Grantham (Lincolnshire) weather

Forecast days

Light rain changing to overcast by lunchtime.
Sunrise iconSunrise:
Sunset iconSunset:
M UV
L Pollution
No pollen data.

    7 day forecast for Grantham

    Today (17 September 2025)
    Time
    11:00
    12:00
    13:00
    14:00
    15:00
    16:00
    17:00
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Light rain Overcast Overcast Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    ≥95%
    50%
    40%
    30%
    20%
    20%
    20%
    10%
    10%
    20%
    10%
    10%
    10%
    Temperature
    15°
    16°
    17°
    17°
    18°
    19°
    19°
    18°
    18°
    17°
    17°
    17°
    17°
    Feels like temperature (°C)
    13°
    14°
    14°
    15°
    16°
    16°
    17°
    17°
    16°
    16°
    16°
    16°
    15°
    Wind direction and speed
    SSW
    15
    SSW
    16
    SW
    16
    SW
    16
    SW
    15
    SW
    15
    SW
    14
    SW
    13
    SW
    13
    SW
    12
    SW
    11
    SW
    11
    SW
    10
    Wind gust (mph)
    29
    30
    29
    28
    29
    27
    26
    24
    23
    22
    21
    20
    19
    Visibility
    M
    M
    M
    G
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    93%
    93%
    92%
    92%
    88%
    87%
    86%
    87%
    88%
    90%
    91%
    91%
    91%
    UV 2 2 2 2 2 1 1 1 1 - - - -
    Thursday (18 September 2025)
    Time
    00:00
    01:00
    02:00
    03:00
    04:00
    05:00
    06:00
    07:00
    08:00
    09:00
    10:00
    11:00
    12:00
    13:00
    14:00
    15:00
    16:00
    17:00
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Cloudy Overcast Overcast Overcast Overcast Overcast Overcast Overcast Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    10%
    10%
    10%
    20%
    40%
    40%
    30%
    30%
    30%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    Temperature (°C)
    16°
    16°
    16°
    16°
    16°
    16°
    16°
    16°
    17°
    17°
    18°
    19°
    20°
    21°
    21°
    22°
    22°
    21°
    21°
    20°
    19°
    18°
    18°
    18°
    Feels like temperature (°C)
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    16°
    16°
    16°
    17°
    18°
    18°
    18°
    18°
    18°
    18°
    17°
    17°
    17°
    17°
    16°
    Wind direction and speed (mph)
    SW
    10
    SW
    9
    WSW
    9
    WSW
    9
    WSW
    9
    SW
    9
    SW
    9
    SW
    10
    SW
    11
    SW
    13
    SW
    15
    SW
    16
    SW
    16
    SW
    17
    SW
    18
    SW
    18
    SW
    18
    SW
    16
    SW
    15
    SW
    13
    SW
    12
    SW
    11
    SSW
    11
    SSW
    10
    Wind gust (mph)
    18
    18
    17
    16
    14
    14
    15
    17
    23
    26
    29
    31
    33
    36
    37
    36
    35
    32
    27
    24
    22
    23
    23
    23
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    G
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    VG
    E
    E
    E
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    92%
    92%
    92%
    92%
    92%
    94%
    95%
    95%
    94%
    92%
    89%
    84%
    80%
    75%
    70%
    67%
    66%
    66%
    70%
    74%
    77%
    81%
    84%
    85%
    UV - - - - - - 1 1 1 1 2 3 3 3 3 2 1 1 1 1 - - - -
    Friday (19 September 2025)
    Time
    00:00
    01:00
    02:00
    03:00
    04:00
    05:00
    06:00
    07:00
    08:00
    09:00
    10:00
    11:00
    12:00
    13:00
    14:00
    15:00
    16:00
    17:00
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    <5%
    <5%
    <5%
    <5%
    <5%
    <5%
    10%
    <5%
    Temperature (°C)
    17°
    17°
    17°
    16°
    16°
    16°
    16°
    16°
    16°
    17°
    18°
    19°
    20°
    21°
    22°
    22°
    22°
    22°
    21°
    20°
    19°
    18°
    18°
    17°
    Feels like temperature (°C)
    16°
    16°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    16°
