18:57
Friday · 25 Sep
Sunny
20°
10°
4%
⌄
Wind 8 mph E
Gusts 16 mph
UV index 5 – Moderate
Chance of rain 4%
Sunrise 06:53
Sunset 18:54
Saturday · 26 Sep
Sunny
19°
11°
9%
⌄
Wind 10 mph E
Gusts 18 mph
UV index 5 – Moderate
Chance of rain 9%
Sunrise 06:55
Sunset 18:52
Conditions & indices
UV index
3 — Moderate
Max today
Air quality
Low
DAQI 1 / 10
Visibility
6 mi
Good visibility
🗺️ Grantham and what is nearby
Forecast day by day — press play
▶
Markers show the daytime high for the selected day. Tap a marker for Grantham detail; two fingers to move and zoom the map.
Pollen — Grantham
Sunrise 06:33
Sunset 19:23
Day length 12h 50m
Moonrise 09:34
Moonset 19:40
Moon phase 🌔 Waxing Crescent
Latitude 52.9115°N
Longitude -0.6418°E
Skegness (71km) 18°
Holkham (97km) 18°
🌤️ Dry over the next 90 minutes
Now +30 +60 +90 min
Rain minute by minute · UKV nowcast
Today’s index derived from today’s forecast
Drying weather
Poor
Hang the washing out
BBQ weather
OK
Barbecue outdoors
Running weather
Poor
Go for a run
Beer garden
OK
Drinks outside
Other places in the same county / region
Sources · Sunday 13 September
Weather data for Grantham from official sources
The forecast is compiled from global weather models (14-day forecast, UV, air quality, pollen and warnings) together with the UK Met Office UKV model . Data updates every hour, warnings every 15 minutes. Lat 52.9115°N, lon -0.6418°E.