    17°
    18°
    19°
    20°
    21°
    21°
    21°
    21°
    20°
    19°
    18°
    18°
    17°
    Wind direction and speed (mph)
    SSW
    10
    SSW
    10
    SSW
    10
    SSW
    9
    SSW
    9
    SSW
    9
    SSW
    9
    SSW
    8
    SSW
    9
    SSW
    10
    SSW
    11
    SSW
    11
    SSW
    11
    SSW
    11
    SW
    11
    SW
    11
    SW
    10
    SW
    9
    SW
    7
    SW
    6
    SW
    5
    SW
    5
    SW
    5
    WSW
    5
    Wind gust (mph)
    23
    23
    22
    21
    20
    20
    19
    19
    22
    23
    24
    24
    23
    24
    24
    23
    20
    16
    11
    8
    8
    9
    9
    9
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    85%
    85%
    85%
    86%
    86%
    86%
    86%
    86%
    85%
    82%
    76%
    72%
    68%
    66%
    63%
    61%
    61%
    65%
    69%
    76%
    79%
    80%
    82%
    84%
    UV - - - - - - 1 1 1 1 2 3 3 3 3 2 1 1 1 1 - - - -
    Saturday (20 September 2025)
    Time
    00:00
    01:00
    02:00
    03:00
    04:00
    05:00
    06:00
    07:00
    08:00
    09:00
    10:00
    11:00
    12:00
    13:00
    14:00
    15:00
    16:00
    17:00
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Light rain Light rain Light rain Light rain Light rain Cloudy Cloudy Sunny intervals Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    <5%
    10%
    10%
    20%
    20%
    20%
    30%
    40%
    40%
    40%
    50%
    50%
    60%
    60%
    70%
    60%
    50%
    40%
    40%
    30%
    30%
    30%
    30%
    30%
    Temperature (°C)
    17°
    17°
    16°
    16°
    16°
    15°
    15°
    15°
    15°
    15°
    15°
    16°
    16°
    16°
    16°
    16°
    16°
    16°
    16°
    15°
    14°
    14°
    13°
    13°
    Feels like temperature (°C)
    17°
    17°
    16°
    16°
    15°
    15°
    15°
    15°
    14°
    14°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    15°
    14°
    13°
    13°
    12°
    12°
    11°
    Wind direction and speed (mph)
    SW
    5
    SW
    5
    SW
    5
    SW
    5
    WSW
    4
    SW
    4
    SSW
    4
    SSW
    4
    SSW
    4
    ESE
    5
    SW
    6
    WNW
    7
    WSW
    8
    W
    9
    WSW
    9
    SW
    9
    W
    9
    WNW
    9
    W
    9
    W
    8
    WSW
    8
    WSW
    8
    WSW
    8
    WSW
    8
    Wind gust (mph)
    9
    9
    10
    9
    9
    9
    9
    9
    11
    13
    15
    16
    18
    17
    16
    15
    16
    15
    12
    11
    11
    12
    13
    12
    Visibility (description)
    VG
    VG
    VG
    G
    G
    G
    G
    G
    G
    G
    VG
    VG
    VG
    VG
    G
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    86%
    89%
    91%
    91%
    92%
    92%
    93%
    92%
    91%
    89%
    87%
    85%
    84%
    83%
    84%
    79%
    83%
    84%
    85%
    88%
    88%
    90%
    90%
    90%
    UV - - - - - - 1 1 1 1 2 2 1 1 1 1 1 1 1 1 - - - -
    Sunday (21 September 2025)
    Time
    00:00
    01:00
    02:00
    03:00
    04:00
    05:00
    06:00
    07:00
    08:00
    09:00
    10:00
    11:00
    12:00
    13:00
    14:00
    15:00
    16:00
    17:00
    18:00
    19:00
    20:00
    21:00
    22:00
    23:00
    Weather symbols Partly cloudy night Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Overcast Overcast Overcast Overcast Overcast Cloudy Cloudy Cloudy Cloudy Cloudy Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night Partly cloudy night
    Chance of precipitation
    40%
    40%
    40%
    40%
    40%
    40%
    30%
    30%
    30%
    30%
    40%
    50%
    50%
    40%
    40%
    40%
    40%
    30%
    30%
    30%
    20%
    20%
    20%
    10%
    Temperature (°C)
    12°
    12°
    12°
    11°
    11°
    11°
    11°
    11°
    11°
    11°
    12°
    12°
    13°
    13°
    13°
    13°
    13°
    13°
    12°
    11°
    11°
    10°
    10°
    Feels like temperature (°C)
    11°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    10°
    Wind direction and speed (mph)
    SW
    8
    WSW
    9
    WSW
    9
    WSW
    9
    WSW
    9
    WNW
    9
    WNW
    9
    NW
    9
    NNW
    10
    NNW
    11
    N
    12
    N
    12
    N
    13
    N
    14
    N
    13
    N
    13
    NNE
    13
    N
    13
    NNE
    12
    N
    11
    N
    10
    N
    9
    N
    9
    N
    8
    Wind gust (mph)
    13
    13
    12
    11
    12
    12
    10
    11
    17
    19
    19
    26
    27
    26
    24
    26
    28
    26
    22
    17
    15
    16
    15
    15
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    E
    E
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    89%
    91%
    91%
    92%
    92%
    92%
    91%
    91%
    89%
    84%
    81%
    77%
    73%
    68%
    66%
    68%
    66%
    66%
    68%
    74%
    75%
    76%
    77%
    80%
    UV - - - - - - 1 1 1 1 2 3 2 2 2 2 1 1 1 1 - - - -
    Monday (22 September 2025)
    Time
    00:00
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Partly cloudy night Partly cloudy night Partly cloudy night Sunny intervals Cloudy Cloudy Sunny intervals Partly cloudy night Partly cloudy night
    Chance of precipitation
    10%
    10%
    10%
    10%
    10%
    10%
    <5%
    <5%
    10%
    Temperature (°C)
    11°
    14°
    13°
    11°
    Feels like temperature (°C)
    11°
    11°
    Wind direction and speed (mph)
    N
    8
    NNW
    8
    N
    8
    NNW
    8
    N
    11
    NNE
    13
    NNE
    12
    NNE
    9
    N
    7
    Wind gust (mph)
    15
    18
    18
    22
    26
    24
    21
    12
    12
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    81%
    83%
    85%
    84%
    71%
    55%
    54%
    68%
    78%
    UV - - - 1 2 3 1 - -
    Tuesday (23 September 2025)
    Time
    01:00
    04:00
    07:00
    10:00
    13:00
    16:00
    19:00
    22:00
    Weather symbols Partly cloudy night Partly cloudy night Sunny intervals Cloudy Cloudy Sunny intervals Partly cloudy night Partly cloudy night
    Chance of precipitation
    10%
    10%
    10%
    20%
    20%
    10%
    10%
    10%
    Temperature (°C)
    12°
    14°
    14°
    12°
    11°
    Feels like temperature (°C)
    10°
    12°
    12°
    10°
    Wind direction and speed (mph)
    N
    7
    N
    7
    N
    7
    N
    10
    NNE
    12
    NNE
    12
    NNE
    10
    NNE
    8
    Wind gust (mph)
    12
    13
    16
    20
    22
    19
    13
    13
    Visibility (description)
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    VG
    Humidity
    83%
    85%
    86%
    74%
    62%
    62%
    76%
    85%
    UV - - 1 2 3 1 - -

    UK video forecast

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    WARNING
    Flood warnings icon
    Flood warnings in force for England
    Flood warnings in force for England

    East Midlands weather forecast

    Headline:

    Unsettled with rain in the morning and early afternoon.

    Today:

    A band of rain and low cloud moving through the area early morning, turning heavy at times. The rain easing as the morning goes on, to become mainly dry by mid- afternoon with a few brighter spells. Blustery winds expected. Maximum temperature 21 °C.

    Tonight:

    Generally dry with variable cloud through the evening, and some clear skies overnight. The winds easing, with low cloud spreading in overnight. Minimum temperature 15 °C.

    Thursday:

    Outbreaks of rain and low cloud spreading in through the morning, heaviest and most frequent in the west. Strong and gusty winds developing. Maximum temperature 23 °C.

    Outlook for Friday to Sunday:

    Unsettled and cloudy with blustery showers and longer spells of rain possible through the period, becoming heavy at times. Turning colder on Sunday.

    Updated:

    UK long range weather forecast

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